Exchange coupling in Di-μ-hydroxo-bis{bis[(S)alaninato]chromium(III)} trihydrate
✍ Scribed by D. Eric Bolster; William E. Hatfield; Leo W. Haar
- Publisher
- Springer
- Year
- 1985
- Tongue
- English
- Weight
- 452 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0340-4285
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The title compound, Ba[Cr 2 (C 6 H 6 NO 6 ) 2 (OH) 2 ]Á6H 2 O, is contains two discrete Cr(nta)OH units (nta 3À is nitrilotriacetate) in the asymmetric unit, each generating a centrosymmetric dimer with two hydroxo bridges. The ten-coordinate Ba 2+ cation provides a link between dimeric units. Each
HigIl-resolution absorption, iuminesccnce, Zeeman and MCD experiments were performed cm sir& crystals of the title compound. The singlet-tripiet and trip&t-quintet exchange splittings in the ground state are 138 and 267 cm-'. respectively. The corresponding exchange parameters are 2J= -128 cm-' andj