POLISH JOURNAL OF CHEMISTRY
Volume 72 Number 9 September 1998
Pages 2037-2203


CONTENTS

Page

INORGANIC CHEMISTRY
2037 Synthesis and Characterization of Zn(II), Cd(II) and Hg(II) Complexes of Isonicotinoyl
Hydrazone Derived from Orthohydroxybenzeneazoethylacetoacetate

— Kashar T.I., El-Tabl A.S. and El-Bahnasawy R.M.
2045 Synthesis, Characterization and Magnetism of Tetracarboxylato-Bridged Dinuclear Nickel(II) Complexes
— Yan C.W., Li Y.T., Sun H.T. and Liao D.Z.
2052 Synthesis, Characterization and Magnetic Studies of µ-Oxamido Heterodinuclear
Copper(II)-Iron(II) Complexes

— Li Y.T., Yan C.W. and Kong X.H.
2060 Complexes of Iron(III) Salen and Saloph Schiff Bases Bridged by Dicarboxylic Acids
— Kopel P., Sindelar Z., Biler M. and Klicka R.
2067 The Thermal Decomposition of Certain Metal Chromates(VI)
— Pisarska-Piesse B.B. and Gontarz Z.
2079 Preparation and Photoinduced Processes of Ferric Complexes Containing Fluoride and
Tetradentate Salen-Type Ligands

— Sima J., Mrazova J. and Kotocova A.
2087 Spectroscopic and Thermal Studies of Light Lanthanide Complexes with 2,6-Dihydroxybenzoic Acid
— Brzyska W., Rzączyńska Z., Kula A. and Jaroniec M.
ORGANIC CHEMISTRY
2093 Synthesis of Flagellin Fragments and Studies of Their Interactions with Antibodies. Part I.
— Klugmann K., Kunikowska D., Głośnicka R. and Maćkiewicz Z.
2098 Statherin and Its Shortened Analogues
— Wojciechowska I., Kochańska B., Stelmańska E.,
Knap N., Maćkiewicz Z. and Kupryszewski G.
PHYSICAL CHEMISTRY
2103 On the Quantitative Estimation of Surface Energetic Heterogeneity of Adsorbents and Catalysts Surfaces from TPD Spectra Based on the Statistical Rate Theory of Interfacial Transport: Variable Heating Rate as a Promising Way to Establish the Values of All Unknown Parameters of Interest
— Rudziński W., Borowiecki T., Dominko A., Pańczyk T. and Gryglicki J.
2115 N-Pentane Isomerization in the Presence of BCl3 Containing Superacids
— Marczewski M., Dębowiak M. and Przerwa K.
2127 Electrochemical Reduction of p-Chloronitrobenzene in Dipolar Aprotic Solvents Containing Carboxylic Acids
— Wagner-Czauderna E., Orłowska E. and Kalinowski M.K.
2134 The Electrochemical Scanning Tunneling Microscopy of the Polycrystalline Nickel Oxidation in Sulphuric Acid Solutions
— Błaszczyk T., KaŸmierczak D., Krzyczmonik P. and Scholl H.
2144 Adosrption of Selected Five-Atomic-Skeleton Molecules by NaX Zeolite
— Garbacz J.K., Karpiński K., Ziółkowska D. and Ringel T.
2151 Kinetics of Homogeneous Decomposition of Assymetric Dialkyl Peroxides
— Baj S. and Dawid M.
2159 Oxidative Dehydrogenation of Isobutane on Chromium Oxide-Titania Catalysts
— Grzybowska B., Słoczyński J., Grabowski R., Wcisło K., Kozłowska A., Stoch J. and Serwicka E.
CRYSTAL AND MOLECULAR STRUCTURE
2172 Dimeric Molecules of Co(II) and Zn(II) Complexes with Furan-2-carboxylate Ligands Stabilized by the System of Interconnected C-H...Owater, Owater-H...Ofuran and Owater-H... Hydrogen Bonds
— Paluchowska B., Lis T. and Leciejewicz J.
2181 X-ray Crystallographic and Spectroscopic Investigations of Copper(II) Nitrate-1-Allylimidazole Complexes
— Kurdziel K. and Głowiak T.
COMMUNICATIONS
2189 Synthesis and Magnetism of Manganese(II) Binuclear Complexes with Tetraacetylethylene Dianion as Bridging Ligand
— Li W.H., Xu J.Q., Shi J.M., Wang R.Z., Yang G.Y., Sun H.R.,
Wang T.G., Cheng P. and Liao D.Z.
2193 H[Cu(CDTA)].H2O: A New One-Dimensional Chain Compound with Strong Hydrogen Bonding
— Liu B., Liao D.Z., Yan S.P., Jiang Z.H., Wang G.L., Yao X.K. and Wang H.G.
2198 Magnesium Phthalocyanine - Formed and Complexed with 1,2-Dicyanobenzene
— Kubiak R. and Ejsmont K.
2202 Total Synthesis of Coryximine, a Secophthalideisoquinoline Alkaloid
— Chrzanowska M. and Sulima A.


