The dinuclear title compound, [Co(2)Cl(3)(C(6)H(4)NO(2))(C(6)H(6)N(2)O)(2)(C(2)H(5)OH)], contains two six-coordinate Co(II) atoms with different octa-hedral coordination environments. One Co(II) atom is coordinated by two N atoms from one pyridine-2-carbaldehyde oxime ligand, by one terminal and one bridging Cl(-) ion, by one O atom from an ethanol mol-ecule, and by one O atom from a bridging p...

The central structural motif of the title coordination polymer, [Co(NO3)2(C4H4N2)(CH3CN)2(H2O)2] n , is a chain composed of Co(II) ions linked by bis-monodentate bridging pyrazine ligands through their N atoms. The Co(II) ion is located on an inversion center and is additionally coordinated by two O atoms of water mol-ecules and two N atoms of aceto-nitrile mol-ecules. The resultant N4O2 coordi...

In the title compound, Na(2)[Co(CH(4)O(6)P(2))(2)(H(2)O)(2)]·2H(2)O, the asymmetric unit is composed of one methyl-enediphospho-nate ligand and one water mol-ecule, which both are coordinated to a Co(II) atom, as well as a non-coordinated water mol-ecule and a sodium cation. The Co(II) atom occupies a special position on a crystallographic inversion centre. The slightly distorted Co(II)O(6) oct...

A series of metal complexes of Cu(II), Ni(II) and Co(II) having the general composition [M(L)2]Cl2 [where L= m-nitrobenzaldehyde-4-(4'-sulphoamidephenyl)-3-thiosemicarbazone; M = Cu(II), Ni(II) and Co(II)] have been prepared and characterized by elemental analysis, spectral (IR and H NMR) studies, molar conductance, magnetic susceptibility measurements and thermogravimetric analysis. The spectr...

In the title polymeric complex, [Co(NCS)(2){SC(NH(2))(2)}(2)](n), the asymmetric unit comprises a Co(II) ion, which is situated on an inversion centre, an N-bound thio-cyanate anion and a μ(2)-bridging thio-urea mol-ecule. The Co(II) atom is coordinated in a distorted octa-hedral fashion within an N(2)S(4) donor set. The bridging thio-urea ligands link Co(II) ions into a polymeric chain extendi...

Raman spectra of ATP at various pH values are affected by addition of equimolar solution of divalent metal ions such as Ca2+, Mg2+, Co2+, Cu2+, and Hg2+. The changes in frequency and intensity have been used to construct models describing the nature of metal-adenine and metal-triphosphate interactions under different conditions. The metal ions are found to co-ordinate the triphosphate group in ...

Environmental remediation of hazardous metals like Cd(II), and Co(II) ions is very necessary due to their toxicity at trace accumulation levels in the biosystem. In this study, sorption Co(II), Cd(II) from aqueous solutions onto titano-silicate (TiSi) ion exchange material in-situ dopping composites cobalt (Co-TiSi) cadmium (Cd-TiSi) was achieved. TiSi were obtained by precipitation technique c...

The title compound, [Zn(CH(3)CO(2))Cl(C(14)H(14)N(4))](n), is a one-dimensional coordination polymer in which the Zn(II) ion is tetrahedrally -coordinated by two N atoms of a bridging 1,1'-[1,4-phenyl-enebis(methyl-ene)]di-1H-imidazole ligand, an acetate O atom and a Cl atom. The Cl atom, two acetate O atoms and two acetate C atoms are located on a mirror plane. The coordination of the diimidaz...

The interaction between some heavy metal ions such as of Pb(II), Cd(II) and Cu(II) ions from aqueous solution adsorbed by single walled carbon nanotube (SWCNTs) and carboxylate group functionalized single walled carbon nanotube (SWCNT-COOH) surfaces were studied by atomic absorption spectroscopy. The effect of contact time, pH, initial concentration of ion, ionic strength and temperature on the...

Hydrazine derived compounds and its Co(II), Cu(II) and Ni(II) chelates having the same metal ion but different anions (e.g., nitrate, sulphate, oxalate and acetate) have been synthesised and characterised by their physical, spectral and analytical data. In order to evaluate the participating role of anions in the antibacterial activity, these synthesised ligands and its metal chelates have been...