Synthesis of a polyurethane containing Mo-Mo bonds in the backbone

Abstract

A polyurethane with Mo-Mo bonds in the backbone was synthesized by reaction of the ‘diol’{η⁵-C₅H₄C(O)CH₂OH}₂Mo₂(CO)₆ with 1,6-hexamethylene di-isocyanate; irradiation of the polymer in tetrahydrofuran solution results in cleavage of the metal–metal bonds and subsequent fragmentation of the polymer.