ABSTRACTS


2037-2044

Synthesis and Characterization of Zn(II), Cd(II) and Hg(II) Complexes of Isonicotinoyl Hydrazone Derived from Orthohydroxybenzeneazoethylacetoacetate

by T.I. Kashar, A.S. El-Tabl and R.M. El-Bahnasawy
Chemistry Department, Faculty of Science, Menoufia University, Shebin El-Kom, Egypt

(Received December 15th, 1997; revised manuscript February 20th, 1998)

Mononuclear and binuclear Zn(II), Cd(II) and Hg(II) complexes of orthohydroxybenzeneazoethylacetoacetate isonicotinoyl hydrazone (H3L), have been synthesized and characterized by elemental analyses, IR, 1H NMR and VIS-UV spectra, conductance and thermal analyses. The ligand behaves as tetradentate in mononuclear complexes and hexadentate in binuclear complexes. The molar conductance of the complexes has been discussed.

2045-2051

Synthesis, Characterization and Magnetism
of Tetracarboxylato-Bridged Dinuclear Nickel(II) Complexes

by C.W. Yan1, Y.T. Li2, H.T. Sun2 and D.Z. Liao3
1Department of Biology, Qufu Normal University, Qufu, Shandong, 273165, P. R. China
2Department of Chemistry, Qufu Normal University, Qufu, Shandong, 273165, P. R. China
3Department of Chemistry, Nankai University, Tianjin, 300071, P. R. China

(Received March 5th, 1998)

Five new tetracarboxylato-bridged dinuclear nickel(II) complexes of the formula [Ni2(PMTA)L4], where L denotes 4,7-diphenyl-1,10-phenanthroline (Ph2-phen); 2,9-dimethyl-1,10-phenanthroline (Me2-phen); diaminoethane (en); 1,3-diaminopropane (pn) and 1,2-diaminopropane (ap); and PMTA represents the tetraanion of pyromellitic acid, have been synthesized and characterized by elemental analyses, molar conductivity and room temperature magnetic moment measurements, and by spectroscopy. It is proposed that these complexes have PMTA-bridged structures and consist of two nickel(II) ions in a distorted octahedral environment. The complexes [Ni2(PMTA)(Ph2-phen)4] (1) and [Ni2(PMTA)(Me2-phen)4] (2) were further characterized by variable temperature magnetic susceptibility measurements (4~300 K) and the observed data were treated in terms of two theoretical models, giving the exchange integrals J = -2.85 cm-1 for (1 and -1.96 cm-1 for (2. The result indicates that there is a very weakly antiferromagnetic spin-exchange interaction between two the Ni(II) ions within each molecule.

