Correlation between quadrupole splitting (Delta) and the theta angle (C-Sn-C) in five-coordinate diphenyltin(IV) complexes. X-ray crystal structures of [Ph2Sn(hacm)] and [Ph2Sn(hacmm)] containing O,N,S-tridentate N-4-heterocyclic thiosemicarbazones

de Sousa, Gerimario F.;Deflon, Victor M.;Manso, Luis Carlos C.;Ellena, Javier E.;Mahieu, Bernard;et.al.
(2007) Transition Metal Chemistry : an international journal — Vol. 32, n° 5, p. 649-655 (2007)

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Authors
  • de Sousa, Gerimario F.
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  • Deflon, Victor M.
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  • Manso, Luis Carlos C.
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  • Ellena, Javier E.
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  • Mahieu, BernardUCLouvain
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Abstract
2-Hydroxyacetophenone N-4- morpholylthiosemicarbazone (H(2)hacm) and 2-hydroxyacetophenone N-4-2,6-dimethylmorpholylthiosemicarbazone (H(2)hacmm) form stable five-coordinate complexes of the compositions [Ph-2(hacm)] and [Ph2Sn(hacmm)], respectively, which were characterized by elemental analysis and spectroscopic (i.r., n.m.r. and Mossbauer) studies. Both complexes and the H(2)hacm ligand were also studied by single crystal X-ray diffraction. The X-ray structures determination of complexes revealed the presence of neutral molecules in which the tin(IV) atoms exhibit distorted trigonal bipyramidal (TBP) geometry, with the O,N,S-tridentate bifunctional behavior of the ligand. The C-Sn-C angles were calculated using a correlation between Mossbauer and X-ray data based on the point-charge model.
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de Sousa, G. F., Deflon, V. M., Manso, L. C. C., Ellena, J. E., Mascarenhas, Y. P., Lang, E. S., Gatto, C. C., & Mahieu, B. (2007). Correlation between quadrupole splitting (Delta) and the theta angle (C-Sn-C) in five-coordinate diphenyltin(IV) complexes. X-ray crystal structures of [Ph2Sn(hacm)] and [Ph2Sn(hacmm)] containing O,N,S-tridentate N-4-heterocyclic thiosemicarbazones. Transition Metal Chemistry : an international journal, 32(5), 649-655. https://doi.org/10.1007/s11243-007-0225-3 (Original work published 2007)