Molybdenum (VI) oxide tetrachloride

Crystal structure
__ Mo 6+      __ Cl -      __ O 2−
General
Surname	Molybdenum (VI) oxide tetrachloride
other names	Molybdenum chloride oxide Molybdenum oxychloride Molybdenum oxytetrachloride Molybdenum tetrachloride monoxide Molybdenum (VI) oxychloride Tetrachlorooxomolybdenum
Ratio formula	MoOCl 4
Brief description	green solid
External identifiers / databases
CAS number 13814-75-0 EC number 628-149-2 ECHA InfoCard 100.156.445 PubChem 4084870 ChemSpider 19060258 Wikidata Q4332906
properties
Molar mass	253.75 g mol −1
Physical state	firmly
Melting point	100 ° C
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 314 P: 280-305 + 351 + 338-310
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Molybdenum (VI) oxide tetrachloride is an inorganic chemical compound of molybdenum from the group of oxide chlorides .

Extraction and presentation

Molybdenum (VI) oxide tetrachloride can be obtained by reacting molybdenum (VI) oxide with thionyl chloride .

${\displaystyle \mathrm {MoO_{3}+2\ SOCl_{2}\longrightarrow MoOCl_{4}+2\ SO_{2}} }$

An alternative representation is the reaction of molybdenum (V) chloride with oxygen at 215 to 220 ° C:

${\displaystyle {\ce {2 MoCl5 + 2 O2 ->[T][]2 MoOCl4 + O2 + Cl2}}}$

properties

Molybdenum (VI) oxide tetrachloride is a dark green, diamagnetic , extremely moisture- and light-sensitive solid. It reacts with chlorobenzene to form molybdenum (V) oxide trichloride . Under nitrogen, it evaporates at 102 ° C to a brown vapor. It has a tetragonal crystal structure of the WOCl ₄ type.

use

Molybdenum (VI) oxide tetrachloride is used as the basis for catalysts for the polymerization of substituted acetylenes .

Individual evidence

1. ↑ ^{a b c d e} data sheet Molybdenum (VI) tetrachloride oxide, 97% from Sigma-Aldrich , accessed on July 6, 2013 ( PDF ).
2. ↑ ^{a b c} Alan K. Mallock: Molybdenum (VI) oxide chloride . In: Earl L. Muetterties (Ed.): Inorganic Syntheses . tape 10 . McGraw-Hill Book Company, Inc., 1967, p. 52-57 (English).
3. ↑ ^{a b} Georg Brauer (Ed.) U. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume III, Ferdinand Enke, Stuttgart 1981, ISBN 3-432-87823-0 , p. 1539.