摘要
Two new transition-metal gallophosphates, (H 3 DETA)[Mn(H 2 O) 2 Ga(PO 4 ) 2 ] 3 (1) and (H 3 DETA)[Zn 3 Ga(PO 4 ) 4 ] ·H 2 O (2) (DETA = NH 2 (CH 2 ) 2 NH(CH 2 ) 2 NH 2 ), have been synthesized under mild hydrothermal conditions and characterized by single-crystal X-ray diffraction, thermogravimetric analysis, and magnetic susceptibility data. They are the first transitionmetal gallophosphates that adopt chiral frameworks with achiral triamine templates. Both can be prepared in pure chiral forms. The structure of 1 consists of octahedra of MnO 4 (H 2 O) 2 and tetrahedra of GaO 4 and PO 4 to form a three-dimensional 4-connected polyhedral network in CZP topology. The most interesting feature lies in the fact that the structure is well-sustained with all water ligands removed from the octahedral Mn 2+ centers. The dehydration -hydration process for the coordination water is reversible. On the basis of TG analysis, material 1 can be thermally stable up to ≈300 °C. Material 2 is built up with tetrahedra of MO 4 (M = Zn and Ga) and PO 4 and crystallizes in the UCSB-7 structure type. It has the highest transition-metal-to-gallium ratio among MGaPOs. Crystal data: 1, orthorhombic, C222 1 , a = 10.0390(6) Å, b = 17.389(1) Å, c = 16.7356(9) Å, Z = 4; 2, cubic, 14 1 32, a = 17.9192(6) Å, Z = 12.