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Slow Magnetic Relaxation in Intermediate Spin S = 3/2 Mononuclear Fe(III) Complexes.
Feng, Xiaowen; Hwang, Seung Jun; Liu, Jun-Liang; Chen, Yan-Cong; Tong, Ming-Liang; Nocera, Daniel G.
Affiliation
  • Feng X; Department of Chemistry and Chemical Biology, Harvard University , 12 Oxford Street, Cambridge, Massachusetts 02138, United States.
  • Hwang SJ; Department of Chemistry and Chemical Biology, Harvard University , 12 Oxford Street, Cambridge, Massachusetts 02138, United States.
  • Liu JL; Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University , Guangzhou 510275, P. R. China.
  • Chen YC; Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University , Guangzhou 510275, P. R. China.
  • Tong ML; Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University , Guangzhou 510275, P. R. China.
  • Nocera DG; Department of Chemistry and Chemical Biology, Harvard University , 12 Oxford Street, Cambridge, Massachusetts 02138, United States.
J Am Chem Soc ; 139(46): 16474-16477, 2017 11 22.
Article in En | MEDLINE | ID: mdl-29068206
ABSTRACT
Magneto-structural correlation studies of mononuclear intermediate S = 3/2 Fe(III) complexes, (PMe3)2FeCl3 (1) and (PMe2Ph)2FeCl3 (2), demonstrate the influence of local symmetry on magnetic anisotropy. Symmetric compound 1 is characterized by a zero-field splitting (ZFS) parameter of D = -50(2) cm-1, leading to the observation of slow magnetic relaxation with an energy barrier of 81 cm-1 along with magnetic hysteresis up to 4 K, whereas symmetrically perturbed compound 2 displays a much reduced ZFS parameter of D = -17(1) cm-1 and energy barrier of Ueff = 46 cm-1.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Am Chem Soc Year: 2017 Type: Article Affiliation country: United States
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Am Chem Soc Year: 2017 Type: Article Affiliation country: United States