Bis-N-heterocyclic carbene in stabilized [bis-NHC(R) → EBr2H2] (E = Si to Pb) (R = H, F, Cl, Br, CH3, CF3) complexes: A theoretical study

A theoretical study on the structure and nature of the C → E bond (E = Si, Ge, Sn, Pb) in hexavalent six-membered chelate rings of some bis-carbene complexes, [bis-NHC(R) → EBr2H2] (E = Si-Pb; R = H, F, Cl, Br, CH3, CF3), has been reported.