A novel 3D organic–inorganic hybrid based on sandwich-type cadmium hetereopolymolybdate: {[Cd4(H2O)2(2,2′-bpy)2] Cd[Mo6O12(OH)3(PO4)2(HPO4)2]2}[Mo2O4(2,2′-bpy)2]2·3H2O

The sandwich-type units [Cd 4 (H 2 O) 2 (2,2′- bpy) 2 ]Cd[Mo 6 O 12 (OH) 3 (PO 4 ) 2 (HPO 4 ) 2 ] 2 are connected by octahedrally coordinated cadmium into a chain {[Cd 4 ]Cd[Mo 6 P 4 ] 2 } n . The coordination cations [Mo 2 O 4 (2,2′-bpy) 2 ] 2+ link to the neighboring chains, forming a 3D open framework structure. The title organic–inorganic hybrid cadmium molybdenum(V) phosphate has been hydrothermally synthesized. The sandwich-type units [Cd 4 (H 2 O) 2 (2,2′-bpy) 2 ]Cd[Mo 6 O 12 (OH) 3 (PO 4 ) 2 (HPO 4 ) 2 ] 2 ([Cd 4 ]Cd[Mo 6 P 4 ] 2 ) are connected by octahedrally coordinated cadmium into a chain {[Cd 4 ]Cd[Mo 6 P 4 ] 2 } n . The coordination cations [Mo 2 O 4 (2,2′-bpy) 2 ] 2+ link to the neighboring chains, forming a 3D open framework structure. The title complex represents the first sandwich-type cadmium hetereopolymolybdate with 3D network.