2052-2059

Synthesis, Characterization and Magnetic Studies
of µ-Oxamido Heterodinuclear Copper(II)-Iron(II) Complexes

by Y.T. Li1, C.W. Yan2 and X.H. Kong1
1Department of Chemistry, Qufu Normal University, Qufu Shandong, 273165, P. R. China
2Department of Biology, Qufu Normal University, Qufu Shandong, 273165, P. R. China

(Received March 5th, 1998)

Six new µ-oxamido heterodinuclear complexes, [Cu(Me2oxpn)Fe(L)2]SO4, have been synthesized from the planar monomeric fragment [Cu(Me2oxpn)], where Me2oxpn denotes N,N'-bis(3-amino-2,2-dimethylpropyl)oxamido dianion and L represents 1,10-phenanthroline (phen); 5-nitro-1,10-phenanthroline (NO2-phen); 5-chloro-1,10-phenanthroline(Cl-phen);5-bromo-1,10-phenanthroline(Br-phen);5-methyl-1,10-phenan- throline (Me-phen) and 2,2'-bipyridine (bpy). Based on the elemental analyses, spectroscopic studies, magnetic moments (at room temperature) and molar conductivity measurements, extended oxamido-bridged structures consisting of a copper(II) and an iron(II) ions, which have a square planar environment and an octahedral environment, respectively, are proposed for these complexes. The [Cu(Me2oxpn)Fe(bpy)2]SO4 (1) and [Cu(Me2oxpn)Fe(phen)2]SO4 (2) complexes have been characterized by variable temperature magnetic susceptibility (4.2~300 K) and the observed data were least-squares fitted to the susceptibility equation derived from the spin Hamiltonian including single-ion zero-field interaction for the iron(II) ion, H = -2J S1.S2-SZ12, giving the exchange integrals J = -15.8 cm-1 for (1) and J = -17.6 cm-1 for (2). These results indicated that the spin coupling between the adjacent copper(II) and iron(II) ions through oxamido-bridge in both complexes (1) and (2) is antiferromagnetic.

2060-2066

Complexes of Iron(III) Salen and Saloph
Schiff Bases Bridged by Dicarboxylic Acids

by P. Kopel, Z. Sindelar, M. Biler and R. Klicka
Department of Inorganic and Physical Chemistry, Palacky University,
Krizkovskeho 10, 771 47 Olomouc, Czech Republic

(Received November 12th, 1997; revised manuscript April 7th, 1998)

Six dinuclear FeIII complexes involving tetradentate Schiff bases N,N'-bis(salicyl-
idene)ethylenediamine (salenH2) or bis(salicylidene)o-phenylenediamine (salophH2) with 2,6-pyridinedicarboxylic acid (2,6-dicarpyH2), thiodiglycolic acid (tdgaH2) or 3,3'-thiodipropionic acid (3,3'-tdpaH2) have been synthesized and characterized by elemental analysis, IR spectroscopy and conductivity measurements. The magnetic behaviour of all complexes has been studied between 77-298 K. The dicarboxylic acids form bridges between paramagnetic centers and weak antiferromagnetic intramolecular exchanges were found. Thus, the complexes can be characterized as high spin distorted octahedral iron(III), except for [{Fe(saloph)}2(2,6-dicarpy)], where S1 = S2 = 3/2 spin-exchange model complies best with experimental data and the iron(III) has probably square-pyramidal coordination mode. The HDW S1 = S2 = 5/2 spin-exchange model with (H = -2S1 S2) was applied in the case of the other complexes. The antiferromagnetic coupling parameters J vary in the range of -1.06 to -5.87 cm-1.

2067-2078

The Thermal Decomposition of Certain Metal Chromates(VI)

by B.B. Pisarska-Piesse and Z. Gontarz
Department of Inorganic Chemistry, Faculty of Chemistry, Technical University of Warsaw,
00-664 Warsaw, Poland

(Received December 22nd, 1997; revised manuscript April 22nd, 1998)

The thermal decomposition of M2ICrO4 (where MI = Li, Na, K, Rb, Cs, Ag, Tl), MIICrO4 (where MII = Mg, Ca, Sr, Ba), M2III(CrO4)3 (where MIII = La, Nd) has been investigated. Mechanisms of individual stages of the thermal decomposition have been proposed on the basis of morphological classification. The effect of cationic counterions on the decomposition of chromates(VI) is described.

