Multiple magnetic relaxation pathways in T-shaped N-heterocyclic carbene-supported Fe(i) single-ion magnets. Issue 4 (15th March 2019)

• Record Type: Journal Article
• Authors: Meng, Yin-Shan; Ouyang, Zhengwu; Yang, Mu-Wen; Zhang, Yi-Quan; Deng, Liang; Wang, Bing-Wu; Gao, Song
• Is Part Of: Inorganic chemistry frontiers. Volume 6:Issue 4(2019)
• Page Start: 1050
• Page End: 1057
• Publication Date: 2019-03-15
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c9qi00073a
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : The magnetic properties of T-shaped N-heterocyclic carbene-supported Fe(i ) complexes were studied. Both of them exhibited multi-pathway magnetic relaxation behaviors. Abstract : The magnetic properties of the T-shaped three-coordinate complexes, namely, [(sIMes)2 Fe(THF)][BPh4 ] (1, sIMes: 1, 3-bis(2′, 4′, 6′-trimethylphenyl)-imidazolin-2-ylidene) and [(cyIMes)2 Fe(THF)][BPh4 ] (2, cyIMes: 1, 3-bis(2′, 4′, 6′-diethylphenyl)-4, 5-(CH2 )4 -imidazol-2-ylidene) and quasi-linear two-coordinate complexes [(sIDep)2 Fe][BAr F 4 ] (3, sIDep: 1, 3-bis(2′, 6′-diethylphenyl)-imidazolin-2-ylidene; Ar F : 3, 5-di(trifluoromethyl)phenyl) and [(cyIDep)2 Fe][BAr F 4 ] (4, cyIDep: 1, 3-bis(2′, 6′-diethylphenyl)-4, 5-(CH2 )4 -imidazol-2-ylidene) were studied. Magnetic characterization indicated the unquenched first-order angular momentum and large zero-field splitting. AC susceptibility measurements showed that the T-shaped three-coordinate Fe(i ) complexes exhibited field-induced relaxation of magnetization. The Direct, resonant quantum tunneling, and Raman processes were observed and contributed to the determination of the overall magnetic relaxations.