Iron β-diiminate complexes with As2-, As4- and As8-ligands. Issue 86 (7th October 2020)

• Record Type: Journal Article
• Authors: Spitzer, Fabian; Balázs, Gábor; Graßl, Christian; Scheer, Manfred
• Is Part Of: Chemical communications. Volume 56:Issue 86(2020)
• Page Start: 13209
• Page End: 13212
• Publication Date: 2020-10-07
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d0cc05173j
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Depending on the sterics of the flanking group at the β-diiminate ligand at Fe(i ) a tetramerisation or dimerisation of As4 units is observed; for the latter case the ligand conformation was influenced by the crystallization temperature. Abstract : Different substituents at the β-diiminato ligand in low-valent [LFe(tol)] (L = β-diiminato) complexes fundamentally change their reactivity towards yellow arsenic. By using dmp (2, 6-dimethylphenyl) as flanking groups, the tetranuclear complexes [(LFe)4 As8 ] (L = L 1 (1 ), L 2 (2 )) are isolated. For dipp (2, 6-diisopropylphenyl) substituted ligands, dinuclear complexes [(LFe)2 ( cyclo -As4 )] (L = L 3 (3a ), L 4 (4a )) are obtained. Not only the choice of the ligand impacts the product formation, but also the temperature of the crystallization can shift their ratio in the solid state.