Journalartikel

Jahr der Veröffentlichung: 1996

Seiten: 473-478

Zeitschrift: Journal of Inorganic and General Chemistry

Bandnummer: 622

Heftnummer: 3

ISSN: 0044-2313

DOI Link: https://doi.org/10.1002/zaac.19966220315

Verlag: Wiley

Abstract: 
The reactions of Te2Er with MoOBr3, TeCl4 with MoNCl2/MoOCl3, and Te with WBr5/WOBr3 yield black, needle-like crystals of [Te(15)X(4)][MOX(4)](2) (M = Mo, W; X = Cl, Br). The crystal structure determinations ([Te15Br4][MoOBr4](2): monoclinic, Z = 1, C2/m, a = 1595.9(4) pm, b = 403.6(1) pm, c = 1600.4(4) pm, beta = 112.02(2)degrees; [Te15Cl4][MoOCl4](2): C2/m, a = 1535.3(5) pm, b = 402.8(2) pm, c = 1569.6(5) pm, beta = 112.02(2)degrees; [Te15Br4][WOBr4](2): C2, a = 1592.4(4) pm, b = 397.5(1) pm, c = 1593.4(5) pm, beta = 111.76(2)degrees show that all three compounds are isotypic and consist of one-dimensional ([Te(15)X(4)](2+))(n) and ([MOX(4)](-))(n) strands. The structures of the cationic strands are closely related to the tellurium subhalides Te(2)X (X = Br, I). One of the two rows of halogen atoms that bridges the band of condensed Te-6 rings is stripped off, and additionally one Te position has only 75% occupancy which leads to the formula ([Te(15)X(4)](2+))(n) (X = Cl, Br) for the cation. The anionic substructures consist of tetrahalogeno-oxometalate ions [MOX(4)](-) that are linked by linear oxygen bridges to polymeric strands. The compounds are paramagnetic with one unpaired electron per metal atom indicating oxidation state M(V), and are weak semiconductors.

Harvard-Zitierstil: Beck, J., Pell, M., Richter, J. and Ibers, J. (1996) Modified tellurium subhalides in the new structure type [Te(15)X(4)](n)[MOX(4)](2n) (M=Mo,W; X=Cl,Br), Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry, 622(3), pp. 473-478. https://doi.org/10.1002/zaac.19966220315

APA-Zitierstil: Beck, J., Pell, M., Richter, J., & Ibers, J. (1996). Modified tellurium subhalides in the new structure type [Te(15)X(4)](n)[MOX(4)](2n) (M=Mo,W; X=Cl,Br). Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry. 622(3), 473-478. https://doi.org/10.1002/zaac.19966220315