Irenes mechanism

Irene Verona Scheusted, A Course on the Application of Group Theory to Quantum Mechanics, NEO Press, Peaks Island, ME, 1976. 

Contents L. Jaenicke and F.-J. Marner The Irenes and Their Precursors. — M. Lounasmaa and P. Somersalo The Condylocarpine Group of Indole Alkaloids. — U. Sequin The Antibiotics of the Pluramycin Group (4//-Anthra [l,2- ]pyran Antibiotics). — R. M. Wenger Cyclosporine and Analogues — Isolation and Synthesis — Mechanism of Action and Structural Requirements for Pharmacological Activity. — H. Inouye and S. Uesato Biosynthesis of Iridoids and Secoiridoids. — Author Index. — Subject Index. 

When pure rrcifu-PtCl2(Bu3p)2 is placed in solution with a trace of BujP, isomerization occurs to give a mixture of cis and Irene isomers. Provide a plausible mechanism. 

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