2079-2086

Preparation and Photoinduced Processes of Ferric
Complexes Containing Fluoride and Tetradentate
Salen-Type Ligands

by J. Sima*, J. Mrazova and A. Kotocova
Department of Inorganic Chemistry, Slovak Technical University,
Radlinskeho 9, SK-812 37 Bratislava, Slovakia

(Received January 26th, 1998; revised manuscript April 27th, 1998)

Tetradentate open-chain Schiff base ligands R-salen (R-salen are N,N'-ethylenebis(R-salicylideneiminato) dianions) and fluoride anions F- coordinate to the iron(III) central atom in methanol forming the complexes trans-[Fe(R-salen)(CH3OH)F]. The complexes are redox stable in the dark. Photoexcitation into their intraligand or ligand-to-metal charge transfer excited states leads to the photoreduction of Fe(III) to Fe(II), as a product of metanol oxidation the radical .CH2OH was identified. The final products of the redox processes, Fe(II) and CH2O, are formed in a 2:1 molar ratio. The efficiency of the photoredox processes is strongly wavelength dependent and influenced by the peripheral groups R of the tetradentate ligands. A mechanism of deactivation processes is proposed and the influence of the peripheral groups R on the photoredox efficiency and electrochemical properties of the complexes is discussed.

2087-2092

Spectroscopic and Thermal Studies of Light Lanthanide Complexes with 2,6-Dihydroxybenzoic Acid

by W. Brzyska1, Z. Rzączyńska1, A. Kula1 and M. Jaroniec2
1Department of Inorganic and General Chemistry, Marie Curie Skłodowska University,
20-031 Lublin, Poland
2Department of Chemistry, Kent State University, Kent OH 44242, USA

(Received December 29th, 1997; revised manuscript May 14th, 1998)

The complexes of light lanthanides (La-Eu) with 2,6-dihydroxybenzoic acid have been prepared and their IR spectra and thermal decomposition have been investigated. The complexes Ln(C7H5O4)3.nH2O, where n = 4 for La-Sm and n = 6 for Eu, when heated lose te crystallization water molecules in one (La-Pr), two (Nd, Sm) or three (Eu) steps and then anhydrous compounds decompose to Ln2O3, CeO2 and Pr6O11 with intermediate formation of unstable Ln(C7H5O4)(C7H4O4), except of lanthanum complex, which forms additionally La2O2CO3.

2093-2097

Synthesis of Flagellin Fragments and Studies of Their Interactions with Antibodies. Part I.

by K. Klugmann1, D. Kunikowska2, R. Głośnicka2 and Z. Maćkiewicz1
1Faculty of Chemistry, University of Gdańsk, Sobieskiego 18, 80-952 Gdańsk, Poland
2Faculty of Immunology, Institute of Maritime and Tropical Medicine, 81-519 Gdynia, Poland
E-mail: zbig@chemik. chem.univ.gda.pl

(Received March 25th, 1998; revised manuscript April 23rd, 1998)

Three polypeptide fragments of flagellin protein were synthesized using the solid-phase method. The immunogenicity of the peptides was tested. All the peptides exhibit high immunological activity.

2098-2102

Statherin and Its Shortened Analogues

by I. Wojciechowska1, B. Kochańska2, E. Stelmańska2, N. Knap2,
Z. Maćkiewicz1 and G. Kupryszewski1
1Faculty of Chemistry, University of Gdańsk, Sobieskiego 18, 80-952 Gdańsk, Poland
2Faculty of Medicine, Medical University, 80-208 Gdańsk, Poland

(Received April 8th, 1998; revised manuscript May 22nd, 1998)

Statherin is a 43-amino acid residue phosphominiprotein present in human parotid and submandibular saliva. It may take part in transport of calcium and phosphate and most probably is partly responsible for the protection and recalcification of tooth enamel. The solid phase synthesis of statherin and its three shortened analogues: (1-15)statherin, [Ser2, Ser3](1-15)statherin and [Asp2, Asp3](1-15)statherin is presented. It was established that polyclonal antibodies directed against three shortened analogues showed affinity to synthetic statherin and statherin in saliva.

