Naslov
A rare example of a dinuclear cobalt(II) complex with dipicolinate and bridging 2-aminopyrazine ligands. Preparation, structural, spectroscopic and thermal characterization

Autori
Tabatabaee, Masoumeh ; Kukovec, Boris-Marko ; Razavimahmoudabadi, Vajieh

Izvornik
Zeitschrift fuer Naturforschung. B (0932-0776) 66b (2011), 8; 813-818

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
cobalt ; dipicolinic acid ; 2-aminopyrazine ; dinuclear complex ; X-ray diffraction

Sažetak
A dinuclear cobalt(II) complex, [Co2(H2O)4(dipic)2(µ-apyz)] (dipicH2 = pyridine- 2, 6- dicarboxylic (dipicolinic) acid, apyz = 2- aminopyrazine) (1) has been hydrothermally synthesized and characterized by elemental analyses, spectroscopic methods (IR, UV/Vis), thermal analysis as well as X-ray diffraction studies. The dinuclear complex is composed of two cobalt(II) ions bridged by 2-aminopyrazine molecules. Each cobalt(II) ion is coordinated by one nitrogen and two oxygen atoms of the tridentate dipicolinate anion, one heterocyclic nitrogen atom of the 2-aminopyrazine and two oxygen atoms of coordinated water molecules. The resulting geometry for the CoN2O4 coordination environment can be described as distorted octahedral. Various hydrogen bonds of the O– H∙∙∙O and N–H∙∙∙O type are also present in the crystal structure. This arrangement leads to the formation of a 3D structure.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA