Reaction of R(Ph)SnCl 2(R=Me, Et) with 2,6-diacetylpyridine bis(thiosemicarbazone) (H 2DAPTSC): the crystal structures of [Me(Ph)Sn(HDAPTSC)]Cl · 1.25 MeOH and [Et(Ph)Sn(H 2DAPTSC)]Cl 2 · MeOH · H 2O

• Published in: Inorganica Chimica Acta Vol. 357; no. 8; pp. 2324 - 2330
• Main Authors: Casas, José.S., Castellano, Eduardo E., Ellena, Javier, Garcı́a-Tasende, Marı́a S., Sánchez, Agustı́n, Sordo, José, Vidarte, Marı́a J.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2004
• Subjects: 119Sn NMR spectroscopy; 1H NMR spectroscopy; 2,6-Diacetylpyridine bis(thiosemicarbazone); Ethylphenyltin(IV) dichloride; Methylphenyltin(IV) dichloride; Mixed diorganotin(IV) compounds; X-ray diffractometry; Methylphenyltin(IV) dichloride; Ethylphenyltin(IV) dichloride; 2,6-Diacetylpyridine bis(thiosemicarbazone); X-ray diffractometry; 1H NMR spectroscopy; Mixed diorganotin(IV) compounds; 119Sn NMR spectroscopy
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/j.ica.2004.01.014

Complexes of R(Ph)SnCl 2 (R=Me, Et) with 2,6-diacetylpyridine bis(thiosemicarbazone) have been synthesized and characterized by X-ray crystallography, 1H and 119Sn NMR spectroscopy and conductivity measurements. The crystal structures of [Me(Ph)Sn(HDAPTSC)]Cl · 1.25MeOH ( 1) and [Et(Ph)Sn(H 2DAPTSC)]Cl 2 · MeOH · H 2O ( 2) contain the ligand, monodeprotonated or neutral, acting as pentadentate. NMR studies in DMSO solution suggest the total dissociation of ( 2), whereas ( 1) evolves to form the new complex [Me(Ph)Sn(DAPTSC)]. The reactions of Me(Ph)SnCl 2 and Et(Ph)SnCl 2 with 2,6-diacetylpyridine bis(thiosemicarbazone) (H 2DAPTSC) afforded the complexes [Me(Ph)Sn(HDAPTSC)]Cl · 1.25MeOH ( 1) and [Et(Ph)Sn(H 2DAPTSC)]Cl 2 · MeOH · H 2O ( 2), respectively. Single-crystal X-ray crystallography showed that in both complexes the ligand, monodeprotonated in 1 and neutral in 2, is S(1),S(2),N(3),N(4),N(5)-coordinated, and the coordination geometry around the metal can be described as a distorted pentagonal bipyramid with the aryl and alkyl groups in axial positions. 1H and 119Sn NMR studies of solution in DMSO suggest that 2 dissociates completely in this solvent, while 1 evolves to the new complex [Me(Ph)Sn(DAPTSC)], with release of H 2DAPTSC and Me(Ph)SnCl 2. These conclusions were also supported by conductivity measurements.