A novel Mo-doped compound with graphite-like structure: [H3O](2)V3O8

The hydrothermal reaction of Na2MoO4 . 2H(2)O, V2O5 and en in water gave ri se to a graphite-shaped vanadate [H3O](2)V3O8 1, which is doped with molybd enum. Compound 1 crystallizes in tetragonal system, space group P4bm, H6O10 V2.9Mo0.1, M-r = 323.37, a = 8.904(1), c = 5.573(1)Angstrom, V = 441.8(1)An gstrom (3), Z = 2, D-c = 2.431 g.cm(-3), mu = 3.137 mm(-1), F(000) = 314, t he final R = 0.0477, wR = 0.0993 for 260 observed reflections. Its two-dime nsional framework is built up by corner-shared ((VO4)-O-V) tetrahedra and ( (VO5)-O-IV) square pyramids with all of the terminal oxygen atoms toward th e same orientation and further connected inta three-dimensional framework t hrough hydrogen bonding between the protoned water molecules.