From phosphanylphosphaalkenes to coordination copper and silver polymers containing P-P bonds.

This study was focused on the activation of the CP bond reactions of PhCP-PBu (1) with 1,6-hexanediol and selected dithiols (1,4-butanedithiol, 1,4-benzenedithiol and 1,4-benzenedimethanethiol). These reactions proceed according to a 1,2-addition mechanism, providing new compounds with formulas {(Ph)(H)C-P-PBu}{μ-(O-(CH)-O)}{BuP-P-C(H)(Ph)} (2), {(Ph)(H)C-P-PBu}{μ-(S-(CH)-S)}{BuP-P-C(H)(Ph)} (3a), {(Ph)(H)C-P-PBu}{μ-(S-CH-S)}{BuP-P-C(H)(Ph)} (3b), and {(Ph)(H)C-P-PBu}{μ-(S-CH-CH-CH-S)}{BuP-P-C(H)(Ph)} (3c). Next, the reactions of 3a and 3c with metal chlorides led to the growth of desired coordination polymers of copper(I) and silver(I). All the obtained compounds remained stable under atmospheric conditions.