2103-2114

On the Quantitative Estimation of Surface Energetic Heterogeneity of Adsorbents and Catalysts Surfaces from TPD Spectra Based on the Statistical Rate
Theory of Interfacial Transport: Variable Heating
Rate as a Promising Way to Establish the Values
of All Unknown Parameters of Interest

by W. Rudziński1, T. Borowiecki2, A. Dominko2, T. Pańczyk1 and J. Gryglicki2
1Department of Theoretical Chemistry,
2Department of Chemical Technology, Faculty of Chemistry UMCS, Pl. Marii Curie-Skłodowskiej 3, 20-031 Lublin, Poland

(Received January 12th, 1998; revised manuscript March 25th, 1998)

An essential development is presented, of our new method of quantitative estimation of the energetic heterogeneity of adsorbent and catalysts surfaces, from Temperature Programmed Desorption spectra, based on the Statistical Rate Theory of Interfacial Transport. That method, presented in a series of our recent publications, involved a necessity of estimating, in other than TPD experiments, of certain adsorption parameters which are necessary to calculate the adsorption energy distribution. This was a serious inconvenience of that new method. In this paper, it is shown for the first time, that these parameters can be determined in the same TPD experiment, by applying variable heating rate.

2115-2126

N-Pentane Isomerization in the Presence
of BCl3 Containing Superacids

by M. Marczewski, M. Dębowiak and K. Przerwa
Warsaw University of Technology, Faculty of Chemistry, Koszykowa 75, 00-662 Warsaw, Poland

(Received February 20th, 1998; revised manuscript April 20th, 1998)

New superacid catalysts have been obtained by the action of BCl3 vapours on silicaalumina (87% SiO2). The mechanism and kinetics of pentane isomerization is discussed.

2127-2133

Electrochemical Reduction of p-Chloronitrobenzene in Dipolar Aprotic Solvents Containing Carboxylic Acids

by E. Wagner-Czauderna, E. Orłowska and M.K. Kalinowski
Department of Chemistry, University of Warsaw, 1 Pasteur St., 02093 Warszawa, Poland

(Received March 23rd, 1998; revised manuscript April 30th, 1998)

The effect of carboxylic acids of different strength on polarographic behaviour of p-chloronitrobenzene in N,N-dimethylformamide has been investigated. In the presence of each acid a pre-wave appeared at a more positive potential than the original one, which was associated with the cathodic reduction of a hydrogen-bonded adduct, formed between the nitrocompound and the acid molecules in the double layer of the electrode. A linear correlation has been found between E1/2 and pKHADMF (pKHADMF refers to the value of the pKa measured in N,N-dimethylformamide, whereas E1/2 = E1/2pre wave - E1/2original wave). Measurements in a solvent series in the presence of benzoic acid (BA) led to the correlation between E1/2 and pKBA (the symbol pKBA denotes the value measured in a given solvent). The slopes of regression lines are discussed in terms of the double layer effect on the basicity of the -NO2 group.

