Crystal structure of a heterometallic coordination polymer: catena-poly[[[tetra-aqua-cobalt(II)]-μ-pyridine-2,6-di-carboxyl-ato-calcium(II)-μ-pyridine-2,6-di-carboxyl-ato] dihydrate].

ABSTRACT: In the crystal of the title polymeric complex, {[CoCa(C₇H₃NO₄)₂(H₂O)₄]·2H₂O} _n (1), the Co^II 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-H⋯O and C-H⋯O hydrogen bonds, and offset π-π stacking inter-actions [inter-centroid distances = 3.551 (1) and 3.746 (1) Å] involving inversion-related pyridine rings link the polymeric chains and lattice water mol-ecules to form a supra-molecular th

SUBMITTER: Lin JS 

PROVIDER: S-EPMC6002818 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature