POLISH JOURNAL OF CHEMISTRY
Volume 73 Number 8 August 1999
Pages 1237-1435


CONTENTS

INORGANIC CHEMISTRY

1237

Synthesis and Magnetism of Isophthalato-Bridged Binuclear La(III), Nd(III), Eu(III), Gd(III), Ho(III) and Er(III) Complexes

— Yan C.W. and Li Y.T.

1245

Cation of N-Allylbenzothiazolium as a p-Ligand in Copper(I) Halide Complexes: Synthesis and Crystal Structure of [C7H5NS(C3H5)+×H2O and [C7H5NS(C3H5)]+×CuCl1.06× H2O Compounds

— Goreshnik E.A. and Mys'kiv M.G.

1253

Synthesis and Crystal Structure of Copper(I) Chloride p-Complex with 1-Allylbenzotriazole of CuCl×C6H4N3(C3H5) Composition

— Goreshnik E.A.

1259

The Properties and Crystal Structure of catena-Poly[praseodymium(III)-hexaaqua-m-L-threonine-k3O,O',O'')trichloride and catena-Poly(pentaaqua-m-L-threonine-k3O,O',O'') Europium(III) and Ytterbium(III) Trichlorides

— Rzączyńska Z., Mrozek R., Sikorska-Iwan M., Żak Z. and Głowiak T.

1273

The Influence of Steric Effect and Alkyl Chain Length on Extraction of the Complexes of Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) with 1-Alkyl-2-methylimidazoles

— Lenarcik B., Adach A. and Radzymińska-Lenarcik E.

1283

Copper(I) Halide p-Complexes with Diallylamine of the Extreme Stoichiometry. The Peculiarities of Synthesis and Crystal Structure of 3CuX×(C3H5)2NH (X = Cl, Br)

— Filinchuk Ya.E., Głowiak T. and Mys,kiv M.G.

1293

Crystal Structure, Spectral and Thermal Properties of Tetrakis(acetato) Bis(methyl-3-pyridyl carbamate) Dicopper(II) Di(methanol)

— Melník M., Mojumdar S.C. and Koman M.

ORGANIC CHEMISTRY

1301

Mass Spectrometric Behavior of Acyclic Polydentate Ligands:       4-(Arylimino)pentan-2-ones

— Płaziak A.S., Urbaniak W., Frański R. and Gierczyk B.

1315

Introduction of Selenium to Heterocyclic Compounds. Part VII. Synthesis of 3-Alkyl-5-
benzylidene- and 3-Alkyl-5-cinnamylidene-2-selenorhodanines

— Tejchman W. and Korohoda M.J.

PHYSICAL CHEMISTRY

1323

Effect of the Preceding Chemical Reaction on the Hydrogen Electrode Reaction in Molten Ethylammonium Tetrafluoroborate

— Więcek B. and Kisza A.

1333

Substituent Effect on Transitions in the UV-Absorption Spectra of 2,4- and 2,6-Disubstituted Pyridines

— Ciesielski W., Kozioł J. and Tomasik P.

1339

Luminol-Dependent Photoemission from Macrophages Stimulated by Cyclic Acetals of
Salicylaldehyde

— Maślińska-Solich J., Sowa M. and Czuba Z.

1345

Pathways for Decomposition of Phenylethanol Bound to Silica Surface

— Guko V.M., Leboda R. and Pokrovskiy V.A.

1357

Liquid Crystalline Properties of Azobenzenes: I. 4-Methoxy-, 4-Ethoxy-, 4-Propoxy- and 4-Butoxy-4'-alkyloxyazobenzenes

— Galewski Z., Hofmańska A. and Zielińska K.

1373

Analysis of the High Coverage Complex Desorption Spectra: Application to Hydrogen Desorption from Thin Annealed Gold Film

— Stobiński L. and Zommer L.

1379

Spectroelectrochemical Behaviour of Poly(2,5-dithienylene-isothianaphthene) and Its Analogue Deuterated on the Benzene Ring

— Łapkowski M., Kiebooms R., Gelan J., Vanderzande D., Proń A., Louarn G. and Lefrant S.

