TY - JOUR
T1 - Hydrothermal Synthesis and Structural Characterization of Two Layered Mixed-Valence Vanadyl Phosphate Hydrates Na0.50VOPO4·2.0H2O and K0.50VOPO4·1.5H2O
AU - Wang, S. L.
AU - Kang, H. Y.
AU - Cheng, C. Y.
AU - Lii, K. H.
PY - 1991/9/1
Y1 - 1991/9/1
N2 - The single crystals of two mixed-valence vanadium phosphates A0.50VOPO4·xH2O (A = Na, x = 2.0; A = K, x = 1.5) were grown hydrothermally. Their structures were characterized by single-crystal X-ray diffraction and thermogravimetric analysis. For Na0.50VOPO4·,2.0H2O, triclinic, [formula omited], a = 6.2851 (7) Å, b = 6.284 (1) Å, c = 13.262 (2) Å, α = 80.30 (1)°, β = 87.434 (9)°, γ = 89.94 (1)°, V = 515.7 (1) Å3, Z = 4, and R = 0.0351, Rw = 0.0480 for 2413 unique reflections. For K0.50VOPO4·1.5H2O, triclinic, [formula omited], a = 6.282 (2) Å, b = 6.285 (1) Å, c = 6.679 (2) Å, α = 89.11 (2)°, β = 72.84 (2)°, γ = 89.98 (2)°, V = 251.9 (1) Å3, Z = 2, and R = 0.0309, Rw = 0.0369 for 1030 unique reflections. Both structures contain layers of distorted vanadium octahedra and phosphate tetrahedra with the water molecules and alkali-metal cations between the layers. The layer is a 4-connected net in which corner-sharing vanadium and phosphorus polyhedra alternate. These two structures are discussed along with the parent VOPO4·2H2O.
AB - The single crystals of two mixed-valence vanadium phosphates A0.50VOPO4·xH2O (A = Na, x = 2.0; A = K, x = 1.5) were grown hydrothermally. Their structures were characterized by single-crystal X-ray diffraction and thermogravimetric analysis. For Na0.50VOPO4·,2.0H2O, triclinic, [formula omited], a = 6.2851 (7) Å, b = 6.284 (1) Å, c = 13.262 (2) Å, α = 80.30 (1)°, β = 87.434 (9)°, γ = 89.94 (1)°, V = 515.7 (1) Å3, Z = 4, and R = 0.0351, Rw = 0.0480 for 2413 unique reflections. For K0.50VOPO4·1.5H2O, triclinic, [formula omited], a = 6.282 (2) Å, b = 6.285 (1) Å, c = 6.679 (2) Å, α = 89.11 (2)°, β = 72.84 (2)°, γ = 89.98 (2)°, V = 251.9 (1) Å3, Z = 2, and R = 0.0309, Rw = 0.0369 for 1030 unique reflections. Both structures contain layers of distorted vanadium octahedra and phosphate tetrahedra with the water molecules and alkali-metal cations between the layers. The layer is a 4-connected net in which corner-sharing vanadium and phosphorus polyhedra alternate. These two structures are discussed along with the parent VOPO4·2H2O.
UR - http://www.scopus.com/inward/record.url?scp=33751499433&partnerID=8YFLogxK
U2 - 10.1021/ic00018a020
DO - 10.1021/ic00018a020
M3 - 期刊論文
AN - SCOPUS:33751499433
VL - 30
SP - 3496
EP - 3499
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 18
ER -