The first stable transition metal (molybdenum or tungsten) complexes having a metal–phosphorus(III) double bond: the phosphorus analogues of metal aryl- and alkyl-imides; X-ray structure of [Mo(η-C5H5)2(PAr)](Ar = C6H2But3-2,4,6)
- 1 January 1987
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 17,p. 1282-1283
- https://doi.org/10.1039/c39870001282
Abstract
Arylphosphinylidenemetal complexes [M(η-C5H5)2(PAr)][M = Mo (1) or W (2), Ar = C6H2But 3-2,4,6] and an alkyl analogue [W(η-C5H5)2(PR)][R = CH(SiMe3)2(3)] have been prepared from [{M(η-C5H5)2HLi}4] and PCl2R′(R′= Ar or R), and show low-field 31P chemical shifts: δ(31P{1H})(C6D6)(1)+ 799.5 [J(31P–1H) 4 Hz (involving only one of the two C5H5 rings)]; (2)+666.1 [J(31P–183W) 153.5 Hz, J(31P–1H) 4 Hz]; and (3)+679.6 [J(31P–183W) 144.1 Hz]. Compound (1) has an Mo–P bond length of 2.370(2)Å and a Mo–P–C bond angle of 115.8(2)°.Keywords
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