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A 1,2,4‐Triazole‐based Polynuclear Mixed‐valence Mn II Mn III Complex: Synthesis, Characterization, and Magnetic Property
Author(s) -
Liu Hui,
Sui Xin,
Zhang Jingyan
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201500160
Subject(s) - valence (chemistry) , crystallography , magnetic susceptibility , chemistry , crystal structure , oxidation state , atom (system on chip) , pyridine , manganese , catalysis , medicinal chemistry , biochemistry , organic chemistry , computer science , embedded system
A mixed‐valence Mn complex {[Mn II Mn III (HL) 2 (4,4′‐bpy)(H 2 O) 2 ] · (ClO 4 )(DMF) 3 (4,4′‐bpy) 0.5 } n ( 1 ) [H 2 L = 3‐(2‐phenol)‐5‐(pyridin‐2‐yl)‐1,2,4‐triazole] was synthesized and characterized by X‐ray single‐crystal structure analysis and magnetic susceptibility. Single‐crystal X‐ray analysis revealed that complex 1 has a dinuclear core, in which adjacent central Mn III atoms are linked by 4,4′‐bipyridine to form an infinite one‐dimensional (1D) molecular configuration. According to the Mn surrounding bond lengths and bond valence sum (BVS) calculations, we demonstrated that the Mn atom coordinated to the pyridine N atoms is in the +2 oxidation state, while another Mn atom coordinated to the phenolic oxygen atoms is in the +3 oxidation state. Magnetic susceptibility data of the complex 1 indicate that the ferromagnetic interaction dominates in this complex.