Molybdenum tetrachloride
Encyclopedia
Molybdenum tetrachloride is the inorganic compound
with the empirical formula MoCl4. The material exists as two polymorphs, a polymeric ("α") and a hexameric ("β") structures, although neither form is soluble in any solvent without degradation. In each polymorph, the Mo center is octahedral with two terminal chloride ligands and four doubly bridging ligands.
It can be prepared from by dechlorination of molybdenum pentachloride using tetrachloroethene:
The acetonitrile
adduct, which is a versatile intermediate, can be prepared directly from the pentachloride:
The MeCN ligand
s can be exchanged with other ligands:
Inorganic compound
Inorganic compounds have traditionally been considered to be of inanimate, non-biological origin. In contrast, organic compounds have an explicit biological origin. However, over the past century, the classification of inorganic vs organic compounds has become less important to scientists,...
with the empirical formula MoCl4. The material exists as two polymorphs, a polymeric ("α") and a hexameric ("β") structures, although neither form is soluble in any solvent without degradation. In each polymorph, the Mo center is octahedral with two terminal chloride ligands and four doubly bridging ligands.
It can be prepared from by dechlorination of molybdenum pentachloride using tetrachloroethene:
- 2 MoCl5 + C2Cl4 → 2 MoCl4 + C2Cl6HexachloroethaneHexachloroethane, also known as perchloroethanes , C2Cl6, is a colorless solid at room temperature which is used by the US Military in smoke compositions, e.g...
The acetonitrile
Acetonitrile
Acetonitrile is the chemical compound with formula . This colourless liquid is the simplest organic nitrile. It is produced mainly as a byproduct of acrylonitrile manufacture...
adduct, which is a versatile intermediate, can be prepared directly from the pentachloride:
- 2 MoCl5 + 5 CH3CN → 2 MoCl4(CH3CN)2 + ClCH2CN + HCl
The MeCN ligand
Ligand
In coordination chemistry, a ligand is an ion or molecule that binds to a central metal atom to form a coordination complex. The bonding between metal and ligand generally involves formal donation of one or more of the ligand's electron pairs. The nature of metal-ligand bonding can range from...
s can be exchanged with other ligands:
- MoCl4(CH3CN)2 + 2 THFThFFollicular B helper T cells , are antigen-experienced CD4+ T cells found in the B cell follicles of secondary lymphoid organs such as lymph nodes, spleens and Peyer's patches, and are identified by their constitutive expression of the B cell follicle homing receptor CXCR5...
→ MoCl4(THF)2 + 2 CH3CN