Two New Closely Related Mo V Hydroxymonophosphates Built Up of Cd[Mo 6 P 4 O 25 (OH) 6 ] 2 And Cd[Mo 6 P 4 O 26 (OH) 5 ] 2 Clusters

Two new molybdenum(v) hydroxyphosphates have been synthesized hydrothermally, Na 2 Cd 3 (Mo 2 O 4 OH) 6 ‐(PO 4 ) 2 (PO 3 OH) 6 [N(CH 3 ) 4 ] 4 ·10H 2 0 ( 1 ) and Cd 9 (Mo 2 O 4 OH) 12 (PO 4 ) 6 (PO 3 OH) 10 ‐[N(CH 3 ) 4 ] 8 ·15H 2 O ( 2 ). Their structures have been determined from single‐crystal X‐ray diffraction. The water molecules and hydroxyl groups have been deduced from valence calculations. Both compounds crystallize in the triclinic space group P 1 , with the cell parameters for 1 a = 12.340(2), b = 12.596(1), c = 14.717(2) Å, α = 107.24(1)°, β = 89.83(1)°, γ = 114.31(1)°, V = 1972.3(4) Å 3 , and for 2 a = 11.942(1), b = 13.339(2), c = 26.765(3) Å, α = 85.33(1)°, β = 86.87(1)°, γ = 64.08(1)°, V = 3821.3(9) Å 3 . The two frameworks can be described on the basis of similar [Mo 6 P 4 X 31 ] n‐ (X = O, OH) anionic clusters, but 1 is a tridimensional structure, whereas 2 exhibits a monodimensional structure.