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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 23, Number 6
BKCSDE 23(6)
June 20, 2002

Title	Synthesis and Reactivity of the Pentacoordinate Organosilicon and-germanium Compounds Containing the C,P-Chelating ο-Carboranylphosphino Ligand [ο-C2B10H10PPh2-C,P](CabC,P)
Author	TaegWeon Lee, Sanghoon Kim, Myong Seon Kong, Sang Ook Kang, Jaejung Ko
Keywords	Bis(germyl)palladium, Pentacoordinate organosilicon, o-Carboranylphosphino ligand.
Abstract	The synthesis of the intramolecular donor-stabilized silyl and germyl complexes of the type (Cab^C,P)MMe₂X (2a : M=Si, X = Cl; 2b : M = Ge, X =Cl;2c :M =Si, X=H) was achieved by the reaction of LiCab^C,P(1) with Me₂SiClX and Me₂GeCl₂, respectively . The intramolecular M←P interaction in 2a-2c is provided by ¹H, ¹³C, ³¹P, and ²⁹Si NMR spectroscopy. The salt elimination reaction of dichlorotetramethyldisilane and -digermance with 1 afforded the bis (ο-carboranylphosphino) disilane and digermance [(Cab^C,P)MMe₂]₂ (4a : M =Si ; 4b : M= Ge). The oxidative addition reaction of 4a-4b with Pd₂(dba)₃·CHCl₃ afforded the bis(silyl)-and bis(germyl)-palladium complexes. The chloro-bridged dipalladium complexes were obtained by the reaction of 2a-2b with Pd₂(dba)₃·CHCl₃. The crystal structures of 5a and 7b were determined by X-ray structural studies.
Page	845 - 850
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