|
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.
|
|
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.
|
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
[C7H5NS(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. Proń3, 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 Houssinière, 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, C114H105O6P6Cl6Re3 – Z = 2 – for 3 independent molecules in
triclinic space group P
) 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 Skłodowska 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)