 CRYSTAL AND MOLECULAR STRUCTURE

1391

Redetermination of Crystal Structure of Dichloroethanolato Oxobis(triphenylphosphine)rhenium(V) with Larger Unit Cell Using the KM4CCD Diffractometer

— Gałdecki Z., Gałdecka E. and Kowalski A.

COMMUNICATIONS

1405

Spectrophotometric Study of Some Transition Metal Complexes with Tetraethyleneglycol--bis-(8-quinolyl) Ether in Dimethylsulfoxide Solution Using Murexide as a Metallochromic Indicator

— Madrakian T. and Shamsipur M.

1411

Spectroscopic and Magnetic Properties of Bis(arylcarboxylato)di(nicotinamide) Copper(II) Compounds

— Melník M., Kalińska B. and Mroziński J.

1415

Spectral and Thermal Studies of Mn(II) Complexes with Dichlorobenzoic Acids


— Wołodkiewicz W.

1423

Possibility of Some Metals Dissolution in Mixtures of Dimethyl Sulfoxide and Aliphatic Halogen Derivative. Part I. Dissolution of Metallic Copper in Organic Mixtures


— Lenarcik B. and Jurek K.

1429

Spectral and Thermal Studies of Y(III) and Lanthanide(III) Complexes with 5-Amino-2--chlorobenzoic Acid

— Brzyska W. and Borzechowski K.

 

1435

IUPAC Recommendations on Nomenclature and Symbols


ABSTRACTS

1237-1244

Synthesis and Magnetism of Isophthalato-Bridged Binuclear La(III), Nd(III), Eu(III), Gd(III), Ho(III) and Er(III) Complexes

by C.-W. Yan1 and Y.-T. Li2

1Department of Biology, Qufu Normal University, Qufu Shandong, 273165, P.R. China
2Department of Chemistry, Qufu Normal University, Qufu Shandong, 273165, P.R. China

(Received November 27th, 1998; revised manuscript February 22nd, 1999)

Six new binuclear lanthanide(III) complexes, [Ln2(IPHTA)(bpy)4 (ClO4)2](ClO4)2 (Ln = La, Nd, Eu, Gd, Ho, Er; bpy = 2,2'-bipyridine; IPHTA = isophthalate dianion), have been synthesized and characterized by elemental analyses, molar conductance mesurements, IR, ESR and electronic spectra. The variable-temperature magnetic susceptibilities of [Gd2(IPHTA)(bpy)4(ClO4)2](ClO4)2 complex were measured in the temperature range 4~300 K and the observed data were successfully simulated by the equation based on the spin Hamiltonian operator, H = -2J S1S2, giving the exchange parameter J = –0.21 cm–1. This result corresponds with a weak antiferromagnetic spin-exchange interaction between Gd(III)–Gd(III) ions within the complex.




1245-1252

Cation  of  N-Allylbenzothiazolium as a p-Ligand in Copper(I) Halide Complexes: Synthesis and Crystal Structure of [C7H5NS(C3H5)]+·CuCl-·H2O and
[C
7H5NS(C3H5)]+·CuCl1.06Br0.94-·H2O  Compounds

by E.A. Goreshnik and M.G. Mys’kiv

Ivan Franko State University, Department of Chemistry,
Kyryla and Mefodia Str. 6, 290005, L’viv, Ukraine, E-mail: margm@chem.franko.lviv.ua

(Received  November 30th, 1998; revised manuscript March 1st, 1999)

By alternating-current electrochemical synthesis crystals of [C7H5NS(C3H5)]+×CuCl2×H2O (I) and [C7H5NS(C3H5)]+×CuCl1.06Br0.94×H2O (II) p-complexes have been obtained and structurally characterized. Owing to the cationic form, the ligand is coordinated to Cu atom only through the C=C bond. Due to the bridged role of X(2) atom [X = Cl (I) or statistic mixture Cl, Br (II)], cyclic fragments CuX42 appear. Intermolecular hydrogen bonds with participation of the water molecule form three-dimensional structure. The trigonal-pyramidal copper(I) environment involves three halide atoms (one of them occupies the apical position) and C=C group

