Revised space groups for three molybdenum(V) phosphate compounds

The space groups of three previously described Mo(V) phosphate structures a re revised, (1) delta -KMo2P3O13, originally re ported as triclinic, P (1) over bar, is revised to monoclinic, C2/c; it is identical to the compound p reviously identified as K4Mo8P12O52 (2) The compound formulated as [Mo12CdP 8O50(OH)(12)] Cd [N(CH3)(4)](2)(H3O)(6). 5H(2)O, originally described as mo noclinic, Pn, is revised to P2(1)/n (also monoclinic). (3) Rb3O2(MoO)(4)(PO 4)(4), originally reported as orthorhombic, C222(1), is revised to tetragon al, P4(3)2(1)2, The general descriptions of the structures are unchanged; h owever, for compound 2 the revision involves the addition of a center of sy mmetry and, as a result, there are significant changes in the interatomic d istances and angles. (C) 2001 Academic Press.