
TY  - JOUR
A1  - Howlader, NC 
A1  - Haight, Jr GP 
A1  - Hambley, TW 
A1  - Lawrance, GA 
A1  - Rahmoeller, KM 
A1  - Snow, MR 
T1  - Structure and redox properties of the molybdenum(IV) metal cluster K<sub>5</sub>[Mo<sub>3</sub>S<sub>4</sub>(CN)<sub>9</sub>].7H<sub>2</sub>O
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1983
VL  - 36
IS  - 2
SP  - 377
EP  - 383
KW  - 
UR  - https://doi.org/10.1071/CH9830377 
N2  - The anionic molybdenum(IV) cluster [Mo3S4(CN)9]5- has been subjected to X-ray crystal structure analysis. The potassium salt crystallized in the triclinic space group P1, a 10.634(1), b 11.888(3), c 24.892(2) Å, &#945; 89.56(2), &#946; 79.86(1), &#947; 76.53(2)º, Z 4. The three MoIV atoms in each unit of approximately CSL3v symmetry are situated at the corners of an equilateral triangle with Mo-Mo distance 2.765(7) Å. There are three S2- ligands bridging between pairs of Mo atoms, and a unique S2- ligand located uniformly above the plane of the equilateral triangle. Distorted octahedral coordination of each MoIV is completed by three CN- ligands to each of the three metal centres. The ion is structurally similar to the [MO3S(S2)6]2- precursor, and to [Mo3O4X9]n- analogues. In dimethyl sulfoxide, the cluster is irreversibly reduced in a single step near -2 V (v. saturated calomel electrode), but exhibits a quasi-reversible oxidation at + 0.51 V. On the coulometric time scale, the complex is irreversibly oxidized to MoV monomer. 
ER  -

