A novel manganese(III) quadridentate Schiff-base dimeric complex: synthesis, crystal structure and magnetic properties

Tris(μ-phenoxo) bridged Cd(II) polymer synthesised from a symmetrical tripodal ligand: A novel observation for heptadentate monocapped trigonal antiprismatic Schiff base complex

“…A review of the chemistry of such tripodal amine Schiff base ligands clearly reveals the fact that all the previously reported complexes are confined to monomeric [7] or dimeric [8,9] units in which all of the N 4 O 3 donor atoms coordinate to a single central metal ion or in the latter case where the metal centers are bridged by phenolato oxygens to build up a dimeric system of transition or even inner transition metal ions. Our group has already reported several singly or diphenoxo bridged transition or non-transition metal complexes in the past and has also shown the expertise in building many interesting coordination complexes using several bridging coligands with variable donor properties [10][11][12][13]. As a continuation of our earlier investigations, we have now been able to successfully highlight a strikingly new feature of coordination demonstrated by one tripodal heptadentate symmetric compartmental Schiff base.…”

Magnetic assemblies based on Mn(III) salen analogues

“…Indeed, structural evidence of both species has been obtained from the crystallization of similar reactions: for example, there is a monomer [ Table 2 Pertinent bond distances (Å) and Angles ( • ) for Mn(III) out-of-plane dimeric complexes and magnetic parameters obtained from the simulation of the magnetic susceptibility (F = ferromagnetic interaction, AF = antiferromagnetic interaction, NI = non-interaction, nd = no data in the literature) Table 3 Pertinent bond distances (Å) and angles ( • ) for Mn(III) salen out-of-plane dimeric cores in metal-assembled compounds and magnetic parameters obtained from the simulation of the magnetic susceptibility (F = ferromagnetic interaction, AF = antiferromagnetic interaction, NI = non-interaction, nd = no data in the literature) The Mn(III) salen out-of-plane dimers are of great interest from a magnetic point of view. A number of such compounds have been structurally characterized and magnetically investigated so far [66,[93][94][95][96][97][98][99][100][101][102][103][104][105]58,48,41,67,94,11,49,76,45,51]. Furthermore, hetero-metal assembled compounds containing the Mn(III) dimer moiety were also designed (Section 5).…”

Mild and highly efficient transformation of thiols to symmetrical disulfides using urea–hydrogen peroxide catalyzed by a Mn(III)–salen complex

“…The complex 1 was prepared by a procedure similar to that used by Karmaker et al [23] However, 1,2-diaminoethane was used instead of 1,3-diaminopropane.…”