83115-28-0Relevant academic research and scientific papers
13C NMR spectra of some new iridium(I) complexes: Evidence for reductive character in H2 addition and the cis and trans influences of nitriles
Crabtree, Robert H.,Morehouse, Sheila M.
, p. 4210 - 4213 (2008/10/08)
Syntheses of the new complexes [Ir(cod)(PPh3)(RCN)]A and [IrH2(cod)(PPh3)(RCN)]A (cod = 1,5-cyclooctadiene; A = BF4; R = Me, p-MeOC6H4, C6H5, p-CH3COC6H4, and p-NO2C6H4) are reported. 13C NMR spectroscopy suggests the addition of H2 takes place with an increase, rather than the more usual decrease, of electron density at the metal. The data also reveal the presence of cis and trans influences of R on the cod δ(C(vinyl)), which are in the same direction, the trans being ca. 3.5 times greater than the cis influence.
