A Reaction Cycle for Octahedral Tungsten Iodide Clusters

作者：Stroebele Markus; Meyer Hans Juergen^*

来源：Inorganic Chemistry, 2017, 56(10): 5880-5884.

DOI：10.1021/acs.inorgchem.7b00537

A reaction cycle is shown for octahedral tungsten iodide compounds. The thermal transformation of W6I16 (W(6)I(12)2I(2)) via release of iodine proceeds via the new W6I13 (W(6)I(12)xI(2) with 0 < x <= 1/2) to yield a new modification of W6I12, denoted as alpha-W6I12. When heated, alpha-W6I12 is converted into the known (beta-)W6I12. The reaction of (beta-)W6I12 with I-2 leads to the formation of the starting compound W6I16. The new compounds W6I13 (W(6)I(12)x I2 with 0 < x <= 1/2) and alpha-W6I12 are structurally characterized by powder and single-crystal X-ray diffraction techniques. The thermal decomposition of W6I16 and the monotropic phase transition of alpha-W6I12 into beta-W6I12 are examined by differential scanning calorimetry measurements.

• 出版日期2017-5-15