An anionic binuclear complex of tungsten(II), [(μ-Cl)3{W(SnCl3)(CO)3}2]−, and its reactivity towards norbornene

An anionic binuclear complex of tungsten(II), [(μ-Cl)3{W(SnCl3)(CO)3}2]− (1−), containing the protonated piperidine molecule [Hpip]+ as the counter ion, has been obtained and its molecular structure elucidated by single-crystal X-ray diffraction studies. In the presence of complex 1−, norbornene transformed to a new olefin, 2,2′-binorbornylidene with ca. 50% yield.