Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1301429 | Inorganic Chemistry Communications | 2015 | 4 Pages |
•Non-photochemical synthesis of Re(diimine)(CO)2(L)Cl compounds (L = P(OEt)3, PMe3)•Effect of ligand variation (displaying scope of synthetic method)•Characterization of three new Re(diimine)(CO)2(L)Cl compounds•X-ray crystallographic structure ReCl(4,4′-di-tertbutyl-2,2′-bipyridine)(CO)2P(OEt)3
The synthesis and characterization of a series of compounds of the type Re(diimine)(CO)2(L)Cl (where L = P(OEt)3, PMe3) is reported. The non-photochemical ligand substitution (non-PLS) utilizes the trans-labilizing effect of phosphorus ligands to facilitate carbonyl replacement. The non-PLS pathway leads to good yields (> 60%) of single isomer products, comparing favorably to the lower yield, mixed isomer products of analogous PLS pathways. The substitution of a carbonyl group by a phosphine/phosphite ligands shifts absorption further into the visible region without diminishing molar absorptivity. The synthesis presented provides a general facile ligand substitution pathway for related light-sensitive neutral rhenium/manganese carbonyl halide compounds.
Graphical abstractA generalized reaction is shown for the primary products of the paper. A light bulb is crossed-out to indicate that the synthesis is non-photochemical in nature. Below this are sample UV/vis spectra (highlighting the bathochromic shift upon ligand substitution).Figure optionsDownload full-size imageDownload as PowerPoint slide