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2 Polish Journal of Chemistry

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Complexes of Mn(II), Cu(II) and Cd(II) with Bipyridine Isomers and Lactates

Czakis-Sulikowska D., Malinowska A., Kafarska K.

Polish Journal of Chemistry

2006

Vol. 80, nr 12

1945-1958

The new mixed-ligand complexes containing bipyridine isomers and lactates with formulae Mn(2,4'-bpy)2(lact)2'2H2O, Cu(2,4'-bpy) 2(lact)2, Cd(2,4'-bpy)2(lact)2 . 2H2O, Cd(4-bpy)(lact)2 . 2H2O (where: 2,4_-bpy = 2,4'-bipyridine, 4-bpy = 4,4 '-bipyridine, lact = CH3 CH(OH)COO-) were obtained. These complexes and metal lactates Mn(lact)2 . 2H2O, Cu(lact)2 . 2H2O and Cd(lact)2źH2O were characterized by elemental analysis, IR, conductivity and magnetic measurements. The thermal behaviour of all compounds was studied by thermal analysis (TG, DTG, DTA) in air. A coupled TG/MS system was used to analyse the principal volatile products of thermolysis and fragmentation processes of Cu(II) compounds in air and argon.

Mixed-ligand Ni(II) and Zn(II) Complexes with Bipyridine Isomers and Bromoacetates

Czakis-Sulikowska D., Czylkowska A., Malinowska A.

Polish Journal of Chemistry

2005

Vol. 79 / nr 10

1635-1634

New mixed-ligand complexes of the following stoichiometric formulae: Ni(2-bpy)2- (CBr2HCOO)2.5H2O, Ni(4-bpy)2(CBrH2COO)2.2H2O, Ni(4-bpy)2(CBr2HCOO)2 .2H2O, Ni(2,4'-bpy)2(CBr2HCOO)2 .4H2O, Zn(2-bpy)(CBrH2COO)2 .H2O and Zn(4-bpy)(CBr2HCOO)2.H2O (where: 2,2'-bipyridine = 2-bpy, 4,4'-bipyridine = 4-bpy and 2,4'-bipyridine = 2,4'-bpy) were isolated in pure state. The IR and VIS spectra, molar conductivity, magnetic moments are discussed. Thermal behaviours of complexes were studied by means of DTA, DTG, TG techniques under static air conditions. During heating the complexes decompose via different intermediate products. The final product of nickel(II) complexes pyrolysis was NiO; in the case of zinc(II) complexes total mass loss was observed.