Dichlormolybdic acids

Molybdenum tetrachloride forms a semi-crystalline deliquescent powder, unstable in air, in which, if heated, it aelds the oxychloride MoOaCl and dichlormolybdic acid M0O3.2HCI it is also stated to be converted spontaneously into the pentachloride and trichloride. If sufficiently heated—though below 1380° C.—it is reduced to the metal. In water, alcohol, ether, and in dilute sulphuric acid it gives unstable solutions. 

Chlormolybdic" Acids.—The compound MoOCl2(OH)2, molybdenum hydroxychloride or dichlormolybdic add, is readily obtained by passing hydrogen chloride over any heated oxygenated compound of molybdenum. Fine white unstable needles are obtained, the aqueous solution of which deposits on evaporation amorphous molybdic anhydride. The substance is also soluble in ether, with which it forms a crystalline compound. An alternative method of preparation of dichlormolybdic acid consists in cooling a solution of molybdic acid saturated with hydrochloric acid. ... 

---

See also in sourсe #XX -- [ , ]

---