1.
Acta Crystallogr E Crystallogr Commun
; 74(Pt 6): 808-811, 2018 Jun 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-29951235
RESUMO
In the crystal of the title polymeric complex, {[CoCa(C7H3NO4)2(H2O)4]·2H2O} n (1), the CoII ion is N,O,O'-chelated by two pyridine-2,6-di-carboxyl-ate anions in a distorted N2O4 octa-hedral geometry, and two carboxyl-ate O atoms of pyridine-2,6-di-carboxyl-ate anions bridge tetra-aqua-calcium(II) units to form polymeric chains propagating along the b-axis direction. In the crystal, O-Hâ¯O and C-Hâ¯O hydrogen bonds, and offset π-π stacking inter-actions [inter-centroid distances = 3.551â (1) and 3.746â (1)â Å] involving inversion-related pyridine rings link the polymeric chains and lattice water mol-ecules to form a supra-molecular three-dimensional framework.