@article{sousa_valdés-martínez_pérez_toscano_abras_filgueiras_2002,  title={Heptacoordination in Organotin(IV) Complexes: Spectroscopic and Structural Studies of 2,6–Diacetylpyridine bis(thiosemicarbazone)di–n–butyltin(IV) Chloride Nitromethane Solvate, [nBu2Sn(H2daptsc)]Cl 2•MeNO2 and of 2,6–Diacetylpyridine bis(semicarbazone)dimethyltin(IV) trans–Tetrachlorodimethylstannate(IV), [Me2Sn(H2dapsc)][Me2 SnCl4]},  volume={13},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532002000500003},  DOI={10.1590/S0103-50532002000500003},  number={5},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Sousa, Gerimário F. de and Valdés-Martínez, Jesús and Pérez, Georgina E. and Toscano, Rubén A. and Abras, Anuar and Filgueiras, Carlos A. L.},  year={2002},  month={Sep},  pages={559–564} }