Highly Reduced Organometallics. 7. The Synthesis of Alkyl and Phenyl Isocyanide and Related Monosubstituted Vanadium Carbonyl Anions, V(CO)5L, by the Thermal Substitution of (Amine)pentacarbonylvanadate(1−), V(CO)5NH3

John E. Ellis, Kristi Lenz Fjare

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Abstract

(Amine)pentacarbonylvanadate(l−) reacts with various isocyanides, RNC (R = Me, c-Hx, t-Bu, Ph) to form [V(CO)5CNR] in high yields (60–85%). These anions have been characterized by elemental analysis and infrared and 1H NMR spectra and are the first examples of (isocyanide)pentacarbonylvanadate ions. Treatment of Na[V(CO)6NH3] with NaCN in liquid ammonia provides, after cation exchange, up to 56% yields of [Et4N]2[V(CO)sCN]. The reactions of [V(CO)5NH3]- with n-BuNC and acetonitrile also provide V(CO)5L species. On the basis of infrared spectra, these materials are formulated as [V(CO)5CN-n-Bu] and V(CO)5(CH3CN), respectively. The latter product was isolated in 30% yield as a thermally unstable Ph4As+ salt.

Original languageEnglish (US)
Pages (from-to)898-903
Number of pages6
JournalOrganometallics
Volume1
Issue number7
DOIs
StatePublished - Jan 1 1982

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