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Correlation between quadrupole splitting (Δ) and the θ 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

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Abstract

2-Hydroxyacetophenone N 4-morpholylthiosemicarbazone (H2hacm) and 2-hydroxyacetophenone N 4-2,6-dimethylmorpholylthiosemicarbazone (H2hacmm) form stable five-coordinate complexes of the compositions [Ph2(hacm)] and [Ph2Sn(hacmm)], respectively, which were characterized by elemental analysis and spectroscopic (i.r., n.m.r. and Mössbauer) studies. Both complexes and the H2hacm 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 Mössbauer and X-ray data based on the point-charge model.

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Authors and Affiliations

  1. Instituto de Química, Universidade de Brasília, Brasilia, DF, 70919-970, Brazil

    Gerimário F. de Sousa, Victor M. Deflon & Luís Carlos C. Manso

  2. Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, 13560-970, Brazil

    Javier E. Ellena & Yvonne P. Mascarenhas

  3. Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, 97919-900, Brazil

    Ernesto S. Lang & Claudia C. Gatto

  4. Departement de Chimie, University of Louvain, B-1348, Louvain-la-Neuve, Belgium

    Bernard Mahieu

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  1. Gerimário F. de Sousa
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Correspondence to Gerimário F. de Sousa.

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de Sousa, G.F., Deflon, V.M., Manso, L.C.C. et al. Correlation between quadrupole splitting (Δ) and the θ 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 Met Chem 32, 649–655 (2007). https://doi.org/10.1007/s11243-007-0225-3

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