2134-2143

The Electrochemical Scanning Tunneling
Microscopy of the Polycrystalline Nickel
Oxidation in Sulphuric Acid Solutions

by T. Błaszczyk, D. KaŸmierczak, P. Krzyczmonik and H. Scholl
Department of General and Inorganic Chemistry,
University of ŁódŸ, ul. Narutowicza 68, 90-136 ŁódŸ, Poland
E-mail: hscholl@chemul.uni.lodz.pl

(Received January 6th, 1998; revised manuscript April 30th, 1998)

A home-made Electrochemical Scanning Tunneling Microscope/Scanning Tunneling Microscope (ESTM/STM) has been used for investigations of the anodic oxidation of polycrystalline nickel, being controlled by cyclic voltammetry and coulometry. A surface fragment with a ± 10% accuracy at the scale of 4800 nm × 4800 nm and 100 nm × 100 nm was observed. The best compact and relatively smooth layers of nickel oxides have been obtained in a concentrated (c = 10.0 mol dm-3) sulphuric acid solution. In a diluted electrolyte (c = 0.1 mol dm-3), the formation of the NiOx islands is possible.

2144-2150

Adsorption of Selected Five-Atomic-Skeleton Molecules by NaX Zeolite

by J.K. Garbacz1,2, K. Karpiński3, D. Ziółkowska1 and T. Ringel1
1Department of Physicochemistry of Surface,
University of Technology and Agriculture, 85-326 Bydgoszcz, Poland
2Department of Physical Chemistry, L. Rydygier Medicine University, 85-094 Bydgoszcz, Poland
3Faculty of Chemistry, N. Copernicus University, 87-100 Toruń, Poland

(Received February 2nd, 1998; revised manuscript May 8th, 1998)

Isotherms and heats of adsorption were measured for n-pentane, cyclopentane, furane and tetrahydrofurane adsorbed separately on NaX zeolite. Molar integral and differential adsorption heats as well as adsorption entropies have been calculated. Two energetical parameters have been determined for each adsorption system.

2151-2158

Kinetics of Homogeneous Decomposition
of Asymmetric Dialkyl Peroxides

by S. Baj and M. Dawid
Institute of Organic Chemistry and Technology, Silesian Technical University,
ul. Krzywoustego 4, 44-100 Gliwice, Poland

(Received February 27th, 1998; revised manuscript May 15th, 1998)

The homogeneous decomposition of various asymmetric dialkyl peroxides ROOR' (R = C6H5C(CH3)2; R' = Et, Pr, Bu, Bui, Bus, But, n-heptyl, n-dodecyl and allyl) is examined by the measurement of autooxidation of isopropylbenzene in the presence of peroxides as initiators. Rate constants and activation parameters are determined and the size effect and type of alkyl group R' on stability of O-O bond is discussed.

2159-2171

Oxidative Dehydrogenation of Isobutane on Chromium Oxide-Titania Catalysts

by B. Grzybowska, J. Słoczyński, R. Grabowski, K. Wcisło,
A. Kozłowska, J. Stoch and E. Serwicka
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences,
ul. Niezapominajek, 30-239 Kraków, Poland

(Received April 20th, 1998; revised manuscript May 18th, 1998)

Oxidative dehydrogenation of isobutane has been studied at 250°C for a series of chromium oxde-TiO2 (anatase) samples containing 5-50 Cr at per nm2 of the support surface and for pure chromia. The catalysts have been characterized by XPS, Raman, ESR spectroscopies and by probe reactions for acido-basic properties and the catalyst oxygen reactivity. The maximum activity and selectivity to isobutene have been observed for a catalyst containing 1 theoretical monolayer of the chromia phase on titania. Higher selectivity to isobutene for this catalyst as compared with unsupported chromia or catalysts with higher Cr loading has been ascribed to lower acidity and lower reactivty of oxygen.

2172-2180

Dimeric Molecules of Co(II) and Zn(II) Complexes
with Furan-2-carboxylate Ligands Stabilized
by the System of Interconnected C-H...Owater,
Owater-H...Ofuran and Owater-H... Hydrogen Bonds

by B. Paluchowska1, T. Lis2 and J. Leciejewicz3
1Institute of Atomic Energy, 05-400 ¦wierk - Otwock
2Department of Chemistry, University of Wrocław, Wrocław
3Institute of Nuclear Chemistry and Technology, ul. Dorodna 16, 03-195 Warszawa, Poland

