C. Diaz et C. Leal, CIS-TRANS ISOMERIC INFLUENCE ON THE REACTIVITY OF BRMN(CO)(2)DPPMP(OPH)(3) TOWARDS DIALKYLTHIOETHERS, Polyhedron, 14(3), 1995, pp. 425-428
Trans-[BrMn(CO)(2)(dppm)P(OPh)(3)] reacts with SR(2); R = C2H5 and C3H
7 to give the cationic complexes trans-[Mn(CO)(2)(dppm)P(OPh)(3)(SR(2)
)]PF6 while from the reaction of cis,cis [BrMn(CO)(2)(dppm)P(OPh)(3)]
with the thioether ligands the unaltered dicarbonyl manganese complex
was isolated. The new cationic complexes were characterized by element
al analysis, IR, H-1-NMR, P-31-NMR and UV-visible spectroscopic method
s. The different reactivity between the cis and trans isomers is discu
ssed in terms of Mn-Br bond strength and steric factors.