Mixed crystals of pyrazoles and benzoic acids .1. The molecular structure of 3,5-dimethylpyrazole-2,4,6-trimethylbenzoic acid co-crystals

被引：11

作者：

FocesFoces, C

Infantes, L

AguilarParrilla, F

Golubev, NS

Limbach, HH

Elguero, J

机构：

[1] FREE UNIV BERLIN,INST ORGAN CHEM WE02,FACHBEREICH CHEM,D-14195 BERLIN,GERMANY

[2] CSIC,INST QUIM MED,E-28006 MADRID,SPAIN

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1996年 / 03期

关键词：

D O I：

10.1039/p29960000349

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The title compound 4a has been prepared by slow evaporation of an equimolar mixture of 2,4,6-trimethylbenzoic acid (mesitylenecarboxylic acid) and 3,5-dimethylpyrazole. Two pyrazoles and two benzoic acids form a tetramer unit through N-H ... O and O-H ... N hydrogen bonds, The pyrazole rings in 4a show standard geometries, Variable temperature N-15 CPMAS NMR experiments showed that no dynamic process takes place in 4a, which is consistent with results of low temperature (77 K) FTIR spectroscopy, This fact can be explained taking into account the acid-base properties of both components.

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页码：349 / 353

页数：5

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