How Rigidity and Conjugation of Bidentate Ligands Affect the Geometry and Photophysics of Iron N-Heterocyclic Complexes: A Comparative Study
Om Prakash,
Pavel Chábera,
Nidhi Kaul
et al.
Abstract:Two iron complexes featuring the bidentate, nonconjugated Nheterocyclic carbene (NHC) 1,1′-methylenebis(3-methylimidazol-2-ylidene) (mbmi) ligand, where the two NHC moieties are separated by a methylene bridge, have been synthesized to exploit the combined influence of geometric and electronic effects on the ground-and excited-state properties of homoleptic Fe IIIhexa-NHC [Fe(mbmi) 3 ](PF 6 ) 3 and heteroleptic Fe II -tetra-NHC [Fe-(mbmi) 2 (bpy)](PF 6 ) 2 (bpy = 2,2′-bipyridine) complexes. They are compared t… Show more
A N–Co–N core is embedded within [Co(CNC)2]2+ (1) supported by two bis(4-methyl-2-(3-methyl-imidazolium)phenyl)amine (CNC) ligands. This species reveals a stable S = ½ state and its spin density is significantly delocalized...
A N–Co–N core is embedded within [Co(CNC)2]2+ (1) supported by two bis(4-methyl-2-(3-methyl-imidazolium)phenyl)amine (CNC) ligands. This species reveals a stable S = ½ state and its spin density is significantly delocalized...
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