Diorganotin(IV)benzoates: Structure, stability and equilibrium analysis by 1H and 119Sn NMR spectroscopy in acid solution

被引：1
|
作者：
Martinez Garcia, Juan Carlos [1 ]
Montes Tolentino, Pedro [1 ]
Hernandez Ahuactzi, Iran F. [2 ]
Godoy Alcantar, Carolina [1 ]
Ariza-Castolo, Armando [3 ]
Guerrero Alvarez, Jorge Antonio [1 ]
机构：
[1] Univ Autonoma Estado Morelos, Ctr Invest Quim, Inst Invest Ciencias Basicas & Aplicadas, Av Univ 1001, Cuernavaca 62209, Morelos, Mexico
[2] Univ Guadalajara, Ctr Univ Tonala, Av Nuevo Periferico 555, Tonala 48525, Jalisco, Mexico
[3] Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Dept Quim, Av IPN 2508, San Pedro Zacatenco 07360, Mexico
来源：
JOURNAL OF MOLECULAR STRUCTURE | 2020年 / 1209卷
关键词：
Four- and five-coordinate tin; Acid-base; Multinuclear magnetic resonance; Diorganotin(IV) carboxylates; Electrostatic potential; ORGANOTIN(IV) COMPLEXES; ANTITUMOR-ACTIVITY; IONIZATION; LIGANDS;
D O I：
10.1016/j.molstruc.2020.127915
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ten dibutyltin(IV) dicarboxylates were synthesized by a procedure based on a reactor and characterized by various structural elucidation techniques such as elemental analysis IR spectroscopy, FAB(+) and CI+ mass spectrometry, 1D and 2D(13)C and Sn-119 NMR experiments and TGA. A linear relationship between the sigma(Hammett) and Sn-119 NMR chemical shift was found due to the electron-withdrawing and electron-donating groups. H-1 and Sn-119 NMR titration experiments with DCI were carried in CD3OD solution to estimate the stability of the complexes and study the equilibrium between four- and five-coordinate complexes. The most basic sites for protonation were determined by analysis of the electrostatic potential by theoretical calculations. (C) 2020 Elsevier B.V. All rights reserved.
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页数：7
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