synthesis and characterization of heptacoordinated tin(iv) complexes. x-ray crystal structure of [nbu2sn(dappt)]·(me 2co)0.5 [h2dappt = 2,6-diacetylpyridine bis(4-phenylthiosemicarbazone)]

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ID: 167756
2001
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Abstract
The reactions of the 2,6-diacetylpyridine bis(4-phenylthiosemicarbazone) ligand, H2dappt, with R4-mSnXm (m = 2, 3; R = Me, nBu, Ph and X = Cl) led to the formation of four new heptacoordinated organotin(IV) complexes, which were characterized by microanalyses and by IR and Mössbauer spectroscopies. The n-butyl derivative [nBu2Sn(dappt)]·(Me 2CO)0.5 was also analyzed by a single crystal X-ray diffraction study. It crystallized in the monoclinic system with a space group C2/c, with a = 36.164(14), b = 9.7050(15), c = 26.194(11) Å, beta = 132.00(2)º, Z = 8. The structure determination revealed a neutral complex of Sn(IV) in a distorted pentagonal bipyramidal (PBP) geometry, with the equatorial plane defined by the SNNNS donor system of the ligand and with the two n-butyl groups in the axial positions. Also, a correlation between Mössbauer and X-ray data based on the point-charge model is discussed.
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Authors Sousa Gerimário F. de, Deflon Victor M., Niquet Elke, Abras Anuar
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Journal british journal of dermatology
Year 2001
DOI
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URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000400009
Keywords Keywords not found

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