Abstract
H2Co2P4O14 crystals were synthesized by a hydrothermal technique. They crystallized in a monoclinic system with cell parameters a = 9.1609(7)Å, b = 12.6764(8)Å, c = 9.6868(10)Å and β = 106.771(7)°. An open framework structure having tunnel-type cavities is observed.