Hydrothermal synthesis and characterization of a new organically templated three-dimensional open-framework gallium phosphate-phosphite (C6N2H18)2(C6N2H17)Ga15(OH)8(PO4)2(HPO4)12(HPO3)6A.2H2O

Using H3PO3 as a phosphorus source and oxalic acid as a reducing agent, the first three-dimensional open-framework gallium phosphate-phosphite formula as (C6N2H18)2(C6N2H17)Ga15(OH)8(PO4)2(HPO4)12(HPO3)6A.2H2O (1), has been hydrothermally synthesized in the presence of N,N,Na super(2),Na super(2)-tetramethylenediamine (TMEDA) as a structure-directing agent. Compound 1 crystallizes in trigonal system with space group P a degree 3, a = b =19.046(3)a"', c =8.3306(17)a"', I[sup3 =120A degree , V =2617.1(7)a"'3, and Z =1. Its 3-D network is based on alternated Ga-centered (GaO4 tetrahedra, GaO5 trigonal bipyramids, and GaO6 octahedra) and P-centered (PO4 3a degree , HPO4 2a degree , and HPO3 2a degree ) units. Protonated organic amines and water molecules are located in the 12-membered ring channels. Display Omitted