Magnetic properties of two coordination isomeric cobalt() single-ion magnets

Two isomeric Co( ii ) complexes with the same general molecular formula of [Co(napy) 2 (NO 3 ) 2 ] (napy = 1,8-naphthyridine) have been synthesized. X-ray single crystal structural determination demonstrates that the two compounds exhibit highly irregular six- ( 1 ) and seven-coordinate ( 2 ) geomet...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2023-06, Vol.52 (22), p.7718-7723
Main Authors: Cui, Hui-Hui, Xu, Hong-Juan, Zhang, Tengkun, Luo, Shuchang, Tong, Wei, Wang, Miao, Wang, Jin, Chen, Lei, Tang, Yanfeng
Format: Article
Language:English
Subjects:
Anisotropy
Cobalt
Magnetic induction
Magnetic measurement
Magnetic properties
Magnetic relaxation
Magnets
Single crystals
Superhigh frequencies
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Summary:Two isomeric Co( ii ) complexes with the same general molecular formula of [Co(napy) 2 (NO 3 ) 2 ] (napy = 1,8-naphthyridine) have been synthesized. X-ray single crystal structural determination demonstrates that the two compounds exhibit highly irregular six- ( 1 ) and seven-coordinate ( 2 ) geometries, respectively. The magnetic measurements, X-band EPR data and theoretical calculations were thoroughly investigated. Both complexes show field-induced slow magnetic relaxation, of which the slow magnetic relaxation in 2 is attributed to an easy-plane anisotropy. Two isomeric Co( ii )-SIMs with highly irregular six- and seven-coordinate geometries have been synthesized and fully characterized.
ISSN:1477-9226
1477-9234
DOI:10.1039/d3dt01105d