
TY  - JOUR
A1  - Anderson, IR 
A1  - Sheldon, JC 
T1  - Three new staphylonuclear chloromolybdates : K<sub>6</sub>Mo<sub>3</sub>Cl<sub>12</sub>, (NH<sub>4</sub>)<sub>7</sub>Mo<sub>3</sub>Cl<sub>13</sub>,H<sub>2</sub>O, and Cs<sub>6</sub>Mo<sub>4</sub>Cl<sub>16</sub>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1965
VL  - 18
IS  - 3
SP  - 271
EP  - 276
KW  - 
UR  - https://doi.org/10.1071/CH9650271 
N2  - The new compounds, K6Mo3IICl12; (NH4)7Mo3IICl13.H2O; and Cs6Mo4Cl16 (containing molybdenum in oxidation state +2.5) have been precipitated by the appropriate cation from solutions of molybdenum(II) acetate in 12M hydrochloric acid. The absorption spectra of potassium and ammonium salts are similar in the solid state and solution. Since the compounds are strong reducing agents and short-lived in solution, their formulation as a staphylonuclear (i.e. metal-clustered) trimer or tetramer rests on their diamagnetism, stoicheiometry, and spectral similarities.   It is proposed that the chloromolybdates adopt entirely novel, compact polymers by stacking the chlorine atoms into &quot;close packed&quot; layers. The Mo3Cl13 group consists of two layers of chlorine atoms (seven and six) generating three octahedral locations for the molybdenum atoms at the corners of a regular triangle. The Mo3Cl12 group is similar but deficient in one chlorine atom. The Mo4Cl16 group is related to Mo3Cl13 and consists of three layers of chlorine atoms (seven, six, and three) providing four octahedral locations for the molybdenum atoms at the corners of a tetrahedron. 
ER  -

