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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 25, Number 7
BKCSDE 25(7)
July 20, 2004

Title	Novel Group 9 Metal Complexes Containing an S,S\'-Chelating o-Carboranyl Ligand System: Synthesis, Crystal Structures, and Electrochemical Properties of Dinuclear [{(cod)M}₂(S,S\'-S2C₂B₁₀H₁₀)]
Author	Jong-Dae Lee, Bo Young Kim, Chongmok Lee, Young-Joo Lee, Jaejung Ko, Sang Ook Kang*
Keywords	Group 9 metal complexes, S,S'-Chelate ligands, Dinuclear metal complexes, o-Carboranyl ligands
Abstract	The synthesis of novel group 9 metal complexes containing the S,S'-chelate ligands, Li2S2C2B10H10 (2a) and LiS(S=PMe2)C2B10H10 (2b), is described. Two new dinuclear complexes of the type [{(cod)M}2(S,S'-S2C2B10H10)] (cod = 1,5-cyclooctadiene; M = Rh (3a), or Ir (3b)) were synthesized by the reaction of chloridebridged dimers [M( μ-Cl)(cod)]2 with one molar equivalent of the corresponding dilithium dithiolato ligand Li2S2C2B10H10 (2a). X-ray crystal structure analysis of 3a revealed a dinuclear structure in which each (cod)Rh unit is attached to a distinct sulfur atom of a 1,2-dithio-o-carboranyl ligand (2a). Additionally, the electrochemical properties of 3a and 3b were investigated by cyclic voltammetry. In an analogous manner, reaction of the lithium dithiolato ligand LiS(S=PMe2)C2B10H10 (2b) with CpCoI2(CO) produced a mononuclear dithiolato complex, [CpCoI{(S,S'-S(S=PMe2)C2B10H10)}] (4), which was characterized by single-crystal X-ray analysis.
Page	1012 - 1018
Full Text	PDF

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