Hydrothermal syntheses, structures, and properties of two new potassium vanadium phosphates: K[sub 3](VO)(V[sub 2]O[sub 3])(PO[sub 4])[sub 2](HPO[sub 4]) and K[sub 3](VO)(HV[sub 2]O[sub 3])(PO[sub 4])[sub 2](HPO[sub 4])

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1006/jssc.1994.1173· OSTI ID:6654296

Vaughey, J T; Harrison, T A; Jacobson, A J ^[1]

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1. Univ. of Houston, TX (United States)

Two new potassium vanadium phosphates have been prepared and their structures have been determined from analysis of single crystal X-ray data. The two compounds, K[sub 3](VO)(V[sub 2]O[sub 3])(PO[sub 4])[sub 2](HPO[sub 4]) and K[sub 3](VO)(HV[sub 2]O[sub 3])(PO[sub 4])[sub 2](HPO[sub 4]), are isostructural, except for the incorporation of an extra hydrogen atom into the nearly identical frameworks. The structures consist of a three-dimensional network of [VO][sub n] chains connected through phosphate groups to a [V[sub 2]O[sub 3]] moiety. Magnetic susceptibility experiments indicate that in the case of the di-hydrogen compound, there are no significant magnetic interactions between the three independent vanadium (IV) centers. Crystal data: for K[sub 3](VO)(V[sub 2]O[sub 3])(PO[sub 4])[sub 2] (HPO[sub 4]), M[sub r] = 620.02, orthorhombic space group Pnma (No. 62), a = 7.023(4) [angstrom], b = 13.309(7) [angstrom], c = 14.294(7) [angstrom], V = 1336(2) [angstrom][sup 3], Z = 4, R = 5.02%, and R[sub w] = 5.24% for 1238 observed reflections [I > 3[sigma](I)]; for K[sub 3](VO)(HV[sub 2]O[sub 3])(PO[sub 4])[sub 2](HPO[sub 4]), M[sub r] = 621.04, orthorhombic space group Pnma (No. 62), a = 6.975(3) [angstrom], b = 13.559(7) [angstrom], c = 14.130(7) [angstrom], V = 1336(1) [angstrom][sup 3], Z = 4, R = 6.02%, and R[sub w] = 6.34% for 1465 observed reflections [I > 3[sigma](I)].

• OSTI ID: 6654296
• Journal Information: Journal of Solid State Chemistry; (United States), Vol. 110:2; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PHOSPHATES
CRYSTAL STRUCTURE
POTASSIUM COMPOUNDS
VANADIUM COMPOUNDS
HYDROTHERMAL SYNTHESIS
MAGNETIC SUSCEPTIBILITY
ORTHORHOMBIC LATTICES
X-RAY DIFFRACTION
ALKALI METAL COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
DIFFRACTION
MAGNETIC PROPERTIES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
360602* - Other Materials- Structure & Phase Studies
360606 - Other Materials- Physical Properties- (1992-)