Abstract
In the title cobalt(II) coordination polymer with isobutyrate ligands, {[Co{CH(CH3)2CO2}2(H2O)]·H2O} n , the Co2+ ion is hexa-coordinated in a slightly distorted octa-hedral coordination environment defined by two O atoms from two bridging water mol-ecules and four O atoms from four bridging carboxyl-ate ligands. The carboxyl-ates adopt two different coordination modes, μ-(κ2O:O') and μ-(κ2O:O), forming a one-dimensional polymeric chain extending along [010]. The intra-chain cobalt⋯cobalt separation is 3.2029 (2) Å. The polymeric chains are linked by hydrogen bonds involving the water mol-ecules of solvation, giving a two-dimensional network structure lying parallel to (100).
Highlights
{[Co{CH(CH3)2CO2}2(H2O)]H2O}n, the Co2+ ion is hexacoordinated in a slightly distorted octahedral coordination environment defined by two O atoms from two bridging water molecules and four O atoms from four bridging carboxylate ligands
We have reported on the crystal structures of the hydrated polymeric cobalt(II)
Cobalt(II) carboxylates are of interest for our group as starting materials for the synthesis of mixed-valence cobalt carboxylates
Summary
Carboxylate anions still remain a popular choice as bridging ligands because of their ability to form diverse oligo- and polynuclear structures. We have reported on the crystal structures of the hydrated polymeric cobalt(II). Carbonate hydrate with the corresponding aqueous carboxylic acid. The aim of these studies was to investigate the influence of the steric features of the carboxylate anion on the structure of the resulting compounds. Cobalt(II) carboxylates are of interest for our group as starting materials for the synthesis of mixed-valence cobalt carboxylates As a part of our ongoing studies on these compounds, we describe here synthesis and crystal structure of the title compound, {[Co{CH(CH3)2CO2}2(H2O)]H2O}n, (I).
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