1253-1258

Synthesis  and  Crystal  Structure  of Copper(I)
Chloride p-Complex with 1-Allylbenzotriazole of CuCl·C6H4N3(C3H5) Composition

by E.A. Goreshnik

Ivan Franko State University, Department of Chemistry, Kyryla and Mefodia Str. 6, 290005, L’viv, Ukraine
E-mail: margm@chem.franko.lviv.ua

(Received December 4th, 1998; revised manuscript March 1st, 1999)

By alternating-current electrochemical synthesis crystals of CuCl×C6H4N3(C3H5) p-complex (I) have been obtained and structurally investigated. Due to the coordination of Cu(I) atoms through the nitrogen atom and olefinic group of the same molecule, organometallic chains appear. Bridged Cl atoms combine these chains into a three-dimensional framework.  The trigonal-pyramidal copper environment involves two Cl atoms (one of them occupies the apical position), nitrogen atom and C=C group.




1259-1272

The Properties and Crystal Structure of catena-Poly[praseodymium(III)-hexaaqua-µ-L-threonine-
-
k3O,O',O'']trichloride and catena-Poly(pentaaqua-
-µ-L-threonine-
k3O,O',O'') Europium(III) and
Ytterbium(III) Trichlorides

by Z. Rzączyńska1, R. Mrozek1, M. Sikorska-Iwan1, Z. Żak2 and T. Głowiak3

1Faculty of Chemistry, Maria Curie-Skłodowska University,
M.C. Skłodowska Sq. 2, 20-031 Lublin, Poland
E-mail:rzacz@hermes.umcs.lublin.pl
2Department of Inorganic Chemistry, Masaryk University, Kotláøská 2, 611 37 Brno, Czech Republic
3Institute of Chemistry, University of Wrocław, F. Joliot Curie 14, 50-383 Wrocław, Poland

(Received October 22nd, 1998; revised manuscript March 8th, 1999)

New complexes of L-threonine and lanthanides(III) of the formulae: [Pr(L-thr)(H2O)6]Cl3 and  [Ln(L-thr)(H2O)5]Cl3, where Ln is Eu(III) and Yb(III), were obtained. They were characterized by elemental, thermal and spectroscopic analyses, as well as the crystal structures were determined by X-ray diffraction method. The compounds are stable up to about 363 K but further heating leads to decomposition to oxychlorides and next to oxides. The complex of Pr(III) crystallizes in the monoclinic P21 space group with cell dimensions a = 9.196(2), b = 19.877(4), c = 9.316(2) A, b =110.12(3)°, Z = 4. The complexes of Eu(III) and Yb(III) crystallize in the orthorhombic P212121 space group with cell dimensions: a = 10.578(2), 10.441(2) A; b = 7.417(2), 7.356(2) A; c = 18.815(4), 18.646(4) A, respectively. The complexes are polymeric chains, in which lanthanide(III) ions are linked by carboxylate bridge and L-threonine molecules additionally coordinate to metal ions by the hydroxyl oxygen and six member rings are formed. The coordination number 9 for Pr(III) ion and 8 for the remaining lanthanides is achieved by coordination of six or five water molecules. The chloride anions are hydrogen bonded with the cationic part of the complex.




1273-1281

The Influence of Steric Effect and Alkyl Chain Length on Extraction of the Complexes of Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) with 1-Alkyl-2-methylimidazoles

by B. Lenarcik1, A. Adach2 and E. Radzymińska-Lenarcik1

1Department of Chemical Technology, University of Technology and Agriculture,
Seminaryjna 3, 85-326 Bydgoszcz, Poland
2Institute of Chemistry, Pedagogical University, 25-020 Kielce, Poland

(Received November 17th, 1998; revised manuscript March 15th, 1999)

Extraction of complexes of 1,2-dimethylimidazole, 1-ethyl-2-methylimidazole, 1-propyl-2-methylimidazole and 1-butyl-2-methylimidazole with Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) from aqueous solutions (I = 0.5 at 298 K) with benzyl alcohol was investigated. For each system, the composition of the extracted species, their partition constants and the pH1/2 were determined. The most readily extractable were the Cu(II) complexes as well as tetrahedral species of  Zn(II), Co(II) and Cd(II). In the case of 1-butyl-2-methylimidazole, the predominating effect on extraction was exerted by hydrophobicity of the alkyl substituent in position „1” rather than the steric effect. With this extractant extraction of Ni(II) was enhanced, while that of Co(II) compounds was suppressed. The extractability of the complexes increased with increasing length of the 1-alkyl chain.




