期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 754, 期 -, 页码 26-31出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2013.12.034
关键词
Binuclear complexes; Crystal structure; Organotin(IV); Dihydrazone; Sn-119 NMR
资金
- Shahid Chamran University, Ahvaz, Iran [1392]
Four new dinuclear organotin(IV) complexes, (R2Sn)(2)L-a [R = Me (1), R = Ph (2)] and (R2Sn)(2)L-b [R = Me (3), R = Ph (4)], have been synthesized from the reaction of R2SnCl2 (R = Me or Ph) with bis(2-hydroxy-3-methoxybenzylidene) succinohydrazide (H4La) and bis(5-bromo-2-hydroxybenzylidene) succinohydrazide (H4Lb). The synthesized compounds have been investigated by elemental analysis, IR, H-1 NMR, C-13 NMR and Sn-119 NMR spectroscopy. The results show the all complexes are dinuclear and two doubly deprotonated tridentate domain of the acyldihydrazone is coordinated to two SnR2 moieties via phenolic oxygen, imine nitrogen and enolic oxygen. The structures of 1 and 3 have been also confirmed by X-ray crystallography. Both complexes are centrosymmetry with the alkyl linker chain shows anti conformation. The intermolecular weak Sn . . . O bonds lead to 1D polymeric chain containing four-membered Sn2O2 planar rings. On the basis of Sn-119 NMR data coordination number of tin is five in solution. (C) 2013 Elsevier B. V. All rights reserved.
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