Racemization of the aqua-{N-salicylidene-(S)-alaninato}copper(II) by reaction with potassium cyanate
✍ Scribed by J. Krätsmár-Šmogrovič; M. Blahová; V. Kettmann
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 338 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0899-0042
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✦ Synopsis
Copper(I1) N-salicylidene-(3-alaninate trihydrate reacting as the S-enantiomeric parent compound with KOCN in hot diluted methanol yielded by slow crystallisation from the cooled reaction mixture (in the course of 1 day) the racemic product K[Cu{sal-(RS)-ala}(NCO)]. The parameters of the axial type EPR spectrum in X-band region and the LF band position in the electronic spectrum are typical of an axially distorted square pyramidal coordination of the Cu(I1) atom in this complex. The spectral properties of the complex cuprate prepared and its basal crystallographic data are consistent with those of the earlier studied l5 K2[Cu2 {sal-(RS)-ala}2(p-NC0)2] synthetized by using [Cu{sal-(RS)-ala}(H20)].H20 as the racemic parent complex in the reaction mixture with KOCN.