Molecular cocrystals of carboxylic acids .25. The utility of urea in structure making with carboxylic acids and the crystal structures of a set of six adducts with aromatic acids

被引：55

作者：

Smith, G ^{[1
]}

Baldry, KE ^{[1
]}

Byriel, KA ^{[1
]}

Kennard, CHL ^{[1
]}

机构：

[1] UNIV QUEENSLAND,DEPT CHEM,BRISBANE,QLD 4072,AUSTRALIA

来源：

AUSTRALIAN JOURNAL OF CHEMISTRY | 1997年 / 50卷 / 07期

关键词：

3,5-DINITROSALICYLIC ACID; NEUTRON-DIFFRACTION; SALICYLIC-ACID; COMPLEXES;

D O I：

10.1071/C96199

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Molecular adducts of urea with six aromatic carboxylic acids have been prepared and characterized by using X-ray diffraction methods and infrared spectroscopy. These compounds are with 5-nitrosalicylic acid [(C7H5NO5)(2)(CH4N2O)] (1), 3,5-dinitrosalicylic acid [(C7H4N2O7)(CH4N2O)] (2), 4-aminobenzoic acid [(C7H7NO2)(2)(CH4N2O)] (3), o-phthalic acid [(C8H6O4)(CH4N2O)] (4), pyrazine-2,3-dicarboxylic acid [(C4H4N2O4)(CH4N2O)] (5) and pyridine-2,6-dicarboxylic acid [(C7H5NO4)(CH4N2O)(2)] (6). In the majority of the adducts, all six potential interactive sites on the urea molecules are utilized in hydrogen bonding, giving polymeric structures.

引用

页码：727 / 736

页数：10

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