Related Experiment Video
Updated: Jan 31, 2026

Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes
Published on: November 21, 2017
Heterotetrametallic Re-Zn-Zn-Re Complex Generated by an Anionic Rhenium(I) β-Diketiminate
Trevor D Lohrey1,2, Laurent Maron3, Robert G Bergman1
1Department of Chemistry , University of California, Berkeley , Berkeley , California 94720 , United States.
Abstract:
We report the synthesis of an anionic rhenium(I) compound, Na[Re(η5-Cp)(BDI)] (1; Cp = cyclopentadienide, BDI = N, N'-bis(2,6-diisopropylphenyl)-3,5-dimethyl-β-diketiminate) and initial investigations of its use as a strong chemical reductant and metalloligand. Chemical oxidation of 1 gives a rare example of a rhenium(II) compound Re(η5-Cp)(BDI) (2), while protonation of 1 yields the rhenium(III) hydride complex Re(H)(η5-Cp)(BDI) (3). The reaction of 1 with ZnCl2 generated both 2 and the zinc(I) compound [ZnRe(η5-Cp)(BDI)]2 (4), which features a linear, tetrametallic Re(I)-Zn(I)-Zn(I)-Re(I) core. Computational studies of 4 were performed to characterize the metal-metal bonding interactions; the results indicate a dative interaction from rhenium to zinc and covalent bonding between the two zinc centers. One-electron oxidation of 4 yielded both 2 and the triflate-bridged zinc(II) complex [(μ-OTf)ZnRe(η5-Cp)(BDI)]2 (5, OTf = trifluoromethanesulfonate).
Related Concept Videos
Aromatic Hydrocarbon Anions: Structural Overview
Due to the absence of continuous...
Protein Complexes with Interchangeable Parts
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
Anionic Chain-Growth Polymerization: Overview
Anionic Chain-Growth Polymerization: Mechanism
Protein Complex Assembly
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Complex Numbers

