期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 648, 期 1-2, 页码 280-287出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0022-328X(01)01471-1
关键词
siloxane; pentacoordinated pyridinediols; Si-29-NMR; X-ray diffraction; hypervalency
Synthesis and characterization of hypervalent pentacoordinated organosilicon complexes obtained from the reaction of disubstituted pyridine ligands with dichlorodiphenylsilane. dichloromethylphenylsilane and bis(dimethylamino)dimethylsilane are reported, The monomeric complexes obtained were characterized by mass spectrometry and multinuclear NMR spectroscopy; additionally their structures were established by X-ray diffraction analysis. The structural parameters indicated Si-N interaction with pentacoordinated geometries displaced towards trigonal bipyramid (TBP): the Si-29-NMR data for these compounds are in agreement with the presence of N-->Si bond. In addition to a variable temperature H-1-NMR study was carried out showing a dynamic behavior for these compounds. (C) 2002 Elsevier Science B.V. All rights reserved.
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