Reaction between the methylmethylidyne–tungsten complex [W(CMe)(CO)₂(CO)₂(η-C₅H₅)] and borane: a method of introducing boron into unsaturated organometallic compounds

Hydrotris(methimazolyl)borato Alkylidyne Complexes of Tungsten1

“…We reasoned that if alkylidyne complexes co-ligated by HB(mt) 3 could be prepared, they might be prone to similar hydrogen migrations, but with the hydrogen atom remaining bound to the resulting alkylidene ligand, rather than being lost as hydrocarbon. Alternatively α-addition of the B−H bond to the alkylidyne carbon might occur in a manner recalling Stone's demonstration of alkylidyne hydroboration, either intermolecularly with B 2 H 6 or (9-BBN) 2 or intramolecularly by carbaborane co-ligands . We have shown previously that alkylidyne ligands may serve intramolecularly as hydrogen acceptors in the condensation of triboronate (B 3 H 8 ) ligands to form the dodecaboronate [B 12 H 12 ] 2- dianion …”

Ring Opening of a Cobalt-Stabilized Bornyl Cation: Mechanistic Study of the Alkyne−Dicobalt/Carbynyl−Tricobalt Cluster Transformation

“…This assertion is greatly strengthened by Stone's isolation of [Cp 2 W 2 (CO) 4 (μ-H)(RC⋮CR)] + ( 34 ), in which the hydrogen bridges the tungsten vertexes . Moreover, Stone has also characterized Cp 2 W 2 (CO) 4 [Et(μ-H)B⋮CMe] ( 35 ), whereby the hydrogen bridges the tungsten−boron bond …”

F. Gordon A. Stone: The Chemist’s Chemist

“…If C−C multiple bonds could be hydroborated, could a M−C multiple bond be shown to behave similarly? Greg Elliott, a Ph.D. student from the group of Warren Roper, was able to demonstrate this (Scheme 17) 63 and recalls Gordon entering the lab, wearing a lab coat no one knew he still possessed, to personally supervise the use of borane.…”