249602-99-1Relevant academic research and scientific papers
Synthesis and characterization of d2-molybdenum imido complexes containing coordinated dithio-ligands. MO rationalization of the preferential isomer formation of Mo(N-2,4,6-Me3C6H2)(S 2COMe)Cl(PMe3)2
Montilla, Francisco,Pastor, Antonio,Galindo, Agustin
, p. 127 - 131 (1999)
Treatment of the complex Mo(Nmes)Cl2(PMe3)3 (1) (mes=2,4,6-Me3C6H2, 2,4,6-trimethylphenyl) with two equivalents of the potassium salt of methyl xanthate, KS2COMe, or the potassium 1-pyrrole-carbodithioate, KS2C(NC4H4), gave Mo(Nmes)(S-S)2(PMe3) (S-S=S2COMe 2; S2C(NC4H4) 3). When the reaction of 1 with KS2COMe is carried out in a 1:1 stoichiometry, the complex Mo(Nmes)(S2COMe)Cl(PMe3)2 (4) is obtained. The chlorine atom in 4 occupies the trans position with respect to the organoimido ligand. MO calculations of the EH type rationalize the preferential formation of 4 as the thermodynamically preferred isomer in this metathesis reaction. The reaction of 4 with CO produces Mo(Nmes)(S2COMe)Cl(CO)(PMe3) (5). Reaction of 1 with carbon disulfide yields the complex Mo(Nmes)Cl2(S2CPMe3) (6), containing a trihapto-(S,S′,C) phosphoniumdithiocarboxylate ligand.
