Synthesis and properties of hydrophobic [MnIV2(μ-O)3(L)2]2+ complexes, derived from alkyl substituted 1,4,7-triazacyclononane ligands

The Evolution of Catalysis for Alkyd Coatings: Responding to Impending Cobalt Reclassification with Very Active Iron and Manganese Catalysts, Using Polydentate Nitrogen Donor Ligands

“…We therefore screened the ligands shown in Figure 10 in combination with equimolar levels of Mn II (2-EH) 2 at 0.01% Mn. In most cases we either blended the ligands with the manganese soap at a 1:1 molar ratio to form the catalyst in-situ, or the manganese complexes have been prepared [61,62] (denoted in Figure 10). For some experiments we increased the ratio of ligand to Mn II (2-EH) 2 .…”

“…Dry times of [Mn IV 2(μ-O)3(Me3TACN)2](PF6)2 (abbreviated as Mn-Me3TACN) versus Co II (2-EH)2 in two formulated, commercial alkyd paints. [Mn IV 2(μ-O)3(L)2](PF6)2 complexes with L = Me3TACN analogues, such as Me2BTACN (1-benzyl-4,7-dimethyl-1,4,7-triazacyclononane)[61] and Et3TACN (1,4,7-triethyl-1,4,7-triazacyclononane)[62] were tested as well for alkyd curing and were found to yield comparable alkyd resin curing activity as [Mn IV 2(μ-O)3(Me3TACN)2](PF6)2 (all in the presence of one molar equivalent of ascorbic acid)…”

Synthesis, structural characterization and alcohol oxidation activity of a new mononuclear manganese(II) complex

“…Since manganese is known to be catalytically active in a variety of metalloenzymes, manganese complexes have been widely used as catalysts to promote oxidation reactions [15][16][17][18][19]. In fact, many catalytic studies in recent years have found that manganese complexes can exhibit a diversity of catalytic oxidation reactions on organic substrates in organic solvents [20,21]. Numerous complexes of terpyridine and oligopyridines with manganese have been investigated because of their interesting structural, redox, photochemical, catalytic, and water oxidation properties [22][23][24][25][26][27][28][29][30][31][32][33].…”

Dinuclear manganese complexes containing 1,4-dimethyl-1,4,7-triazacyclononane ligands as well as carboxylato and oxo bridges

“…Whereas the methyl substituents in L-Me 3 can be replaced by other alkyl groups without much change in the coordination chemistry [22], replacing only one of the three methyl groups for hydrogen inhibits the formation of the Mn 2 (O) 3 core [23]. Thus, with the ligand 1,4-dimethyl-1,4,7-triazacyclononane (L-Me 2 ) only the Mn(III)-…”