Synthesis and structural and spectroscopic characterization of the germanazene (GeN(2,6-i-Pr sub 2 C sub 6 H sub 3 )) sub 3 and the tin and lead tetramers (SnN(BMes sub 2 )) sub 4 , (SnN(2,6-i-Pr sub 2 C sub 6 H sub 3 )) sub 4 , and (PbN(2,6-i-Pr sub 2 C sub 6 H sub 3 )) sub 4

The reactions of M(N(SiMe{sub 3}){sub 2}){sub 2} (M = Ge, Sn, Pb) with two bulky primary amines have been investigated. When Ge(N(SiMe{sub 3}){sub 2}){sub 2} was treated with H{sub 2}N(Dipp) (Dipp = 2,6-i-Pr{sub 2}C{sub 6}H{sub 3}), the trimeric species (GeN(Dipp)){sub 3} (1) was formed in high yiel...

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Published inInorganic chemistry Vol. 30:18
Main Authors Hong Chen, Bartlett, R.A., Rasika Dias, H.V., Olmstead, M.M., Power, P.P.
Format Journal Article
LanguageEnglish
Published United States 04.09.1991
Subjects
400201 - Chemical & Physicochemical Properties
BOND ANGLE
BOND LENGTHS
CHEMICAL PREPARATION
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DIMENSIONS
GERMANIUM COMPLEXES
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
LEAD COMPLEXES
LENGTH
NMR SPECTRA
SCATTERING
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TETRAGONAL LATTICES
TIN COMPLEXES
TRICLINIC LATTICES
X-RAY DIFFRACTION
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Summary:The reactions of M(N(SiMe{sub 3}){sub 2}){sub 2} (M = Ge, Sn, Pb) with two bulky primary amines have been investigated. When Ge(N(SiMe{sub 3}){sub 2}){sub 2} was treated with H{sub 2}N(Dipp) (Dipp = 2,6-i-Pr{sub 2}C{sub 6}H{sub 3}), the trimeric species (GeN(Dipp)){sub 3} (1) was formed in high yield. The reaction of Sn(N(SiMe{sub 3}){sub 2}){sub 2} with H{sub 2}N(Dipp) or the primary borylamine H{sub 2}NBMes{sub 2} gives the tetrameric species (SnN(Dipp)){sub 4} (2) and (SnN(BMes{sub 2})){sub 4} (3). The lead compound (PbN(2,6-i-Pr{sub 2}C{sub 6}H{sub 3})){sub 4} (4) was prepared in a similar manner. Details of the {sup 1}H NMR spectroscopy and X-ray crystal structures of all compounds are reported. The trimer (GeN(Dipp)){sub 3} (1), which was described in a preliminary communication, has a planar Ge{sub 3}N{sub 3} ring structure with stereochemically active Ge lone pairs. The structures of 2-4 are tetrameric, featuring Sn{sub 4}N{sub 4} or Pb{sub 4}N{sub 4} cubane skeletons. The data suggest considerable ionic character in the M-N bonds.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic00018a005