Journal
JOURNAL OF ORGANOMETALLIC CHEMISTRY
Volume 648, Issue 1-2, Pages 280-287Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0022-328X(01)01471-1
Keywords
siloxane; pentacoordinated pyridinediols; Si-29-NMR; X-ray diffraction; hypervalency
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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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