Transition
metal oxide clusters provide attractive building blocks
for synthesizing new materials with interesting structural, electronic,
and magnetic properties. An interesting framework structure material
[CdII
3(H2O)12VIV
16VV
2O36(OH)6(AO4)]·24H2O (A = V, S), 1, composed of three-dimensional arrays of vanadium oxide
nanoclusters {V18O42(AO4)} interconnected
by {-O–Cd–O-} bridging groups, has been prepared and
characterized. Compound 1, whose structure is resolved
at the atomic level by single crystal X-ray structure analysis, exhibits
properties suitable for gas sensing applications. Sensor devices fabricated
from 1 show promising sensing properties for detecting
environmentally detrimental {NO
x
} (NO
and NO2) gases with good sensitivity and reversibility.
This is a rare example of a polyoxometalate-based material showing
room temperature NO
x
sensing properties.
Decavanadate with a Novel Coordination Complex: Synthesis and Characterization of (NH4)2[Ni(H2O)5(NH3)]2(V10O28)·4H2O. -The title compound is prepared by reaction of NH4VO3 and NiCl2 in aqueous solution (80°C, 5 h; 66% yield). (NH4)2[Ni(H2O)5(NH3)]2[V10O28]·4H2O contains a [V10O28] 6anionic cluster and a novel complex cation [Ni(H2O)5(NH3)] 2+ , which is confirmed by single crystal XRD (triclinic, space group P1, Z = 1), FTIR spectroscopy, and thermogravimetric analysis. The formation of the novel complex species [Ni(H2O)5(NH3)] 2+ during the synthesis is discussed in terms of ligand substitution involving [Ni(H2O)6] 2+ . -(PUTREVU, N. R.; DOEDENS, R. J.; KHAN*, M. I.; Inorg. Chem. Commun. 38 (2013) 5-7, http://dx.
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