Synthesis and characterisation of organotin(IV) derivatives of ambidentate ligands containing nitrogen and sulphur donor atoms
Autor: | José Roberto da Silveira Maia, Rafael César Russo Chagas, Vany P. Ferraz |
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Jazyk: | angličtina |
Rok vydání: | 2011 |
Předmět: |
bis(pyrimidin-2-ylthio)alkane
Denticity Ligand Inorganic chemistry Metals and Alloys chemistry.chemical_element Infrared spectroscopy General Chemistry Condensed Matter Physics Medicinal chemistry gel permeation chromatography (gpc) Gel permeation chromatography chemistry.chemical_compound Chemistry Molecular geometry chemistry polyfunctional ligands infrared Materials Chemistry Chelation 119sn nmr Tin organotin QD1-999 Dichloromethane |
Zdroj: | Main Group Metal Chemistry, Vol 34, Iss 5-6, Pp 131-137 (2011) |
ISSN: | 2191-0219 0792-1241 |
Popis: | A series of organotin(IV) derivatives of bis(pyrimidin-2-ylthio)methane (ptm), 1,2-bis(pyrimidin-2-ylthio)ethane (pte) and 1,6-bis(pyrimidin-2-ylthio)hexane (pth) have been prepared in dichloromethane at room temperature. The 2:1 (M/L) molar ratio compounds have a general formula of [Sn2ClxPh8-xL] (x=2, 4, 6, 8; L=ptm, pte and pth). A 1:1 complex was also obtained by reacting SnClPh3 with pth. The organotin derivatives were characterised by multinuclear NMR (1H, 13C and 119Sn) and infrared spectroscopy, gel permeation chromatography (GPC), microanalysis and melting point. In the triphenyltin derivatives, 1, 5, 9 and 10 the tin atoms show a distorted trigonal-bipyramidal configuration where the ligand is monodentate towards the metal atom. In the compounds 2–4, 6–8 and 11–13, the tin atoms each exhibit a distorted octahedral configuration. Chelation is formed between the tin nucleus and the coordinating sulphur and nitrogen atoms. The correlation between the 1J(13C-119Sn) and C-Sn-C bond angle indicates formation of 5-coordinate compounds. |
Databáze: | OpenAIRE |
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