1283-1291

Copper(I) Halide p-Complexes with Diallylamine of the Extreme Stoichiometry. The Peculiarities of Synthesis and Crystal Structure of 3CuX·(C3H5)2NH (X = Cl, Br)

by Ya.E. Filinchuk1, T. Głowiak2 and M.G. Mys’kiv1

1Department of Chemistry, Ivan Franko State University,
Kyryla and Mefodiya Str. 6, 290005, L’viv, Ukraine, E-mail: margm@chem. franko.lviv.ua
2Department of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland

(Received  February 17th, 1999; revised manuscript March 23rd, 1999)

By alternating current electrochemical synthesis, orthorhombic crystals of 3CuCl×(C3H5)2NH (I) and 3CuBr0.84Cl0.16×(C3H5)2NH (II) p-complexes with unusually high ratio CuX:diallylamine were obtained. The isostructural compounds were X-ray structurally characterized on single crystals. Molecule of diallylamine attaches to three copper(I) atoms of the same inorganic fragment. Copper atoms have different coordination spheres: Cu(1) possesses trigonal planar coordination formed by two halide atoms and C=C bond, the similar Cu(2) environment is completed by an additional halide atom to a trigonal pyramid, whereas Cu(3) is surrounded tetrahedrally by three halide atoms and one nitrogen atom. The effective atomic charges in I were calculated.




1293-1299

Crystal  Structure, Spectral and Thermal Properties of Tetrakis(acetato) Bis(methyl-3-pyridyl carbamate) Dicopper(II) Di(methanol)

by  M. Melník1,  S.C. Mojumdar2  and  M. Koman1

1Department of Inorganic Chemistry, Slovak Technical University,
81237 Bratislava, Slovakia, E-mail: melnik@cvt.stuba.sk
2Institute of Inorganic Chemistry, Slovak Academy of Sciences,
Dubravska Cesta 9, SK-842 36 Bratislava, Slovakia, E-mail: uachmoju@savba.sk

(Received November 24th, 1998; revised manuscript April 15th, 1999)

The crystal and molecular structure of the tetrakis(acetato) bis(methyl-3-pyridyl carbamate) dicopper(II) di(methanol), [Cu(CH3COO)2(mpc)]2×2CH3OH (mpc =  methyl-3-pyridylcarbamate), was determined by direct method and Fourier techniques. The compound crystallizes in the triclinic system. The  structure was refined by full-matrix least-squares methods to a weighted R factor of 0.0590, based on independent reflections. The compound is dimeric with square pyramidal geometry at each copper centre. The  two copper(II) atoms are bridged by four carboxylate groups, while the apical ligands are methyl-3-pyridylcarbamates. The Cu–Cu distance is 2.633(12) A. The Cu atoms are displaced by 0.215 A from the plane containing four oxygen atoms towards the apical methyl-3-pyridylcarbamates. Spectral data of the compound are also discussed. The structural data are compared with those found in similar copper(II) acetates.




1301-1313

Mass Spectrometric Behavior of Acyclic Polydentate
Ligands: 4-(Arylimino)pentan-2-ones

by  A.S. Płaziak1,2 , W. Urbaniak1, R. Frański2 and B. Gierczyk1

1Faculty of Chemistry and 2Instrumental Laboratory, Adam Mickiewicz University,
60-780 Poznań, Poland

(Received June 16th, 1998; revised manuscript March 16th, 1999)

Electron ionization (EI) mass spectra of some aromatic derivatives of 4-iminopentan-2-one are discussed. Their mass fragmentation suggests the occurrence in the gas phase of 4-imino-2-keto tautomer only.




1315-1322

Introduction of Selenium to Heterocyclic Compounds. Part VII. Synthesis of 3-Alkyl-5-benzylidene-
and 3-Alkyl-5-cinnamylidene-2-selenorhodanines

by  W. Tejchman and M.J. Korohoda

Department of Chemistry, Pedagogical University, ul. Podchorążych 2, 30-084 Kraków, Poland

(Received January 18th, 1999; revised manuscript March 25th, 1999)

Five new 3-alkyl-5-benzylidene- and five new 3-alkyl-5-cinnamylidene-2-selenorhodanines were obtained by treatment of methylation products of appropriate rhodanines with H2Se. The stability of 2-thiazolinium salts with SCH3 or RNCH3 group formed during methylation (cf. Scheme 2) is determined by substituents at C-5 and N-3 atoms.




