Synthesis and characterization of hetero-binuclear Co–Rh complexes [Cp∗CoS2C2(B9H10)][Rh(COD)] and [Cp∗CoSe2C2(B10H10)][Rh(COD)]
作者:Jia-Sheng Zhang、Guo-Xin Jin
DOI:10.1016/j.jorganchem.2007.06.002
日期:2007.8
Two hetero-binuclear complexes [Cp*CoS2C2(B9H10)][Rh(COD)] (2a) and [CP*CoSe2C2(B10H10)][Rh(COD)] (2b) [Cp* = eta(5)-pentamethylcyclopentadienyl, COD = cyclo-octa-1,5-diene (C8H12)] were synthesized by the reactions of half-sandwich complexes [Cp*CoE2C2(B10H10)] [E = S (1a), Se (1b)] with low valent transition metal complexes [Rh(COD)(OEt)](2) and [Rh(COD)(OMe)](2). Although the reaction conditions are the same, the structures of two products for dithiolato carborane and diselenolato carborane are different. The cage of the carborane in 2a was opened; However, the carborane cage in 2b was intact. Complexes 2a and 2b have been fully characterized by H-1, B-11 NMR and IR spectroscopy, as well as by elemental analyses. The molecular structures of 2a and 2b have been determined by single-crystal X-ray diffraction analyses and strong metal-metal interactions between cobalt and rhodium atoms (2.6260 angstrom (2a) and 2.7057 angstrom (2b)) are existent. (c) 2007 Elsevier B.V. All rights reserved.