title: Crystal structure of hexa-aqua-nickel(II) bis-{5-bromo-7-[(2-hy-droxy-eth-yl)amino]-1-methyl-6-oxido-quinolin-1-ium-3-sulfonate} monohydrate.
abstract: The asymmetric unit of the title compound, [Ni(H2O)6](C12H12BrN2O5S)2·H2O, contains a half hexa-aqua-nickel(II) complex cation with the NiIIion lying on an inversion center, one 5-bromo-7-[(2-hy-droxy-eth-yl)amino]-1-methyl-6-oxido-quinolin-1-ium-3-sulfonate (QAO) anion and a half lattice water mol-ecule on a twofold rotation axis. In the crystal,QAOanions are stacked in a column along thecaxis by π-π stacking inter-actions [centroid-centroid distances 3.5922 (10)-3.7223 (11) Å]. The columns are inter-linked by hexa-aqua-nickel(II) cations through O-H⋯O and N-H⋯O hydrogen bonds.
authors.affiliation: Chemistry Department, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Hanoi, Vietnam.
authors.forename: Hai
authors.initials: H
authors.lastname: Le Thi Hong
authors.affiliation: Chemistry Department, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Hanoi, Vietnam.
authors.forename: Vinh
authors.initials: V
authors.lastname: Nguyen Thi Ngoc
authors.affiliation: Chemistry Department, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Hanoi, Vietnam.
authors.forename: Anh
authors.initials: A
authors.lastname: Do Thi Van
authors.affiliation: KU Leuven - University of Leuven, Department of Chemistry, Celestijnenlaan 200F - bus 2404, B-3001 Heverlee, Belgium.
authors.forename: Luc
authors.initials: L
authors.lastname: Van Meervelt
keywords: crystal structure; hydrogen bonding; quinoline; π–π stacking