Citation: Xun FENG, Haipeng FANG, Yang AN, Ce ZHANG, Xueyi CHEN, Bowen GUO. Crystal structures and magnetic properties of manganese and cobalt binuclear complexes based on nitroxide radical[J]. Chinese Journal of Inorganic Chemistry, ;2024, 40(2): 421-429. doi: 10.11862/CJIC.20230277 shu

Crystal structures and magnetic properties of manganese and cobalt binuclear complexes based on nitroxide radical

Xun FENG ^1,, ,
Haipeng FANG ¹ ,
Yang AN ¹ ,
Ce ZHANG ¹ ,
Xueyi CHEN ² ,
Bowen GUO ³

1.
College of Chemistry and Chemical Engineering and Henan Key Laboratory of Function Oriented Porous Materials, Luoyang Normal University, Luoyang, Henan 471934, China
2.
Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
3.
College of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang, Henan 473601, China

Corresponding author: Xun FENG, fengx@lynu.edu.cn
Received Date: 26 July 2023
Revised Date: 10 December 2023

Figures(5)

Two analogous binuclear coordination complexes derived from nitronyl nitroxide radical ligands have been synthesized. Their general formulae are [Mn₂(hfac)₄(NIT-mo-pmy)₂] (1) and [Co₂(hfac)₄(NIT-mo-pmy)₂] (2), respectively, where hfac=hexafluoroacetylacetone and NIT-mo-pmy=2-(2-methoxy-5′-pyrimidinyl)-4,4,5,5-tetra-methyl-imidazoline-3-oxy-1-oxyl radical. Both complexes crystallize in a triclinic system P1 space group, exhibiting a centrosymmetric rectangle-like array based on dimer coordination units. Variable-temperature magnetic characterizations reveal the presence of antiferromagnetic exchanges between central ions and nitroxide radicals in both fourspin nitroxide radical complexes. The different strengths of both complexes were investigated based on structure-property relationship analysis. The magnetic behaviors of the Mn (Ⅱ) complex have been quantitatively evaluated through an appropriate magnetic model and were compared with the relevant complexes.
- manganese(Ⅱ) complex,
- cobalt(Ⅱ) complex,
- crystal structure,
- NIT-mo-pmy radical ligand,
- antiferromagnetic interaction
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