Spectral study of specific interactions between zwitterionic compounds and protic solvents

被引：8
作者：
Babusca, Daniela [1 ]
Morosanu, Cezarina [1 ]
Dorohoi, Dana Ortansa [1 ]
机构：
[1] Alexandru Ioan Cuza Univ, Fac Phys, Carol 1 Bvd, RO-700506 Iasi, Romania
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2017年 / 172卷
关键词：
Pyridinium dicarbethoxy methylid; Iso-quinolinium dicarbethoxy methylid; Visible electronic absorption spectra; Specific interactions; Protic and aprotic solvents; SOLVATOCHROMIC COMPARISON METHOD; ELECTRONIC-ABSORPTION-SPECTRA; PI-STAR SCALE; INTERMOLECULAR INTERACTIONS; ACTIVE MOLECULES;
D O I：
10.1016/j.saa.2016.04.034
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The zwitterionic compounds, like ylids, can interact both by universal and specific forces with the protic solvents. Ylids have a visible electronic absorption band with intramolecular charge transfer (ICT), very sensitive to the solvent nature and considered as an indicator of their stability. Two zwitterionic compounds: pyridinium dicarbethoxy methylid and iso-quinolinium dicarbethoxy methylid were studied from solvatochromic point of view and the contribution of solute-solvent specific interactions to the total spectral shift of the visible ICT band was established. Ternary solutions of the studied ylids were used to estimate the difference of interaction energies in molecular pairs ylid-protic solvent and ylid-aprotic solvent in the limits of the cell model of three component solutions. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：58 / 64
页数：7
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