M. Du, Zhihui Zhang, and Xiao-Jun Zhao
2006
Citations
1
Influential Citations
75
Citations
Quality indicators
Journal
Crystal Growth & Design
Abstract
On the basis of the primary carboxyl/pyridyl hydrogen-bonded synthon, 2,5-bis(3-pyridyl)-1,3,4-oxadiazole (3-bpo) and its 4-N-donor isomer 2,5-bis(4-pyridyl)-1,3,4-oxadiazole (4-bpo) were assembled with flexible dicarboxylic acids possessing variable chain lengths to afford a series of organic cocrystalline materials. [Fumaric acid]·[3-bpo] (1) has a two-dimensional (2-D) layered supramolecular pattern. [Fumaric acid]·[4-bpo] (2) has linear tapes connected via carboxyl/pyridyl heterosynthons and further creates a three-dimensional (3-D) square net with the CdSO4 topology combining with other weak interactions. [Suberic acid]·[3-bpo] (3), obtained in ambient conditions, exhibits a 3-D corrugated network; however, [suberic acid]·[4-bph] (4), produced unexpectedly by hydrothermal synthesis, displays a 3-D framework expanding from 2-D layers, in which N,N‘-bis(4-picolinoyl) hydrazine (4-bph) is generated in situ from the hydrolysis of 4-bpo. [Benzene-1,4-dioxyacetic acid]·[3-bpo] (5) takes on a nearly planar ...