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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 

Synthesis and Reactivity of the Pentacoordinate Organosilicon and-germanium Compounds Containing the C,P-Chelating ο-Carboranylphosphino Ligand [ο-C2B10H10PPh2-C,P](CabC,P)
TaegWeon Lee, Sanghoon Kim, Myong Seon Kong, Sang Ook Kang, Jaejung Ko
Bis(germyl)palladium, Pentacoordinate organosilicon, o-Carboranylphosphino ligand.
The synthesis of the intramolecular donor-stabilized silyl and germyl complexes of the type (CabC,P)MMe2X (2a : M=Si, X = Cl; 2b : M = Ge, X =Cl;2c :M =Si, X=H) was achieved by the reaction of LiCabC,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 [(CabC,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.
845 - 850
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