Complexes of the type (CO)2(PR3)2Fe-η2-CS2, known to yield different coupling products with alkynes, are studied. In particular two products, the metallocycle L4Fe-C(S)C(R)C(R)S and the 1,3-dithiol-2-ylidene L4Pe-CSC(R)C(R)S, isomerize easily and, for an appropriate choice of the phosphine ligands, are in equilibrium. Extended Hückel calculations and qualitative MO theory are used to analyze the electronic features of these compounds and their possible interconversion pathways. The study illustrates the major orbital effects and, indirectly, the electrostatic effects that may become selective at a certain point of the reaction.
|Number of pages||8|
|Publication status||Published - 1989|
ASJC Scopus subject areas
- Inorganic Chemistry
- Organic Chemistry