Coordination of phosphanide and trialkylsilylphosphanide ligands at pentacarbonyltungsten fragments: An NMR spectroscopic and structural investigation
✍ Scribed by Thomas Rotter; Konstantin Karaghiosoff; Peter Mayer; Matthias Westerhausen
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 126 KB
- Volume
- 16
- Category
- Article
- ISSN
- 1042-7163
- DOI
- 10.1002/hc.20128
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✦ Synopsis
Abstract
Trialkylsilylphosphanide ligands as pentacarbonyltungsten adducts such as the anions [((CO)~5~W)~2~P(H)SiR~3~]^−^ and [(CO)~5~W‐PHSiR~3~]^−^ with R = Me, iPr, and tBu are prepared by the reaction of (thf)W(CO)~5~ with MP(H)SiR~3~ or by the metathesis reaction of ((OC)~5~W)~2~PHLi~2~ with ClSiR~3~ and characterized by NMR spectroscopy with a focus on ^183^W‐NMR experiments. The solvent‐separated ion pair (tmeda)K^+^ [((OC)~5~W)~2~P(H)SiiPr~3~]^−^ crystallizes as a coordination polymer with a rather large PSi bond length of 228.1 pm. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:420–425, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20128