Center-symmetric dimeric Re(CO)3+ complexes with Schiff base derivatives of salicylic aldehyde

A simple synthetic procedure (reaction between Re(CO)5Cl and 2-[(E)-(phenylimino)methyl]- or 2-[(E)-(n-propylimino)-methyl]-phenol) leads to novel dimeric Re2(CO)6(N∩O−)2 complexes with the structures confirmed by means of X-ray crystallography. The obtained species have been characterized by means of elemental analysis, FT-IR, UV–VIS absorption, and EI-MS spectroscopy. The solvolysis experiments performed in dimethylsulfoxide solutions point to well pronounced stability of the investigated species.