0000000000749404
AUTHOR
Dušan Mikloš
showing 3 related works from this author
Synthesis, spectral and magnetic properties of two different 2-nitrobenzoatocopper(II) complexes containing N,N-diethylnicotinamide
2008
Abstract Two structurally different complexes, [Cu2(2-NO2Bz)4(denia)1]n (1) and [Cu(2-NO2Bz)2(denia)2(H2O)2] (2), were prepared from the same reaction (where 2-NO2Bz = 2-nitrobenzoate, denia = N,N-diethylnicotinamide) and they are reported together with [Cu2(2-NO2Bz)4(DMF)2] (3) (DMF = N,N-dimethylformamide). The compounds under study were characterized by elemental analysis, electronic, IR and EPR spectra, magnetic measurements over the temperature range of 1.8–300 K and X-ray analysis. The molecular structure of (1) is polymeric, (2) is monomeric and (3) is dimeric. In the polymeric chain of (1), the denia molecules serve as bridges between dimeric Cu2(2-NO2bz)4 units. Each Cu(II) atom ha…
Crystal structures, spectral and magnetic properties of cobalt(II) pyridinecarboxylates: A novel polymeric chain in {[{2,6-(MeO)2nic}2(H2O)2Co(μ-H2O)…
2006
Abstract Synthesis and characterization of two new cobalt(II) complexes, namely monomeric [Co(2-MeSnic)2(H2O)4] · 4H2O (2-MeSnic is 2-methylthionicotinate) and polymeric {[{2,6-(MeO)2nic}2(H2O)2Co(μ-H2O)Co(H2O)4(μ-H2O)]{2,6-(MeO)2nic}2 · 6H2O}n (2,6-(MeO)2nic is 2,6-dimethoxynicotinate), are reported. The characterizations were based on elemental analysis, infrared and electronic spectra as well as magnetic measurements. Crystal structures of both complexes have been determined. In both of them – ([Co(2-MeSnic)2(H2O)4] · 4H2O and {[{2,6-(MeO)2nic}2(H2O)2Co(μ-H2O)Co(H2O)4(μ-H2O)]{2,6-(MeO)2nic}2 · 6H2O}n) – the CoII atom is six-coordinated. In the 2nd complex, there are two nonequivalent CoI…
catena-Poly[[bis(3-pyridylmethanol-κN)copper(II)]-μ-oxalato-1κ2 O 1,O 2:2κ2 O 1′,O 2′]
2007
In the title compound, [Cu(C2O4)(C6H7NO)2] n , the CuII atom is six-coordinated in a slightly deformed elongated octahedral arrangement and the 3-(hydroxymethyl)pyridine ligand, surprisingly, acts as a monodentate ligand coordinated only through the N atom of the pyridine ring. The oxalate ligands, on inversion centres, bridge the metal ions, forming infinite chains. The chains are linked by intermolecular O—H...O hydrogen bonds into a three-dimensional network.