Oxidation state control of the reactivity of a transition metal–carbon double bond. Synthesis, X-ray crystal structure, and reactions of the zerovalent difluorocarbene complex [Ru(![[double bond, length half m-dash]](https://www.rsc.org/images/entities/char_e006.gif)
CF2)(CO)2(PPh3)2]
Abstract
Reaction of [Ru(CO)2(PPh3)3] with [Cd(CF3)2(MeOCH2CH2OMe)] produces the zerovalent CF2-complex, [Ru(CF2)(CO)2(PPh3)2]; X-ray crystal structure determination reveals very distorted trigonal bipyramidal geometry and an RuC distance of 1.83(1)Å, and reaction indicate that when compared with an RuII CF2-complex, the CF2-ligand in the zerovalent compound has greatly reduced reactivity towards nucleophiles and in fact reacts with the electrophiles HCL and Ag+ giving [Ru(CF2H)Cl(CO)2(PPh3)2] and [[graphic omitted]{H2O})(CO)2(PPh3)2]+, respectively.
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![[double bond, length half m-dash]](https://www.rsc.org/images/entities/h2_char_e006.gif)
CF2)(CO)2(PPh3)2]