112426-12-7Relevant academic research and scientific papers
Synthetic and Mechanistic Studies of the Addition of 4-Chloroaniline to Tricarbonyl (1-5-η-dienyl)iron(II) cations (dienyl= C6H7, 2-MeOC6H6 or C7H9)
Odiaka, Timothy I.
, p. 227 - 236 (1987)
A kinetic study of the reactions between the organometallic complexes BF4 (1, dienyl= C6H7, 2-MeOC6H6 or C7H9) and 4-chloroaniline in CH3CN reveal the general two-term expression kobs= ka+kb, which is consistent with an equilibrium process.The observed rate sequence C6H7>2-MeOC6H6>C7H9 and the low ΔHa and large negative ΔSa values are in accordance with direct addition to the dienyl rings of 1.On the other hand, the much higher ΔHb values are consistent with bond cleavage in dissociation.The values ΔSb are negative, indicating the presence of an ordered transition state through which the starting dienyl complexes are reformed via some internal SN2 process.