(Received April 6th, 1998; revised manuscript April 30th, 1998)

The crystals of cobalt furoate {bis(µ-furan-2-carboxylato-O,O')-(µ-furan-2-carboxylato-O,O,O')-(furan-2-carboxylato-O)-bis[diaquacobalt(II)] dihydrate} are isostructural with the crystals of zinc furoate. They contain dimeric molecules. Two independent metal ions are connected to each other by three carboxylate bridges (one O:O,O and two O:O) from furan-2-carboxylate anions. The distorted octahedral environments of metal ions differ in the way of binding one of the furan-2-carboxylate ligands: monodentate in the case of Co(1) [Zn(1)]; bidentate in the case of Co(2) [Zn(2)]. The heteroring oxygen atoms do not coordinate directly the metal ions; their electrondonor properties manifest themselves by formation of Owater-H...Ofuran contacts. Both structures exhibit intermolecular hydrogen bonds involving all Owater atoms, and also weak contacts to carbon atoms from furan rings as donors. Carbonyl and furan oxygen atoms and electron of the furan rings are proton acceptors in these hydrogen bonds.

2181-2188

X-ray Crystallographic and Spectroscopic Investigations of Copper(II) Nitrate-1-Allylimidazole Complexes

by K. Kurdziel1 and T. Głowiak2
1Institute of Chemistry, Pedagogical University, 25-020 Kielce, Chęcińska 5, Poland
2Faculty of Chemistry, University of Wrocław, 50-383 Wrocław, Poland

(Received February 19th, 1998; revised manuscript May 8th, 1998)

Copper(II) complexes Cu2L4(NO3)4 (a) and CuL4(NO3)2 (b), where L is 1-allylimidazole, have been synthesized and characterized by elemental analysis, IR, FTIR, near IR, VIS, magnetic and crystallographic measurements. In centrosymmetric binuclear complex (a) the nitrate anions are linked to the Cu(II) cations through bidentate oxygen atoms. In complex (b) the Cu(II) cation occupies a symmetry centre and is tetragonal-bipyramid coordinated.

2189-2192

Synthesis and Magnetism of Manganese(II) Binuclear Complexes with Tetraacetylethylene Dianion
as Bridging Ligand

by W.H. Li1, J.Q. Xu2, J.M. Shi1, R.Z. Wang2, G.Y. Yang2,
H.R. Sun2, T.G. Wang2, P. Cheng3 and D.Z. Liao3
1Department of Chemistry, Shandong Normal University, Jinan 250014, P. R. China
1State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
2Department of Chemistry, Jilin University, Changchun 130023, P. R. China
3Department of Chemistry, Nankai University, Tianjin 300071, P. R. China

(Received April 20th, 1998)

2193-2197

H[Cu(CDTA)].H2O: A New One-Dimensional Chain Compound with Strong Hydrogen Bonding

by B. Liu1, D.Z. Liao1, S.P. Yan1, Z.H. Jiang1,
G.L. Wang1, X.K. Yao2 and H.G. Wang2
1Department of Chemistry, Nankai University, Tianjin 300071, P. R. China
2Central Laboratory, Nankai University, P. R. China

(Received February 13th, 1998; revised manuscript April 21st, 1998)

2198-2201

Magnesium Phthalocyanine - Formed and
Complexed with 1,2-Dicyanobenzene

by R. Kubiak1 and K. Ejsmont1,2
1W. Trzebiatowski Institute of Low Temperature and Structure Research,
Polish Academy of Sciences, P.O.Box 1410, 50 950 Wrocław 2, Poland,
E-mail: kubiak@int.pan.wroc.pl
2Institute of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland

(Received March 26th, 1998; revised manuscript May 11th, 1998)

2202-2203

Total Synthesis of Coryximine,
a Secophthalideisoquinoline Alkaloid

by M. Chrzanowska and A. Sulima
Faculty of Chemistry, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland

(Received May 4th, 1998; revised manuscript May 18th, 1998)


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