title: (2'-Amino-4,4'-bi-1,3-thia-zol-2-aminium-κN,N')aqua-[citrato(4-)-κO,O',O'')chromium(III) dihydrate.
abstract: In the title compound, [Cr(C(6)H(7)N(4)S(2))(C(6)H(4)O(7))(H(2)O)]·2H(2)O, the Cr(III) atom is in a distorted octa-hedral environment, coordinated by one water mol-ecule, two N atoms from a protonated diamino-bithia-zole ligand and three O atoms from a citrate(4-) anion. The complex is zwitterionic, with the H atom from the uncoordinated carboxyl-ate group of the citrate anion transferred to one amino group of the diamino-bithia-zole ligand. O-H⋯O and N-H⋯O hydrogen bonds link the complexes into layers including the two uncoordinated water mol-ecules.
authors.forename: Bing-Xin
authors.initials: BX
authors.lastname: Liu
authors.forename: Mei
authors.initials: M
authors.lastname: Du
authors.forename: Guang-Hua
authors.initials: GH
authors.lastname: Chen
authors.forename: Xiao-Yuan
authors.initials: XY
authors.lastname: Sun