Solution and solid-state structural chemistry of tungsten pyrazolylborate π-allyl complexes: 2D 183W and 1H NOESY NMR studies
✍ Scribed by Paul S. Pregosin; Alceo Macchioni; Joseph L. Templeton; Peter S. White; Shaoguang Feng
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 597 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
2D^1^H NOESY and inverse detected ^183^W NMR measurements for the pseudo‐octahedral η^3^‐allyl complexes W(CO)~2~(Tp′)(η^3^‐CH~2~CHCDPh) (1) and W(CO)~2~(Tp′)(η^3^‐CH~2~CHCHCH~3~) (2), where Tp′ = hydridotris(3,5‐dimethylpyrazolyl)borate are reported. The observed solution structure for 1 differs from that found in the solid‐state via x‐ray diffraction (isomers can arise due to allyl rotation and/or coordination of either allyl face). Crystal data for 1: WC~26~H~31~BN~6~O~3~, space group P2~1/c~, a = 9.775(1) Å, b = 17.360(2) Å, c = 16.144(5) Å, β = 102.26(2)°, V = 2677(1) Å^3^, Z = 4.