Abstract
The kinetics of the replacement of Cl from [Pt(PR3)(en)Cl]+(R = Me, Et, Bun, or OCH3; en = 1,2-diaminoethane) by a range of nucleophiles (H2O, Br–, N3–, I–, or SCN–) have been studied in water at 26.5 °C. Good linear relationships are observed between log k20(k20 is the nucleophile dependent second-order rate constant, extrapolated to I= 0 mol dm–3) and the index of nucleophilicity, relative to the standard +1 cationic substrate, [Pt(NH3)(en)Cl]+. The nucleophilic discrimination is similar to that of the dimethyl sulphoxide complex but the absolute rates are sensitive to steric hindrance from the cis ligand (the reactivity decreases along the sequence PMe3 > PEt3 PBun3). The phosphorus in the P(OMe)3 complex is also subject to nucleophilic attack and unambiguous kinetics could only be obtained in the reactions with Br– and I–.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Chemical Society, Dalton Transactions
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
