A Pentanuclear Cobalt Complex with two [CoII(CH3O)3]– Units Wrapping a Triangular [CoIII3O]7+ Core: Synthesis, Structure, and Magnetic Properties. Issue 12 (25th June 2018)

• Record Type: Journal Article
• Authors: Yang, Hua; Li, Ruiling; Li, Dacheng; Zeng, Suyuan; Dou, Jianmin
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 644:Issue 12/13(2018)
• Page Start: 585
• Page End: 589
• Publication Date: 2018-06-25
• Subjects: Phenyl 2‐pyridyl ketone oxime -- Mixed‐valence cobalt -- Synthesis -- Structure elucidation -- Magnetic properties; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201800138
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract : The reaction of Hppko (Hppko = phenyl 2‐pyridyl ketone oxime) and CoCl2 · 6H2 O in the CH3 OH solvent with the presence of triethylamine (NEt3 ) at room temperature and the exposure to air resulted in the formation of a new pentanuclear, mixed‐valence cobalt complex with the molecular formula [{Co II (CH3 O)3 }2 {Co III 3 (μ3 ‐O)(ppko)3 }Cl2 ]. X‐ray single crystal analysis displays a trigonal bipyramid configuration with the terminal two Co II ions wrapping an triangle [Co III 3 O] 7+ core. The intermolecular C–H··· O and C–H··· Cl interactions form a 2D network framework. The analysis of magnetic susceptibility revealed the dominant antiferromagnetic interactions and strong orbital contribution of Co II ions. Abstract :