Correlation between quadrupole splitting ('delta') and the 'teta' angle (C-Sn-C) in five-coordinate diphenyltin(IV) complexes. X-ray crystal structures of ['Ph IND. 2'Sn(hacm)] and ['Ph IND. 2'Sn(hacmm)] containing O, N, S-tridentate 'N POT. 4'-heterocyclic thiosemicarbazones - Sousa, Gerimário Freitas de; Deflon, Victor Marcelo; Manso, Luís Carlos C.; Ellena, Javier; Mascarenhas, Yvonne Primerano; Lang, Ernesto S.; Gatto, Claudia C.; Mahieu, Bernard (Transition Metal Chemistry, 2007)