Home Two organically-templated vanadium arsenate phases: V4As6O30H6 · 2 N2C6H14 · 4 H2O and V4As6O30H8 · 2 N(CH3)4 · 5.33 H2O
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Two organically-templated vanadium arsenate phases: V4As6O30H6 · 2 N2C6H14 · 4 H2O and V4As6O30H8 · 2 N(CH3)4 · 5.33 H2O

Published/Copyright: July 28, 2010

Abstract

Two organically templated vanadium arsenate phases have been synthesized and characterized by single X-ray diffraction and thermogravimetric analyses. Both are comprised of clusters of vanadium arsenate anions that are held together by hydrogen bonding with the included species.

The V4As6O30H6 · 2 N2C6H14 · 4 H2O [VAs-Dab] (Mr = 1439.76) crystal is monoclinic, space group P21/c (No. 14), with a = 9.247(3) Å, b = 13.932(3) Å, c = 16.105(8) Å, β = 106.31(4)°, V = 1991.26 Å3 and Z = 2. Final residuals of R = 3.71% and Rw = 4.17% were obtained for 3044 observed reflections with I > 3σ(I). The crystalline compounds is comprised of clusters H-bonded to the organic and water molecules.

The V4As6O30H8 · 2 N(CH3)4 · 5.33 H2O [VAs-TMA](Mr = 346.43) crystal is orthorhombic, space group Cmca (No. 64), with a = 18.742(5) Å, b = 12.208(3) Å, c = 17.689(6) Å, V = 4047.24 Å3 and Z = 16. Final residuals of R = 3.89% and Rw = 4.13% were obtained for 1756 observed reflections with I > 3σ(I). The crystalline compound contains one dimensional channels, surrounded by the H-bonded clusters, containing the water molecules and tetramethyl ammonium cations.

Published Online: 2010-7-28
Published in Print: 1994-11-1

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