Cover Picture: Controlled Expansion of a Strong‐Field Iron Nitride Cluster: Multi‐Site Ligand Substitution as a Strategy for Activating Interstitial Nitride Nucleophilicity (Angew. Chem. Int. Ed. 40/2018). Issue 40 (20th August 2018)

• Record Type: Journal Article
• Authors: Drance, Myles J.; Mokhtarzadeh, Charles C.; Melaimi, Mohand; Agnew, Douglas W.; Moore, Curtis E.; Rheingold, Arnold L.; Figueroa, Joshua S.
• Is Part Of: Angewandte Chemie international edition. Volume 57:Issue 40(2018)
• Page Start: 12979
• Page End: 12979
• Publication Date: 2018-08-20
• Subjects: cluster expansion -- isocyanides -- metal clusters -- metal surfaces -- nitrides; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201808887
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract : The strong π‐acidity of the twelve CO ligands of [Fe4 (μ4 ‐N)(CO)12 ] − reduces the reactivity of the interstitial nitrogen atom. In their Communication on page 13057 ff., J. S. Figueroa et al. show that replacing four of the CO ligands with electron‐donating m‐terphenyl isocyanides (turbine generators) activates the nucleophilicity of the nitride (light bulb) such that cluster expansion is achieved by reaction with electrophiles (moths). Just as the moths create unevenness at the edge of the image, the resultant electron‐rich iron clusters successfully mimic structural deformations of metal surfaces.