1323-1331

Effect of the Preceding Chemical Reaction
on the Hydrogen Electrode Reaction
in Molten Ethylammonium Tetrafluoroborate

by B. Więcek and A. Kisza

Faculty of Chemistry, University of Wrocław, 50383 Wrocław, Poland

(Received December 24th, 1998; revised manuscript March 16th, 1999)

The hydrogen evolution reaction (HER) on platinum electrode in pure molten ethylammonium tetrafluoroborate (EABF4) has been investigated using a.c. impedance and potentiostatic steady-state polarization technique. The recorded impedance spectra have been discussed by an equivalent circuit approach and the theory of impedance of a quasi reversible electrode process preceded by a chemical (dissociation) reaction. The exchange current density of the HER, its activation energy, the diffusion coefficient of the hydrogen cation and the forward and backward rate constants of the preceding dissociation of ethylammonium cation have been determined.




1333-1338

Substituent Effect on Transitions in  the UV-Absorption Spectra of 2,4- and 2,6-Disubstituted  Pyridines

by W. Ciesielski1, J. Kozioł1 and  P. Tomasik2

1Institute of Chemistry, University of Education, 42 201 Częstochowa, Poland

2Department of Chemistry, University of Agriculture, Al. Mickiewicza 21, 31-120 Krakow, Poland

(Received May 18th, 1998; revised manuscript March 17th, 1999)

Analysis of  UV-absorption spectra of several 2,4- and 2,6-disubstituted pyridines confirmed their resemblance to the spectra of meta-disubstituted benzenes. Depending on the resonance character of the substituents in the 2- and 4- positions, a varying importance of the resonance interactions between these substituents and the ring nitrogen atom was observed. Therefore, these substituents fairly irregularly influenced the positions of the 1La-band in the spectra. It was shown that in some cases the substitution of the 2- and 4-monosubstituted pyridines in the 6- and 2-positions, respectively, produced hypsochromic shifts of the 1La-band. Some rules governing the 1La-band shifts, depending on the pattern of substitution and the resonance character of the introduced substituent were attempted.




1339-1343

Luminol-Dependent Photoemission from Macrophages Stimulated by Cyclic Acetals of Salicylaldehyde

by J. Maślińska-Solich1, M. Sowa1 and Z. Czuba2

1Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry,
Silesian Technical University, ul. M. Strzody 9, 44-100 Gliwice, Poland
2Department of Microbiology and Immunology, Silesian School of Medicine,
ul. H. Jordana 19, 41-808 Zabrze, Poland

(Received February 12th, 1999; revised manuscript March 25th, 1999)

The synthesis and structure of several cyclic acetals of 2-hydroxybenzaldehyde (salicylaldehyde) and various 1,2- or 1,3-diols are described. These compounds were tested as the enhancers or inhibitors of luminol-dependent chemiluminescence of macrophages.




1345-1356

Pathways for Decomposition of Phenylethanol
Bound to Silica Surface

by V.M. Gun’ko1, R. Leboda2 and V.A. Pokrovskiy1

1Institute of Surface Chemistry, 31 Prospect Nauki, 252022 Kiev, Ukraine
2Department of Chemical Physics, Faculty of Chemistry, Maria Curie-Sklodowska University,
20031 Lublin, Poland

(Received January 29th, 1999; revised manuscript April 2nd, 1999)

Thermal desorption and decomposition of 2-phenylethanol bound to the silica gel surface were studied after its partial carbonization at 400°C and washing off pitch compounds not bound chemically to the surface. Various possible unimolecular and bimolecular reactions were discussed, based on investigations by temperature-programmed desorption (TPD) mass spectrometry and theoretical methods. The observed broadening of TPD spectra indicated the superposition of several decomposition pathways and the surface non-uniformity, which caused a reduction of the kinetic parameters, calculated over the total temperature interval for 2-phenylethanol, phenylethylene, toluene, and benzene. The rate constants were calculated using experimental data, quantum chemical calculations and RRKM theory.




