A manganese (II) dimer bearing the reduced derivatives of nitronyl nitroxides. (15th November 2021)

• Record Type: Journal Article
• Authors: Alexandropoulos, Dimitris I.; Kong, Fanmiao; Lombardi, Federico; Horton, Peter N.; Coles, Simon J.; Bogani, Lapo
• Is Part Of: Polyhedron. Volume 209(2021)
• Publication Date: 2021-11-15
• Subjects: Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2021.115427
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Abstract: We report the synthesis, magnetic EPR and conducting properties of a new manganese complex [Mn II (hfac)2 (IMHPhOPh)]2 [Mn II (hfac)3 ](IMH2 PhOPh) (1 ), containing the reduced forms (IMHPhOPh and IMH2 PhOPh) of the NIT-PhOPh radical (NIT-PhOPh = 2, 4'-benzoxo-4, 4, 5, 5-tetramethylimidazoline-1-oxyl-3-oxide). Magnetic susceptibility studies reveal the presence of weak antiferromagnetic exchange interactions between the metal ions, within the [Mn II (hfac)2 (IMHPhOPh)]2 unit. The EPR spectra of 1 exhibit simultaneous contributions of both the monomeric [Mn II (hfac)3 ] and dimeric [Mn II (hfac)2 (IMHPhOPh)]2 species. Conductivity measurements shown that the electrical conduction of 1 is dominated by Ohm's law, with a conductance value of 1.3 ( 6 ) × 10 - 9 S/cm.