ArticleOrganometallics2019
One macrocyclic ligand, four oxidation states: A 16-atom ringed dianionic tetra-NHC macrocycle and its Cr(II) through Cr(V) complexes.
Article in Organometallics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 18 citations in OpenAlex.
- Redox and Spin States Series of an Organometallic Heme Analogue Based on a Non-Innocent NHC/N-Donor Hybrid Macrocycle.Inorganic chemistry · 2026Article
- Ligand engineering of tetra N-heterocyclic carbenes for boosting catalytic aziridination.Dalton transactions (Cambridge, England : 2003) · 2024Article
- Poly(imidazolyliden-yl)borato Complexes of Tungsten: Mapping Steric vs. Electronic Features ofMolecules (Basel, Switzerland) · 2023Article
- Synthesis, Photophysical Characterization and Evaluation of Biological Properties of C7, a Novel SymmetricMicroorganisms · 2023Article
- Organometallic Chemistry within the Structured Environment Provided by the Macrocyclic Cores of Carbaporphyrins and Related Systems.Molecules (Basel, Switzerland) · 2023Review
- Actinide tetra-N-heterocyclic carbene 'sandwiches'.Chemical science · 2021Article
- Activation of Molecular Oxygen by a Cobalt(II) Tetra-NHC Complex*.Chemistry (Weinheim an der Bergstrasse, Germany) · 2021Article
- Electronic Finetuning of a Bio-inspired Iron(II) tetra-NHC Complex by trans Axial Isocyanide Substitution.Chemistry, an Asian journal · 2020Article
- A Chiral Macrocyclic Tetra-N-Heterocyclic Carbene Yields an "All Carbene" Iron Alkylidene Complex.Chemistry (Weinheim an der Bergstrasse, Germany) · 2020Article
- One macrocyclic ligand, four oxidation states: A 16-atom ringed dianionic tetra-NHC macrocycle and its Cr(II) through Cr(V) complexes.Organometallics · 2019Article
- Synthesis and structural characterization of 20-membered macrocyclic rings bearing trans-chelating bis(N-heterocyclic carbene) ligands and the catalytic activity of their palladium(ii) complexes.Dalton transactions (Cambridge, England : 2003) · 2019Article
- Unprecedented Five-Coordinate Iron(IV) Imides Generate Divergent Spin States Based on the Imide R-Groups.Angewandte Chemie (International ed. in English) · 2019Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
Despite chromium being among the first transition metals ever reported to bind to an NHC, chromium NHC complexes, especially in mid and high oxidation states, have received scant attention. Herein, the synthesis, characterization, and reactivity of a series of Cr(II) to Cr(V) complexes bearing a 16-atom ringed dianionic tetra-NHC macrocycle are reported. The Cr(II) dimer is diamagnetic and displays a very short Cr-Cr quadruple bond, unprecedented for Cr-NHC complexes to date. Oxidative cleavage of the Cr-Cr bond leads to the formation of a highly stable diamagnetic Cr(IV) oxo complex. Similar reactions with organic azides lead to paramagnetic Cr(IV) imide complexes. Notably, the Cr(IV) oxo can be oxidized in a reversible reaction to yield a Cr(V) cationic oxo complex, which is a very rare high oxidation state Cr-NHC-compound. This Cr(V) oxo undergoes stoichiometric oxygen atom transfer. Similar reactions were attempted with molybdenum and tungsten to form macrocyclic NHC complexes, but only a molybdenum dimer could be isolated.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.