Organotin(IV) Derivatives of 2-Acetylpyridine-N(4)-Phenylthiosemicarbazone, HAP4P, and 2-Hydroxyacetophenone-N(4)-Phenylthiosemicarbazone, H2DAP4P: Crystal and Molecular Structure of [SnMe2(DAP4P)] and [SnBu2(DAP4P)]

Abstract

As reações de 2-acetilpiridina-N(4)-feniltiosemicarbazona, HAP4P, e 2-hydroxiacetofenona-N(4)-feniltiosemicarbazona, H 2 DAP4P, com R 4-m SnX m (m = 2, 3; R = Me, n Bu, Ph e X = Cl, Br) levaram à formação de complexos organoestânicos hexa-e penta-coordenados, que foram estudados por análise elementar, espectroscopias no IV, RMN de 1 H e Mössbauer.

Synthesis, spectroscopic characterization and X-ray structures of five-coordinate diorganotin(IV) complexes containing 5-hydroxypyrazoline derivatives as ligands

“…Now, using our alternative values for [Me] = À0.84 mm/s and for [Ph] = À0.77 mm/s, we predict Me-Sn-Me and Ph-Sn-Ph angles of 123.7°and 119.7°for complexes 1 and 6, respectively. The average value of À0.77 mm/s is very far from the value for [Ph] = À0.98 mm/s previously reported[10] by Bancroft's team, but it is in good agreement with calculated value of [Ph] = À0.75 mm/s reported recently by us[24].…”

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

“…The Lower quadrupole splitting values for complexes (1), (2) and (9) indicate that the charge distribution around the tin(IV) nucleus is more symmetrical and their geometry is considerably less distorted [21]. These results are supported by X-ray crystallography data which shows that these three compounds possess the equatorial angle C-Sn-C very close from the ideal value of 120°observed in trigonal bipyramidal geometry.…”

Bonding and structure trends of thiosemicarbazone derivatives of metals—An overview

“…The halogen or oxygen {from diphenylthiophosphinato {Ph 2 P( S)O − } occupy the axial sites. Complexes [R 2 SnL] have di-anionic tridentate, N 4 , N 3 , S (522) [362], or N 3 , S, O-donor ligands (523-526) [363,364], while [R 2 Sn(HL)] 527 [365] has monoanionic ligand (deprotonation of the hydroxyl group) (Chart 70).…”