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Slow Magnetic Relaxation in a Mononuclear Five‐Coordinate Cu(II) Complex
Author(s) -
Cui HuiHui,
Lv Wei,
Tong Wei,
Chen XueTai,
Xue ZiLing
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201900942
Subject(s) - chemistry , diamagnetism , magnetization , relaxation (psychology) , electron paramagnetic resonance , raman spectroscopy , paramagnetism , ion , nuclear magnetic resonance , magnetic field , atmospheric temperature range , nuclear magnetic resonance spectroscopy , crystallography , condensed matter physics , analytical chemistry (journal) , stereochemistry , psychology , social psychology , physics , organic chemistry , quantum mechanics , chromatography , meteorology , optics
A mononuclear five‐coordinate Cu(II) complex [Cu(12‐TMC)Cl][B(C 6 H 5 ) 4 ] ( 1 ) (12‐TMC = 1,4,7,10‐tetramethyl‐1,4,7,10‐tetraazacyclododecane) with distorted square pyramidal geometry has been synthesized and characterized by single‐crystal X‐ray diffraction, direct‐current and alternating‐current magnetic measurements and electron paramagnetic resonance (EPR) spectroscopy. The complex displays slow magnetic relaxation under an external dc field. The analysis of the field‐ and temperature‐dependence of the relaxation rates suggests that the slow dynamics of the magnetization is dominated by the Raman‐like process in the temperature range of 1.8 K to 11 K under an applied dc field of 0.15 T. In addition, the results of magnetic dynamics for the diluted sample with diamagnetic Zn(II) ions confirms the molecular origin of slow magnetic relaxation.