Fenton-like Chemistry by a Copper(I) Complex and HO Relevant to Enzyme Peroxygenase C-H Hydroxylation.

Lytic polysaccharide monooxygenases have received significant attention as catalytic convertors of biomass to biofuel. Recent studies suggest that its peroxygenase activity (i.e.

Structure and Reactivity of Nonporphyrinic Terminal Manganese(IV)-Hydroxide Complexes in the Oxidative Electrophilic Reaction.

High-valent transition metal-hydroxide complexes have been proposed as essential intermediates in biological and synthetic catalytic reactions. In this work, we report the single-crystal X-ray structure and spectroscopic characteristics of a mononuclear nonporphyrinic Mn-(OH) complex, [Mn(Me-TPADP)(OH)(OCHCH)] (), using various physicochemical methods. Likewise, [Mn(Me-TPADP)(OH)(OCHCF)] (), which is thermally stable at room temperature, was also synthesized and characterized spectroscopically.

Dynamic Transformation of a Ag-Coordinated Supramolecular Nanostructure from a 1D Needle to a 1D Helical Tube via a 2D Ribbon Accompanying the Conversion of Complex Structures.

We report a unique dynamic morphology transformation of a Ag-coordinated supramolecular nanostructure accompanying the conversion of complex structures in aqueous solution. In the presence of AgNO (1.0 equiv), the achiral bipyridine-based ligand , possessing hydrazine and glycine moieties, preferentially generated a 1D needle-like structure (nanostructure I) based on the AgNO complex (:Ag = 1:1) as a metastable product.

Nucleophilic reactivity of a mononuclear cobalt(iii)-bis(tert-butylperoxo) complex.

A mononuclear cobalt(III)-bis(tert-butylperoxo) adduct (CoIII-(OOtBu)2) bearing a tetraazamacrocyclic ligand was synthesized and characterized using various physicochemical methods, such as X-ray, UV-vis, ESI-MS, EPR, and NMR analyses. The crystal structure of the CoIII-(OOtBu)2 complex clearly showed that two OOtBu ligands bound to the equatorial position of the cobalt(iii) center. Kinetic studies and product analyses indicate that the CoIII-(OOtBu)2 intermediate exhibits nucleophilic oxidative reactivity toward external organic substrates.