A new heterobimetallic manganese–rhodium carbonyl complex derived from partially alkylated s-indacene

This work describes the synthesis and characterization by means of 1H, 13C NMR and FT-IR spectroscopies of new heterobinuclear carbonylated complex derived from partially alkylated s-indacene. The heterobimetallic complex [(CO)3Mn(2,6-diethyl-4,8-dimethyl-s-indaceneiide)Rh(COD)] 1 was synthesized from the monometallic specie [(CO)3Mn(2,6-diethyl-4,8-dimethyl-1-hydroindacenide)] and [Rh(μ-Cl)(COD)]2. Secondly, its respective carbonylated complex [(CO)3Mn(2,6-diethyl-4,8-dimethyl-s-indaceneiide)Rh(CO)2] 2 was obtained by under an atmosphere of carbon monoxide in hexanes. Theoretical calculations of these two compounds were carried out to gain further understanding of these novel molecular systems.

Graphical abstractThis work describes the synthesis and characterization by means of 1H, 13C NMR and FT-IR spectroscopies of new heterobinuclear carbonylated complex derived from partially alkylated s-indacene. The heterobimetallic complex [(CO)3Mn(2,6-diethyl-4,8-dimethyl-s-indaceneiide)Rh(COD)] 1 was synthesized from the monometallic specie [(CO)3Mn(2,6-diethyl-4,8-dimethyl-1-hydroindacenide)] and [Rh(μ-Cl)(COD)]2. Secondly, its respective carbonylated complex [(CO)3Mn(2,6-diethyl-4,8-dimethyl-s-indaceneiide)Rh(CO)2] 2 was obtained by under an atmosphere of carbon monoxide in hexanes. Theoretical calculations of these two compounds were carried out to gain further understanding of these novel molecular systems.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► We used the dianion species of the bridging ligand, via a two-step procedure. ► Firstly the coordination of the Mn fragment followed by of the Rh group. ► The carbonylated complex was obtained quantitatively by bubbling CO. ► We obtained the formation of the one isomeric form of the bimetallic complexes.