MoIV chloromethylidyne complexes: structure of dicarbonyl(chloromethylidyne)[hydrotris(3,4,5-trimethyl-1-pyrazolyl)borato]molybdenum(IV)

Heterobimetallic μ2-Halocarbyne complexes

The halocarbyne complexes [M(≡CX)(CO)2(Tp*)] (M = Mo, W; X = Cl, Br; Tp* = hydrotris(dimethylpyrazolyl)borate) react with [AuCl(SMe2)], [Pt(-H2C=CH2)(PPh3)2] or [Pt(nbe)3] (nbe = norbornene) to furnish rare examples of μ2-halocarbyne...

Halogenation of A-frame μ-carbido complexes: synthesis of μ2-halocarbynes

The new A-frame μ₂-carbido complexes [Rh₂(μ₂-C)X₂(μ₂-dppm)₂] (X = Cl, Br; dppm = Ph₂PCH₂PPh₂) react with PhICl₂ or [pyH][Br₃] to provide rare examples of μ₂-halocarbyne complexes [Rh₂(μ-CX)(μ-X)X₄(μ-dppm)₂] (X = Cl, Br).

High oxidation state bromocarbyne complexes

Bromination of the carbyne complexes [W(CR)Br(CO)₂(dcpe)] (R = Ph, SiPh₃; dcpe = 1,2-bis(dicyclohexylphosphino)ethane) provides high oxidation state derivatives [W(CPh)Br₃(dcpe)] and [W(CBr)Br₃(dcpe)], the latter via an unprecedented bromodesilylation process.

The Simplest Binary Fluorocarbon as a Ligand. Synthetic, Spectroscopic, Crystallographic, and Computational Studies of a Molybdenum Complex of Terminally Ligated Carbon Monofluoride (Fluoromethylidyne)

Cp*Mo(CO)3CF3 undergoes two-electron reduction using potassium graphite or magnesium graphite to give Cp*Mo(CO)2(CF), the first example of a transition metal complex containing a terminal fluoromethylidyne ligand, which has been characterized spectroscopically, crystallographically, and computationally.