Tetraaquatetrakis{μ2-[1-(carboxylatomethyl)cyclohexyl]methanaminium}bis(μ3-hydroxido)bis(nitrato-κ2O,O′)tetrazinc(II)

Abstract

As the title gabapentin complex, [Zn4(OH)2(NO3)2(C9H17NO2)4(H2O)4](NO3)4 is located about a centre of inversion, the asymmetric unit contains two disordered nitrate ions and half a complex molecule. The two zinc ions have different coordination environments: one is slightly distorted octahedral and the other is trigonal–pyramidal. The conformation of the gabapentin molecule is defined by the formation of two intramolecular O—H...O hydrogen bonds. Furthermore, the ammonium H atoms are involved in numerous hydrogen bonds with the disordered nitrate anions.