A three-dimensional organic–inorganic composite material constructed from copper–triazolate networks linked through vanadium oxide chains: [{Cu 3 (trz) 2 }V 4 O 12 ]

The hydrothermal reaction of a mixture of V2O5, 1,2,4-triazole (trz), Cu(NO3)2·2.5H2O and H2O yields [{Cu3(trz)2}V4O12], a material constructed from one-dimensional {V4O12}n4n– chains linked to undulating {Cu3(trz)2}n4n+ networks.