1: Li / diethyl ether / 25 °C 2: HCl / diethyl ether / 25 °C View Scheme

in benzene-d6 dissolution in benzene; free phosphine is present in 3percent to total phosphorus content at 21°C and ca. 20percent at 80°C, shift of the equil. upon addn. of 1 equiv of phosphine ligand or (RhCl(COD))2 confirmes the reversibility of the reaction; (31)P and (1)H NMR spectral data;

in benzene-d6 freshly recrystd. Rh-complex was dissloved in benzene-d6; no dissociation of phosphine ligand occured; (31)P NMR data;

in chloroform-d1 byproducts: cyclooctene, {RhCl(cyclooctene)2}2; recrystd. dimer was dissolved in CDCl3 under inert atmosphere; (31)P NMR data;