Trimesitylvanadium

The fact that trimesitylvanadium is recrystallized with THF adduct is due to the strong interaction between vanadium and oxygen.

[4] According to Pyykkö's atomic radii periodic trend, 1.97 Å would be expected for a single bond between vanadium and oxygen.

Experiments found that THF in trimesitylvanadium was exchanged with either pyridine or 2,2'-bipyridine when the product was exposed to either chemical.

Since V(Mes)3THF is air- and water-sensitive, when the product from the insertion of tBuCN is exposed to water and/or O2, it undergoes reductive elimination to form imine and amine.

[8][9][10] In vanadium(III) species, V(Mes)3(THF) undergoes deoxygenation of styrene oxide.

This unique compound has a magnetic moment of 1.65 μB per vanadium at 288 K and a V-O-V stretch vibration of 680 cm−1.

This reaction was also observed with K metal, resulting in the product with a magnetic moment of 1.83 μB per vanadium atom at 293 K. Trimesitylvanadium is a precursor for organometallic fragments in hexagonally packed mesoporous silica (HMS) as a hydrogen storage source.

Crystal structure of V(Mes) 3 THF
Using CO results reductive elimination of mesityl group, and this is an example of activation reaction of CO. [ 3 ]
Insertion reaction of CO 2 makes two oxygen atoms binds vanadium in bidentate fashion while carbon atom is functionalized by mesityl group. [ 3 ]
This reaction scheme represents insertion reaction of pivalonitrile with trimesitylvanadium, followed by isolation of imine and amine with exposure of H 2 O and/or O 2 . [ 3 ]
Deoxygenation of styrene oxide with trimesitylvanadium results in styrene and vanadyl(V) complex. [ 11 ]
Formation of bridging complex with presence of both vanadyl(V) complex and trimesitylvanadium, followed by decomposition after introducing pyridine. [ 11 ]
Reductive cleavage of NO bond by trimesityvanadium. R = i -Pr. [ 6 ] [ 12 ]
N 2 binding reaction with trimesitylvanadium. [ 6 ] [ 13 ] N 2 binding reaction can be also done with K metal as reductant.