Ligand-Based Control of Single-Site Vs. Multi-Site Reactivity by a Trichromium Cluster

Overview

Journal Angew Chem Int Ed Engl

Specialty Chemistry

Date 2019 Mar 5

PMID 30828957

Citations 6

Authors

Amymarie K Bartholomew

Cristin E Juda

Jonathon N Nessralla

Benjamin Lin

SuYin Grass Wang

Yu-Sheng Chen

Theodore A Betley

Affiliations

Soon will be listed here.

Abstract

The trichromium cluster ( L)Cr (thf) ([ L] =[1,3,5-C H (NC H -o-NSi BuMe ) ] ) exhibits steric- and solvation-controlled reactivity with organic azides to form three distinct products: reaction of ( L)Cr (thf) with benzyl azide forms a symmetrized bridging imido complex ( L)Cr (μ -NBn); reaction with mesityl azide in benzene affords a terminally bound imido complex ( L)Cr (μ -NMes); whereas the reaction with mesityl azide in THF leads to terminal N-atom excision from the azide to yield the nitride complex ( L)Cr (μ -N). The reactivity of this complex demonstrates the ability of the cluster-templating ligand to produce a well-defined polynuclear transition metal cluster that can access distinct single-site and cooperative reactivity controlled by either substrate steric demands or reaction media.

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