Electronic interactions in 1-ethynyl-2-phenyltetramethyldisilanes HC CSiMe 2 SiMe 2 C 6 H 4 X

JA Shaw-Taberlet, JR Hamon, T Roisnel…

Index: Shaw-Taberlet, Jennifer A.; Hamon, Jean-Rene; Roisnel, Thiery; Lapinte, Claude; Flock, Michaela; Mitterfellner, Thomas; Stueger, Harald Journal of Organometallic Chemistry, 2007 , vol. 692, # 10 p. 2046 - 2055

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Citation Number: 5

Abstract

1-Ethynyl-2-phenyltetramethyldisilanes HCCSiMe2SiMe2C6H4X [X= NMe2 (1), H (2), CH3 (3), Br (4), CF3 (5)] are accessible from ClSiMe2SiMe2Cl, BrMgC6H4X and HCCMgBr in a two step Grignard reaction. The crystal structure of 1 as determined by single crystal X-ray crystallography exhibits a nearly planar PhNMe2 moiety and an unusual gauche array of the phenyl and the acetylene group with respect to rotation around the Si–Si bond. Full ...