Synthesis, Crystal Structures, Electronic Spectra, and Magnetic Properties of Thiolato-Bridged Trinuclear Cobalt(II) Complexes with N, N, S-Tridentate Thiolate Ligands

Masahiro Mikuriya; Atsushi Fujita; Takanori Kotera; Daisuke Yoshioka; Hiroshi Sakiyama; Makoto Handa; Motohiro Tsuboi

doi:10.26877/asset.v3i1.8352

Synthesis, Crystal Structures, Electronic Spectra, and Magnetic Properties of Thiolato-Bridged Trinuclear Cobalt(II) Complexes with N, N, S-Tridentate Thiolate Ligands

Masahiro Mikuriya, Atsushi Fujita, Takanori Kotera, Daisuke Yoshioka, Hiroshi Sakiyama, Makoto Handa, Motohiro Tsuboi

Abstract

New trinuclear Co^II complexes, [{Co(apaet)₂}₂Co]X₂ (apaet^– = 2-[(3-aminopropyl)amino]ethanethiolato; X = SCN (1), ClO₄ (2), NO₃(3), Cl (4), Br (5), I (6)) and [{Co(apampt)₂}₂Co]X₂ (apampt^– = 1-[(3-aminopropyl)amino]-2-methylpropane-2-thiolato; X = NO₃(7), ClO₄ (8), Cl (9), Br (10), I (11)), and mononuclear Co^III complexes, [Co(apaet)₂]X (X = ClO₄ (12), NO₃(13)), were synthesized. Single-crystal X-ray crystallography of 1 and 7 confirmed that the trinuclear complexes have a linear arrangement of octahedral Co^IIS₂N₄-tetrahedral Co^IIS₄-octahedral Co^IIS₂N₄ chromophores where two thiolate ligands are coordinated to each terminal Co atom in a mer coordination mode and the two thiolato S atoms are further bound to the central Co atom, which is consistent with the electronic spectra and antiferromagnetic properties

Keywords

thiolato complex; cobalt complex; mononuclear Co(III) complex; trinuclear Co(II) complex

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