4,4'-Bipyridine-pyridine-3,5-dicarb-oxy-lic acid (3/4).

4,4'-Bipyridine-pyridine-3,5-dicarb-oxy-lic acid (3/4).
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DOI:
10.1107/s160053681102719x
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发表时间:
2011-08-01
期刊:
Acta crystallographica. Section E, Structure reports online
影响因子:
--
通讯作者:
Zhang QF
Zhang QF
中科院分区:
其他
文献类型:
--
作者:
Liu SB;Xu C;Duan T;Chen Q;Zhang QF

文献摘要

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在标题化合物3C_(10)H_8 N_2·4C_7 H_5 NO_4中,不对称结构单元在一般位置上含有2个吡啶-3,5-二羧酸基丙酸分子和1个4,4 ′-联吡啶分子,以及1个4,4 ′-联吡啶分子位于一个反位中心上,从而使吡啶-3,5-二羧酸基丙酸与4,4 ′-联吡啶的摩尔比为4:3。一般位置上联吡啶环间的二面角为21.2(2)°。 这些分子单元通过O-H-N氢键连接,在晶体中形成扩展的二维骨架。
In the title compound, 3C10H8N2·4C7H5NO4, the asymmetric unit contains two mol­ecules of pyridine-3,5-dicarb­oxy­lic acid and one mol­ecule of 4,4′-bipyridine in general positions together with one mol­ecule of 4,4′-bipyridine lying across a centre of inversion, thus giving a 4:3 molar ratio of pyridine-3,5-dicarb­oxy­lic acid to 4,4′-bipyridine. The dihedral angle between the bipyridine rings on general positions is 21.2 (2)°. These mol­ecular units are linked by O—H⋯N hydrogen bonds forming an extended two-dimensional framework in the crystal.