Author(s)

Hisham A. Abo-Eldahab^1,2

¹Chemistry Department, Faculty of Science, Alexandria, Egypt.
²Umm Al-Qura University, University College, Makkah, KSA.

Reaction of bis-(acetylacetonato) copper(ΙΙ) (A) with transmetalator Zn((EtO)₂PS₂)₂ (B₂; Et = ethyl) in methylene chloride is a simple irreversible second-order process over a wide temperature range which is the first example of a second-order reaction of mononuclear target A with a transmetalator. The plots of k_obsd vs [A] are linear, meaning that there is one A and one B₂ in the activated complex of the slowest reaction step. The slowest step is precursor formation on the basis that B₂ is an exceptionally weak complex. The product of the A/B₂ reaction is the strong successor complex Zn(acac)₂•Cu(ps)₂. The data are compared with those for reactions of the same target (A) with S-methyle isopropylidenehydrazinecarbodithioate-carbodithioato-metal(II) complexes M(SN)₂ (M=Ni (C₁) and Zn (C₂)). The reaction is not like that of A with Ni ((MeO)₂PS₂)₂ (B₁; Me=methyl), because it is irreversible and also consistent with the measured lower relative thermodynamic stability of B₂ compared to B₁.

Kinetics, Mechanism, Transmetalation, Transmetallators, Thermodynamics

Abo-Eldahab, H. (2015) Products and Kinetics of the Reaction of Monomeric Target Bis-(Acetylacetonato) Copper(II) with Transmetalator Bis-(Diethoxydithiophosphato) Zinc(II) in Methylene Chloride. Open Journal of Physical Chemistry, 5, 39-48. doi: 10.4236/ojpc.2015.52005.