Abstract
In tris(8-oxyquinolinato)phenylsilicon a novel coordination pattern of two 8-oxyquinolinate moieties in hexacoordinate Si complexes was found: cis-(O,O′)-cis-(N,N′). The product of the reaction between 1-chloro-1,2,5-triphenyl-2,5-diazasilolidine and sodium 8-oxyquinolinate [1-(8-oxyquinolinato)-1,2,5-triphenyl-2,5-diazasilolidine] bears a tetracoordinate Si atom. Replacing 8-oxyquinolinate by 8-oxyquinaldinate, however, leads to the formation of tris-(8-oxyquinaldinato)phenylsilicon with hexacoordinate Si atom, but with trans-(O,O′)-cis-(N,N′)-chelation. This is the first structurally and spectroscopically characterized 8-oxyquinaldinato Si complex with hypercoordinate silicon atom.
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Dedicated to Prof. Edmunds Lukevics on the occasion of his 70th birthday
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1826–1837, December, 2006.
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Wagler, J., Gerlach, D. & Roewer, G. 8-oxyquinolinate and 8-oxyquinaldinate in silicon complex chemistry — a new face of old ligands. Chem Heterocycl Compd 42, 1557–1567 (2006). https://doi.org/10.1007/s10593-006-0279-8
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DOI: https://doi.org/10.1007/s10593-006-0279-8