title: Dimeth-yl(4-methyl-phen-yl)ammonium naphthalene-1,5-disulfonate dihydrate.
abstract: The asymmetric unit of the organic-inorganic hybrid salt, 2C(9)H(14)N(+)·C(10)H(6)O(6)S(2) (2-)·2H(2)O, consists of one dimeth-yl(4-methyl-phen-yl)ammonium cation, one half of a naphthalene-1,5-disulfonate anion lying on a crystallographic centre of inversion, and one water mol-ecule. In the crystal, O-H⋯O(S) and N-H⋯OH(2) hydrogen bonds link the cations and anions forming ring motifs.
authors: Ordered Matter Science Research Center, Southeast University, Nanjing 211189,  People's Republic of China.
authors: Bin
authors: B
authors: Wei