Structural comparison of iron tetrapolyvanadate Fe2V4O13 and iron polyvanadomolybdate Fe2V3.16Mo0.84O13.42:: A new substitution mechanism of molybdenum(VI) for vanadium(V)

被引：21

作者：

Wang, XD ^{[1
]}

Heier, KR ^{[1
]}

Stern, CL ^{[1
]}

Poeppelmeier, KR ^{[1
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

INORGANIC CHEMISTRY | 1998年 / 37卷 / 26期

关键词：

D O I：

10.1021/ic980942t

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Single crystals of the iron tetrapolyvanadate Fe2V4O13 and the iron polyvanadomolybdate Fe2V3.16Mo0.84O13.42 were grown from Fe2O3/V2O5 and Fe2O3/V2O5/MoO3 melts, respectively. Single-crystal X-ray diffraction revealed that the two structures are closely related. Both contained isolated Fe2O10 octahedral dimers with similar orientations. The unusual U-shaped V4O136- clusters in Fe2V4O13 were ordered while the U-shaped [V3.16Mo0.84O13.42](6-) clusters in Fe2V3.16Mo0.84O13.42 were disordered. The substitution of molybdenum(VI) for vanadium(V) revealed a new substitution mechanism, in which a corresponding stoichiometric amount of oxygen was brought into the structure for charge balance with no reduction of the V5+ and Mo6+ ions. Crystal data: for Fe2V4O13, monoclinic, space group P2(1)/c (No. 14), with a = 8.300(2) Angstrom, b = 9.404(6) Angstrom, c = 14.560(2) Angstrom, beta = 102.08(1)degrees, and Z = 4; for Fe2V3.16Mo0.84O13.42, monoclinic, space group P2(1)/c (No. 14), with a = 7.678(1) Angstrom, b = 9.456(2) Angstrom, c = 8.336(2) Angstrom, beta = 109.50(2)degrees and Z = 2.

引用

页码：6921 / 6927

页数：7

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