Optically active co-ordination compounds. Part XXIII. Inversion at an octahedral centre
- 1 January 1971
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 2271-2274
- https://doi.org/10.1039/j19710002271
Abstract
One optically pure isomer of the carbonato-bis-L-valinatocobaltate(III) ion, isolated as its potassium salt, has been shown by electronic, circular dichroism, and n.m.r. spectra to be D(+)-cis(N)-cis(O)[Co(L-val)2CO3]–, and this has been confirmed by an X-ray study. The complex reacts rapidly and initially reversibly with acid to give what the circular dichroism spectrum suggests is an inverted product. From the reaction mixture crystals of (–)[Co(L-val)2(H2O)2]+ have been isolated as the perchlorate salt.Keywords
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