A New 3D Supramolecular Complex(Dimethylammonium 4,4'-([2,2'-Bipyrimidine]-5,5'-diyl)bis(2-hydroxybenzoate)Dihydrate):Synthesis,Structure =and Luminescent Property

A new 3D supramolecular complex, namely dimethylammonium 4,4'-([2,2'-bipyrimidine]-5, 5'-diyl)bis(2-hydroxybenzoate) dihydrate, has been synthesized by the reaction of 4,4'-([2,2'-bipyrimidine]-5, 5'-diyl)bis(2-hydroxybenzoic acid) with aqueous dimethylamine solution and characterized by single-crystal X-ray diffraction, H-1 NMR spectroscopy and elemental analysis. It belongs to triclinic system, space group P (1) over bar with a = 6.5539(4), b = 9.4977(6), c = 12.1407(8) angstrom, alpha = 72.299(6), beta = 89.160(5), gamma = 70.797(8)degrees, V = 676.52(8) angstrom(3), Z = 1, M-r = 556.57, mu = 0.103 mm(-1), D-c = 1.366 g/cm(3), F(000) = 294, the final R =0.0828 and wR = 0.2083 for 1934 observed reflections with I > 2 sigma(I). The 4,4'-([2,2'-bipyrimidine]-5,5'-diyl)bis(2-hydroxybenzoic acid) dianion, dimethylammonium cation, and water molecule are interconnected by O-H center dot center dot center dot O, N-H center dot center dot center dot N, and N-H center dot center dot center dot O hydrogen bonds, forming a two-dimensional (2D) layer. Two adjacent 2D layers are further stacked into a three-dimensional supramolecular structure through O-H center dot center dot center dot O hydrogen bonds. In addition, the luminescent property of this supramolecular complex has also been investigated.