2-Aminopyridinium maleate: A structural study

被引：19

作者：

Chitra, R. ^{[1
]}

Roussel, Pascal ^{[2
]}

Capet, Fredric ^{[2
]}

Murli, Chitra ^{[3
]}

Choudhury, R. R. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Div Solid State Phys, Bombay 400085, Maharashtra, India

[2] ENSC Lille UST Lille, CNRS, UMR 8181, UCCS, F-59652 Villeneuve Dascq, France

[3] Bhabha Atom Res Ctr, High Pressure Phys Div, Bombay 400085, Maharashtra, India

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2008年 / 891卷 / 1-3期

关键词：

2-Aminopyridinium; Maleate; Single crystal X-ray diffraction; Raman scattering; DSC; Phase transition;

D O I：

10.1016/j.molstruc.2008.03.014

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：

A new complex of 2-aminopyridine and maleate in 1:1 stoichiometric ratio was obtained. The complex crystallizes in non-centrosymmetric space group Pc. This complex is held by network of hydrogen bonding between the protonated 2-aminopyridinium cation and maleate anion and also by pi-pi stacking. There is no phase transition observed in this complex, which has been verified using DSC and single crystal X-ray measurement studies. A comparison between 2-aminopyridinium maleate and bis(2-aminopyridinium) maleate structure shows that the positive charge resides on the ring nitrogen in the present complex unlike the case in bis(2-aminopyridinium) maleate where the charge is on the amino nitrogen. This complex has higher meting point compared to that of bis(2-aminopyridinium) maleate which is due to the difference in hydrogen bonding pattern between the two complexes. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：103 / 109

页数：7

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