Hydrogen-bonded supramolecular motifs in trimethoprim-terephthalate-terephthalic acid (2/1/1)

被引：16

作者：

Hemamalini, M

Muthiah, PT ^{[1
]}

Bocelli, G

Cantoni, A

机构：

[1] Bharathidasan Univ, Dept Chem, Tiruchirappalli 620024, India

[2] CNR, IMEM, I-43100 Parma, Italy

来源：

ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE | 2003年 / 59卷

关键词：

D O I：

10.1107/S1600536802021670

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

In the title compound [2,4-diamino-5-(3,4,5-trimethoxybenzyl)pyrimidin-1-ium terephthalate terephthalic acid], 2C(14)H(19)N(4)O(3)(+).C8H4O42-.C8H6O4, the trimethoprim molecule is protonated at one of the pyrimidine N atoms. The terephthalate anion and terephthalic acid molecule are centrosymmetric. The carboxylate groups of the terephthalate anion form double hydrogen bonds of type N-H...O, resulting in a fork-like interaction with the protonated diaminopyrimidine rings.

引用

页码：O14 / O17

页数：4

共 29 条

[1] Probabilities of formation of bimolecular cyclic hydrogen-bonded motifs in organic crystal structures: a systematic database analysis [J].