1357-1371

Liquid Crystalline Properties of Azobenzenes:
I. 4-Methoxy-, 4-Ethoxy-, 4-Propoxy- and 4-Butoxy-4
¢-alkyloxyazobenzenes

by Z. Galewski, A. Hofmańska and K. Zielińska

Faculty of Chemistry, University of Wrocław, 14, Joliot-Curie, 50-383 Wrocław, Poland

(Received January 25th, 1999; revised manuscript April 6th, 1999)

 Liquid crystalline properties of four series of azobenzenes, 4-methoxy-4¢-alkyloxyazobenzenes (azo-1-n), 4-ethoxy-4¢-alkyloxyazobenzenes (azo-2-n), 4-propoxy-4¢-alkyloxyazobenzenes (azo-3-n) and 4-butoxy-4¢-alkyloxyazobenzenes (azo-4-n), were investigated. By polarizing microscopy nematic and smectic C mesophases were detected. By DSC and TOA thermo-optics the parameters of phase transitions were measured. A typical odd-even effect of the clearing temperature was found. No smectic phase was detected in the first three series, even for the longest alkyloxy chains. The smectic C appears for the first time in the butoxy family, starting from the undecyloxyl derivative. In each series a polymorphism in the solid state was detected, especially significant in the propoxy and butoxy family, that was explained in terms of the ODIC phases.




1373-1378

Analysis of the High Coverage Complex Desorption
Spectra: Application to Hydrogen Desorption from
Thin Annealed Gold Film

by L. Stobiński and L. Zommer

Institute of Physical Chemistry, Polish Academy of Sciences,
Kasprzaka 44/52, 01-224 Warszawa, Poland E-mail: zom@ichf.edu.pl

(Received March 5th, 1999; revised manuscript April 15th, 1999)

The analysis of thermal desorption spectra by the Downhill Simplex and the Runge-Kutta methods to solve the Polanyi-Wigner equation has been presented. It is demonstrated for complex thermal desorption spectrum for H adsorbed on a thin gold film at 78 K.




1379-1389

Spectroelectrochemical Behaviour of  Poly(2,5-dithienylene-isothianaphthene) and
Its Analogue Deuterated on the Benzene Ring

by M. Łapkowski1, R. Kiebooms2, J. Gelan2, D. Vanderzande2,
A. Proń
3, G. Louarn4 and S. Lefrant4

1Department of Chemistry, Silesian Technical University, 44 100 Gliwice, ul. M. Strzody 9, Poland; Department of Textile Engineering and Environmental Sciences, Technical University of ŁódŸ, Bielsko-Biała Campus, 43 300 Bielsko-Biała, Plac Fabryczny 1, Poland
2Limburg University, Instituut voor Materiaalonderzoek (IMO), Department BSG,
Universitaire Campus, B-3590 Diepenbeek, Belgium
3CEA Grenoble, DRFMC/SI3M/PMS, 17 Rue des Martyrs, Grenoble, France; Department of Chemistry, Technical University of Warsaw, 00 664 Warszawa, Noakowskiego 3, Poland
4Laboratoire de Physique Cristalline, IMN, Université de Nantes, UMR 110, 2,
rue de la Houssini
ère, 44072 Nantes Cédex 03, France

(Received May 7th, 1998; revised manuscript April 19th, 1999)

Poly(2,5-dithienylene-isothianaphthene) and its analogue, deutered on the benzene ring, have been prepared by voltammetric polymerization of the corresponding monomers in Bu4NBF4/acetonitrile solutions. The polymers obtained are electroactive, showing in cyclic voltammograms two oxidation peaks associated with p-type doping and two reduction peaks, originating from the de-doping process. The use of the polymer deuterated selectively on the benzene ring significantly facilitated the interpretation of Raman spectroelectrochemical data, since it allowed for a differentiation between the bands, originating from the benzene ring and those characteristic of the thiophene backbone. Similarly as cyclic voltammetry, Raman spectroelectrochemistry shows that the oxidative doping of the polymer is a two-step process. The spectral changes observed for the first step of the oxidation are consistent with the formation of the quinonoid sequence of bonds upon doping.




