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Susanne Klein, Ralf Tonner and Gernot Frenking Carbodicarbenes and Related Divalent Carbon(0) Compounds Chemistry - A European Journal 16

Version of Record online: 19 JUL 2010 | DOI: 10.1002/chem.201000174

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Carbene or carbone? Quantum-chemical studies on dicoordinated carbon compounds with various mono- and bidentate ligands (see picture) show that there is a gliding scale between the bonding situation of carbenes R[BOND]C[BOND]R, in which the carbon atom has one electron pair, and carbones L[RIGHTWARDS ARROW]C[LEFTWARDS ARROW]L, in which the carbon atom has two electron pairs. Divalent carbon(0) compounds (carbones) CL2 are π donors, whereas divalent carbon(II) compounds (carbenes) CR2 are π acceptors.

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