کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1404466 | 1501910 | 2007 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Syntheses, structural and spectral studies of six-coordinate, [Ph2SnCl(acpm)], and seven-coordinate, [nBu2Sn(dapm)], diorganotin(IV) complexes with N,N,S-tridentate and S,N,N,N,S-pentadentate N4-heterocyclic thiosemicarbazones Syntheses, structural and spectral studies of six-coordinate, [Ph2SnCl(acpm)], and seven-coordinate, [nBu2Sn(dapm)], diorganotin(IV) complexes with N,N,S-tridentate and S,N,N,N,S-pentadentate N4-heterocyclic thiosemicarbazones](/preview/png/1404466.png)
The reaction of the N,N,S-tridentate ligand 2-acetylpyridine (N4-morpholyl thiosemicarbazones), Hacpm, with Ph2SnCl2 leads to the formation of the six-coordinate complex [Ph2SnCl(acpm)] (1), whereas the reaction of the S,N,N,N,S-pentadentate ligand 2,6-diacetylpyridine bis(N4-morpholyl thiosemicarbazone), H2dapm, with nBu2SnCl2 leads to the formation of the seven-coordinate complex [nBu2Sn(dapm)] (2). Both compounds were studied by microanalyses, IR, NMR (1H, 13C, 119Sn) and Mössbauer spectroscopy to investigate their structural properties. The organotin(IV) complexes were also studied by single crystal X-ray diffraction and the structure determination revealed that the phenyl derivative crystallizes in the triclinic space group (P1¯) as discrete neutral molecules, with the tin(IV) ion in a distorted octahedral geometry with the acpm1− ligand in a meridional configuration and the phenyl groups in trans positions. X-ray analysis shows that the n-butyl complex crystallizes in the monoclinic space group (P21/c) as discrete neutral complexes, with the tin(IV) ion in a distorted pentagonal bipyramidal geometry. A correlation between Mössbauer and X-ray data based on the point-charge model is discussed.
Journal: Journal of Molecular Structure - Volume 826, Issues 2–3, 29 January 2007, Pages 185–191