Metal specific variable binding modes in Schiff base complexes — facile synthesis and crystal structure of anionic bis-N-(2-oxyethyl-5-bromosalicylal-diminato) cobalt(III)
✍ Scribed by Rajib Lal De; Keka Samanta; Kamales Maiti; Egbert Keller
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 107 KB
- Volume
- 316
- Category
- Article
- ISSN
- 0020-1693
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✦ Synopsis
The Schiff bases N-(2-hydroxyethyl)-X-salicylaldimine (X =H, Br) which show monobasic bidentate binding mode in their copper(II) complexes, in contrast offer dibasic tridentate chelation and almost spontaneous reaction leading to the synthesis of anionic bis-tridentate cobalt(III) chelates. On the other hand the Schiff bases N-(2-hydroxyphenyl)-X-salicylaldimine (X = H, Br) which are in dibasic tridentate binding mode in their copper(II) complexes are involved in monobasic bidentate chelation yielding neutral bis-bidentate cobalt(II) complexes. Crystal structure analysis of bis-N-(2-oxyethyl-5-bromosalicylal-diminato) cobalt(III) anion confirms near perfect octahedral geometry around cobalt(III).