Berrah Fadila, Bouchene Rafika, Bouacida Sofiane, Roisnel Thierry
Acta Crystallogr Sect E Struct Rep Online. 2012 Apr 1;68(Pt 4):o1116. doi: 10.1107/S1600536812011154. Epub 2012 Mar 21.
The two-dimensional crystal packing of the title compound, C(3)H(5)N(4)O(2) (+)·NO(2) (-)·H(2)O, results from the stacking of well separated layers (i.e. with nothing between the layers) parallel to the (-113) plane in which adjacent cations adopt a head-to-head arrangement such that two -COOH groups are linked via two water mol-ecules (the water O atom behaves simultaneously as donor and acceptor of hydrogen bonds) and two -NH(2) groups are linked through two nitrate anions. This arrangement leads to alternating hydro-philic and hydro-phobic zones in which O-H⋯O and N-H⋯O hydrogen bonds, respectively, are observed.
标题化合物C(3)H(5)N(4)O(2) (+)·NO(2) (-)·H(2)O的二维晶体堆积是由平行于(-113)平面的完全分离的层（即层间无其他物质）堆叠而成，其中相邻阳离子呈头对头排列，使得两个-COOH基团通过两个水分子相连（水的O原子同时作为氢键的供体和受体），两个-NH(2)基团通过两个硝酸根阴离子相连。这种排列导致交替出现亲水和疏水区域，分别观察到O-H⋯O和N-H⋯O氢键。
