The five-co-ordinate stereochemistry of dichloro(pyridine-2-aldehyde 2-pyridylhydrazone)cobalt(II)
- 1 January 1966
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 1317-1325
- https://doi.org/10.1039/j19660001317
Abstract
A single-crystal X-ray analysis of Co(paphy)Cl2 is reported. The complex crystallises as green, monoclinic needles: space group P21/c; a= 8·72, b= 11·93, c= 14·32 Å, β= 119·1°, Z= 4. A least-squares refinement of positional and anisotropic vibrational parameters of all 18 atoms has allowed the R factor for 1257 Weissenberg intensities to converge at 8·9%. The complex consists of monomeric molecules with a five-co-ordinate stereo-chemistry for which a square pyramidal description is preferred. Isomorphism with Co(paphy)Br2 and with halogeno-2,2′,2″-terpyridyl complexes of Mn, Co, Ni, Cu, and Zn indicates that these compounds should be similarly described.Keywords
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