An Unprecedented Tridentate-Bridging Coordination Mode of Permanganate Ions: The Synthesis of an Anionic Coordination Polymer-[Co(NH)][(K(κ-Cl)(μ-(κ-O,O',O″-MnO))]-Containing Potassium Central Ion and Chlorido and Permanganato Ligands.

A unique compound (compound ) with structural features including an unprecedented tridentate-bridging coordination mode of permanganate ions and an eight-coordinated (rhombohedral) κ-chlorido and tridentate permanganato ligand in a potassium complex containing coordination polymer (Co(NH)][(K(κ-Cl)(μ-(κ-O,O',O″-MnO))) with isolated regular octahedral hexamminecobalt(III) cation was synthesized with a yield of >90%. The structure was found to be stabilized by mono and bifurcated N-H∙∙∙Cl and N-H∙∙∙O (bridging and non-bridging) hydrogen bonds. Detailed spectroscopic (IR, far-IR, and Raman) studies and correlation analysis were performed to assign all vibrational modes.

Thermally Induced Solid-Phase Quasi-Intramolecular Redox Reactions of [Hexakis(urea-)iron(III)] Permanganate: An Easy Reaction Route to Prepare Potential (Fe,Mn)O Catalysts for CO Hydrogenation.

Research on new reaction routes and precursors to prepare catalysts for CO hydrogenation has enormous importance. Here, we report on the preparation of the permanganate salt of the urea-coordinated iron(III), [hexakis(urea-)iron(III)]permanganate ([Fe(urea-O)](MnO)) via an affordable synthesis route and preliminarily demonstrate the catalytic activity of its (Fe,Mn)O thermal decomposition products in CO hydrogenation. [Fe(urea-O)](MnO) contains O-coordinated urea ligands in octahedral propeller-like arrangement around the Fe cation.

Solid-Phase "Self-Hydrolysis" of [Zn(NH)MoO@2HO] Involving Enclathrated Water-An Easy Route to a Layered Basic Ammonium Zinc Molybdate Coordination Polymer.

An aerial humidity-induced solid-phase hydrolytic transformation of the [Zn(NH)]MoO2HO (compound 2HO) with the formation of [(NH)HZn(OH)(MoO)] (x = 0.92-0.94) coordination polymer (formally NHZn(OH)MoO, compound ) is described.

Solid-Phase Quasi-Intramolecular Redox Reaction of [Ag(NH)]MnO: An Easy Way to Prepare Pure AgMnO.

Two monoclinic polymorphs of [Ag(NH)]MnO containing a unique coordination mode of permanganate ions were prepared, and the high-temperature polymorph was used as a precursor to synthesize pure AgMnO. The hydrogen bonds between the permanganate ions and the hydrogen atoms of ammonia were detected by IR spectroscopy and single-crystal X-ray diffraction. Under thermal decomposition, these hydrogen bonds induced a solid-phase quasi-intramolecular redox reaction between the [Ag(NH)] cation and MnO anion even before losing the ammonia ligand or permanganate oxygen atom.

An unknown component of a selective and mild oxidant: structure and oxidative ability of a double salt-type complex having κO-coordinated permanganate anions and three- and four-fold coordinated silver cations.

Compounds containing redox active permanganate anions and complexed silver cations with reducing pyridine ligands are used not only as selective and mild oxidants in organic chemistry but as precursors for nanocatalyst synthesis in low-temperature solid-phase quasi-intramolecular redox reactions. Here we show a novel compound (4AgpyMnO·AgpyMnO) that has unique structural features including (1) four coordinated and one non-coordinated permanganate anion, (2) κO-permanganate coordinated Ag, (3) chain-like [Ag(py)] units, (4) non-coordinated ionic permanganate ions and an [Ag(py)] tetrahedra as well as (5) unsymmetrical hydrogen bonds between pyridine α-CHs and a permanganate oxygen. As a result of the oxidizing permanganate anion and reducing pyridine ligand, a highly exothermic reaction occurs at 85 °C.