Abstract
Crystals of the title compound are orthorhombic, space group Pnma, with a= 13·182(12), b= 9·115(6), c= 12·132(7)A, Z= 4. The structure was solved by the heavy-atom method and refined by full-matrix least-squares calculations to R 0·039 for 1070 independent reflexions collected on an automatic diffractometer. The molecule has Cs symmetry with distorted octahedral co-ordination around the cobalt atom; mean equatorial distances: Co–N 1·890(3)A; axial lengths: Co–O(H2O) 2·058(3), Co–C(sp3) 1·990(5)A. The intramolecular hydrogen-bonded bridge [O ⋯ O 2·486(4)A] is not symmetrical. Comparison of the Co–C(sp3) axial bond lengths in like complexes is made and shows that there is no clear evidence for a cis-influence with variation in equatorial ligand.
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