A C-2-symmetric antimonato polyoxovanadate cluster [V16Sb4O42(H2O)](8-) derived from the {V18O42} archetype

作者：Antonova Elena; Naether Christian; Koegerler Paul; Bensch Wolfgang^*

来源：Dalton Transactions, 2012, 41(23): 6957-6962.

DOI：10.1039/c2dt30319a

The new antimonato polyoxovanadate [(V16Sb4O42)-Sb-IV-O-III(H2O)](8-) cluster (1a) is the main structural motif of the solvothermally obtained compound {(trenH(2))Zn(tren)}(2)[V16Sb4O42(H2O)]center dot xH(2)O (x = 6-10) (1) (tren = tris(2-aminoethyl)amine). The C-2-symmetric cluster structure is closely related to the {V18O42} archetype. 1 crystallizes in the monoclinic space group C2/c with a = 30.7070(19) angstrom, b = 13.9512(5) angstrom, c = 23.1435(14) angstrom, beta = 128.076(6)degrees, and V = 7804.8(7) angstrom(3). The orientation of the [(Sb2O5)-O-III](4-) groups in each cluster leads to intermolecular Sb center dot center dot center dot O contacts and the formation of channels between the clusters. [Zn(tren)(trenH2)] complexes with trigonal bipyramidal coordination environments are located between the [V16Sb4O42(H2O)](8-) anions, and form a three dimensional network with them via strong N-H center dot center dot center dot O hydrogen bonds. Up to 250 degrees C crystal water molecules are emitted, which are reversibly incorporated in humid air.

• 出版日期2012