title: Synthesis ofC2-Symmetric Dimeric Re(I) Peptide Complexes.
abstract: The reactions of [Re(CO)3(H2O)3]Br or Re(CO)5Cl with two peptides, glycylglycine or glycylalanine, were investigated. Each reaction produced a unique, well-defined product. Structural elucidation showed the formation of chiral compounds with the formula [Re(CO)3(Gly-Xxx-O)]2, Xxx = Gly1, Ala2. Each dimer displaysC2-symmetry and a nearly rectangular shape. The ligands are boundviathe amine and amide carbonyl at a rhenium center andviathe pendant carboxylate to the adjacent rhenium center. Both products are fully characterized, via X-ray structure elucidation.
authors: Department of Chemistry, College of the Holy Cross, Worcester, MA 01610.
authors: Richard S
authors: RS
authors: Herrick
authors: Christopher J
authors: CJ
authors: Ziegler
authors: Kathryn L
authors: KL
authors: Kennedy
authors: Calvin
authors: C
authors: Luu
authors: James T
authors: JT
authors: Engle
keywords: Carbonyl ligands; Crystal structures; Dipeptides; Rhenium
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