Issue 16, 1999
From the journal:

Journal of the Chemical Society, Dalton Transactions

Molybdenum and tungsten mono-isodiazene complexes with alkyl ligands as ring-opening metathesis polymerisation procatalysts. Crystal and molecular structures of [Mo(CH2CMe2Ph)3(NNPh2)(OC6F5)], [W(CH2SiMe3)3(NNPh2)(OC6F5)] and [WCl2(NNPh2)(OC6F5)2(thf )]

Jonathan R. Dilworth,   Vernon C. Gibson,   Carl Redshaw,   Andrew J. P. White  and  David J. Williams  

Abstract

Reaction of [M(NNPh2)Cl4] with RMgCl followed by addition of pentafluorophenol afforded the tris-alkyl complexes [MoR3(NNPh2)(OC6F5)] [M = Mo, R = CH2CMe2Ph 1; M = W, R = CH2SiMe3 2] in moderate yields. At ca. 80 °C in chlorobenzene 1 and 2 are active for the ring-opening metathesis polymerisation of norbornene; intermediate alkylidene complexes are not observed. The crystal structures of 1 and 2 have been determined; the metal centres adopt trigonal bipyramidal geometries in which the isodiazene and pentafluorophenoxide groups are apical. The crystal structure of [WCl2(NNPh2)(OC6F5)2(thf )] 3 is also reported.

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Article information

DOI
https://doi.org/10.1039/A903770E
Article type
Paper

J. Chem. Soc., Dalton Trans., 1999, 2701-2704

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Molybdenum and tungsten mono-isodiazene complexes with alkyl ligands as ring-opening metathesis polymerisation procatalysts. Crystal and molecular structures of [Mo(CH2CMe2Ph)3(NNPh2)(OC6F5)], [W(CH2SiMe3)3(NNPh2)(OC6F5)] and [WCl2(NNPh2)(OC6F5)2(thf )]

J. R. Dilworth, V. C. Gibson, C. Redshaw, A. J. P. White and D. J. Williams, J. Chem. Soc., Dalton Trans., 1999, 2701 DOI: 10.1039/A903770E

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