Acta Cryst. (2003). C59, m533-m536 [ doi:10.1107/S0108270103023370 ]
Abstract: The crystal structures of a pair of closely related macrocyclic cyano- and hydroxopentaaminecobalt(III) complexes, as their perchlorate salts, are reported. Although the two complexes, [Co(CN)(C11H27N5)](ClO4)2·H2O and [Co(OH)(C11H27N5)](ClO4)2, exhibit similar conformations, significant differences in the Co-N bond lengths arise from the influence of the sixth ligand (cyano as opposed to hydroxo). The ensuing hydrogen-bonding patterns are also distinctly different. Disorder in the perchlorate anions was clearly resolved and this was rationalized on the basis of distinct hydrogen-bonding motifs involving the anion O atoms and the N-H and O-H donors.
Formula: [Co(CN)(C11H27N5)](ClO4)2·H2O and [Co(OH)(C11H27N5)](ClO4)2
Structure factor file (CIF format) (107.8 kbytes)
Structure factor file (CIF format) (164.8 kbytes)
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