1391-1403

Redetermination of Crystal Structure of  Dichloroethanolato Oxobis(triphenylphosphine)-
rhenium(V) with Larger Unit Cell Using the
KM4CCD Diffractometer

by Z. Gałdecki1, E. Gałdecka2 and A. Kowalski3

1Institute of General and Ecological Chemistry,
Technical University of ŁódŸ, ul. Żwirki 36, 90-924 , ŁódŸ, Poland
2Institute of Low Temperature and Structure Research, Polish Academy of Sciences,
ul. Okólna 2, 50-950 Wrocław, Poland
3Kuma Diffraction Ltd, ul. Akacjowa 15b, 53-122 Wrocław, Poland

(Received November 11th, 1998; revised manuscript March 12th, 1999)

The crystal structure of the title compound with larger unit cell (V = 5147.9 A3, C114H105O6P6Cl6Re3Z = 2 – for 3 independent molecules in triclinic space group P_VP_EQN_7.GIF) has been determined using a KM4CCD Kuma Diffraction Diffractometer with CCD camera, and the original KM4CCD data collection and KM4RED data reduction programs. The structure of the same compound  has already been published [4,5,6]. In these earlier works it was reported, that it contains only one independent molecule in the unit cell with the volume of 1747(2) A3. It seems to be a mistake. Our measurements on KM4CCD diffractometer with two-dimensional CCD camera allowed us to collect sufficient data to eliminate such error possibility. It is worthy to mention that, in the investigated structure, one of three independent molecules in the unit cell (see Fig. 1) distinctly differs in conformation from the remaining two (see Re3 complex in Fig. 1). In the course of above structure measurement on KM4CCD Kuma Diffraction Diffractometer we have also tested the original KM4CCD data collection and KM4RED data reduction computer programs and introduced some new improvements to them.




1405-1410

Spectrophotometric Study of Some Transition Metal Complexes with Tetraethyleneglycol-bis-(8-quinolyl)
Ether in Dimethylsulfoxide Solution Using Murexide
as a Metallochromic Indicator

by T. Madrakian and M. Shamsipur

Department of Chemistry, Razi University, Kermanshah, Iran

(Received December 23rd, 1998; revised manuscript March 11th, 1999)




1411-1414

Spectroscopic  and  Magnetic Properties
of Bis(arylcarboxylato)di(nicotinamide)
Copper(II) Compounds

by M. Melnik1, B. Kalińska2 and J. Mroziński2

1Department of Inorganic Chemistry, Slovak University of Technology, 812 37 Bratislava, Slovakia
2Faculty of Chemistry, University of Wrocław, 50 383 Wrocław, F. Joliot-Curie 14, Poland

(Received February 26th, 1999; revised manuscript April 6th, 1999)




1415-1421

Spectral and Thermal Studies of Mn(II)
Complexes with Dichlorobenzoic Acids

by W. Wołodkiewicz

Department of Inorganic and General Chemistry, Faculty of Chemistry,
Marie Curie Skł
odowska University, 20-031 Lublin, Poland

(Received February 22nd, 1999; revised manuscript April 6th, 1999)




1423-1427

Possibility of Some Metals Dissolution in Mixtures
of Dimethyl Sulfoxide and Aliphatic Halogen Derivative. Part I. Dissolution of Metallic Copper in Organic Mixtures

by B. Lenarcik and K. Jurek

Department of Inorganic Chemistry, University of Technology and Agriculture Bydgoszcz,
Seminaryjna 3, 85-326 Bydgoszcz, Poland

(Received November 12th, 1998; revised manuscript April 19th, 1999)




1429-1433

Spectral and Thermal Studies of Y(III) and Lanthanide(III) Complexes with
5-Amino-2-chlorobenzoic Acid

by W. Brzyska and K. Borzechowski

Department of General Chemistry, Faculty of Chemistry,
Marie Curie Skłodowska University, 20-031 Lublin, Poland

(Received January 25th, 1999; revised manuscript April 19th, 1999)


1435

IUPAC RECOMMENDATIONS ON NOMENCLATURE AND SYMBOLS


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