Syntheses and characterization of two new zinc phosphites with 1D chains decorated by Zn-centered complexes

Abstract

Two inorganic–organic hybrid solids, Zn 2(phen)(HPO 3) 2 ( 1) and Zn(phen)(HPO 3) ( 2), have been synthesized under solvothermal conditions in the presence of 1,10-phenanthroline (phen) ligands. Their structures were determined by single-crystal X-ray diffraction and further characterized by FTIR, elemental analysis, powder X-ray diffraction, thermogravimetric analysis and fluorescent spectra. Compound 1 crystallizes in the triclnic system, space group P-1, a = 8.1813 ( 3 ) Å , b = 8.5535 ( 3 ) Å , c = 12.3031 ( 5 ) Å , α = 75.609 ( 1 ) ° , β = 79.145 ( 2 ) ° , γ = 67.157 ( 2 ) ° , V = 764.46 ( 5 ) Å 3 , Z = 2 . Compound 2 is monoclinic, C 2 / c , a = 16.1044 ( 7 ) Å , b = 18.9447 ( 6 ) Å , c = 8.1713 ( 6 ) Å , β = 94.175 ( 4 ) ° , V = 2486.4 ( 2 ) Å 3 , Z = 8 . Both structures consist of 1D chains constructed from strictly alternating ZnO 4 and HPO 3 polyhedra through sharing vertices. The chains are further decorated by Zn-centered complex architectures, [Zn(phen)] 2+ for 1 and [Zn(phen) 2] 2+ for 2. The 2D and 3D supramolecular arrays for 1 and 2 are stably stacked via strong π– π interactions of the phen groups, respectively.