Inorganic Chemistry, Vol.37, No.17, 4220-4222, 1998
Synthesis and structure of [(1R,2R)-C6H10(NH3)(2)][Ga(OH)(HPO4)2]center dot H2O,the first metal phosphate containing a chiral amine
The first metal phosphate containing a chiral amine, [(1R,2R)-C6H10(NH3)(2)] [Ga(OH)(MPO4)(2)]. H2O, has been synthesized hydrothermally and characterized by single-crystal X-ray diffract ion. It crystallizes in the monoclinic space group P2(1) with a = 8.7202(2) Angstrom, b = 7.1276(2) Angstrom, c = 11.1411(4) Angstrom, beta = 96.129(1)degrees, and Z = 2. The structure consists of infinite chains of trans-corner-sharing GaO5(OH) octahedra with the adjacent octahedra being bridged by HPO4 groups, which are H-bonded with amine groups of the organic cations and the lattice water. The Ga-O bond lengths along the backbone of the chain are alternately short and long. For comparison, the gallophosphate-containing racemic mix is also synthesized. [trans-1,2-C6H10(NH3)(2)] [Ga(OH)(HPO4)(2)]. H2O crystallizes in the centrosymmetric, orthorhombic space group Pbcm with a 8.6993(2) Angstrom, b = 21.8612(1) Angstrom, c = 7.1557(2) Angstrom, V = 1360.85(5) Angstrom(3), and Z = 4.