Abstract
The title compound, {[CoBr2(C5H4N2O2)(H2O)]·H2O}n, is a one-dimensional coordination polymer which crystallizes as a monohydrate. The asymmetric unit contains one CoII atom in a distorted octahedral geometry, forming a chain parallel to [010] with the pyrazine carboxylic acid ligands coordinating on one side in a bidentate fashion through one N and one O atom, and in a monodentate fashion through a N atom, with N atoms trans, and with both ligands lying in the same plane. The bromide atoms are cis to each other, while a water molecule occupies the final octahedral coordination site. The chains are linked together though an O—H⋯Br hydrogen bonding network, and are further stabilized by an O—H⋯Br and O—H⋯O hydrogen-bonding framework with the solvent water molecule.
Highlights
The title compound, {[CoBr2(C5H4N2O2)(H2O)]ÁH2O}n, is a one-dimensional coordination polymer which crystallizes as a monohydrate
The asymmetric unit contains one CoII atom in a distorted octahedral geometry, forming a chain parallel to [010] with the pyrazine carboxylic acid ligands coordinating on one side in a bidentate fashion through one N and one O atom, and in a monodentate fashion through a N atom, with N atoms trans, and with both ligands lying in the same plane
Financial support for this work was provided by the Natural Sciences and Engineering Research Council of Canada (NSERC)
Summary
The title compound, {[CoBr2(C5H4N2O2)(H2O)]ÁH2O}n, is a one-dimensional coordination polymer which crystallizes as a monohydrate. The asymmetric unit contains one CoII atom in a distorted octahedral geometry, forming a chain parallel to [010] with the pyrazine carboxylic acid ligands coordinating on one side in a bidentate fashion through one N and one O atom, and in a monodentate fashion through a N atom, with N atoms trans, and with both ligands lying in the same plane. The bromide atoms are cis to each other, while a water molecule occupies the final octahedral coordination site. Crystal data [CoBr2(C5H4N2O2)(H2O)]ÁH2O Mr = 378.88 Monoclinic, P21=c a = 6.9367 (3) Ab = 13.9983 (3) Ac = 11.1446 (5) A = 106.043 (2)
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