title: Unique properties of C,C'-linked nido-biscarborane tetraanions. Synthesis, structure and bonding of ruthenium monocarbollide via unprecedented cage carbon extrusion.
abstract: Four reaction pathways have been found in the reaction of a C,C'-linked nido-biscarborane tetraanionic salt with [Ru(p-cymene)Cl2]2, leading to the isolation and structural characterization of redox, triple cage B-H oxidative addition, cage expansion and cage carbon extrusion products. Among these, the unprecedented cage carbon extrusion results in the formation of a new 6π-electron carboranyl ligand [C2B10H10](2-). The bonding interactions between this ligand and the Ru(ii) center have also been discussed on the basis of DFT calculations.
authors.affiliation: Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China. zxie@cuhk.edu.hk.
authors.forename: Da
authors.initials: D
authors.lastname: Zhao
authors.forename: Jiji
authors.initials: J
authors.lastname: Zhang
authors.forename: Zhenyang
authors.initials: Z
authors.lastname: Lin
authors.forename: Zuowei
authors.initials: Z
authors.lastname: Xie