Synthesis, Infrared Spectroscopy and Crystal Structure Determination of a New Decavanadate

Synthesis, infrared spectroscopy and crystal structure of a new potassium decavanadate decahydrate, K 6 [V 10 O 28 ]·10H 2 O, has been reported. The infrared spectrum is dominated by decavanadate polyanion and water bands. The X-ray crystallography analysis found the compound crystallizes in a triclinic system with the parameters a = 10.5334 (4) Å, b = 10.6600 (4) Å, c = 17.7351 (5) Å; α = 76.940 (2)°, β = 75.836 (2)°, γ = 64.776 (2)°; V = 1,729.86 (11) Å 3 ; Z = 2, space group . The polyanion consists of ten [VO 6 ] octahedra sharing edges, in which the V–O distances are in good agreement with those reported for other decavanadates. The crystal structure is stabilized by potassium cations and water molecules forming a complex pattern of hydrogen bonding and short contact ionic interactions. Graphical Abstract Synthesis, infrared spectroscopy and crystal structure of a new potassium decavanadate decahydrate, K 6 [V 10 O 28 ]·10H 2 O are described. The infrared spectrum is dominated by decavanadate polyanion and water bands. The crystal structure shows a complex pattern composed by hydrogen bonds and short contacts between potassium cations and water molecules.