Synthesis and characterization of cobalt(II) complexes with triethanolamine and succinate and/or nitrate anions

• DOI: 10.1007/s11243-017-0199-8
• Publication Date: 2017-12-22T11:56:50Z
• Authors: I. Ignatyev; Y. Kondratenko; V. Fundamensky; T. Kochina
• Keywords: 01 natural sciences; 0104 chemical sciences

Three Co(II) complexes of triethanolamine (TEA) namely [Co(N(CH2CH2OH)3)2](NO3)2 (1), [Co(N(CH2CH2OH)3)2](OOC(CH2)2COO) (2) and [Co2(N(CH2CH2OH)3)2(NO3)2(OOC(CH2)2COO)] (3) were synthesized and characterized by physicochemical and spectroscopic methods. The first two complexes are cationic and are formed by Co2+ cations coordinated by two TEA ligands plus nitrate or succinate anions, respectively. The equilibrium geometries of the [Co(TEA)2]2+ cations have been optimized at the B3LYP/cc-pVDZ level. Complex 3 is a product of the reaction between cationic complexes 1 and 2.