Electrocatalytic water oxidation activity of a copper(ii) complex, 1, [Cu(L1H)(L1)(OH2)](ClO4), with a redox active aryl oxime ligand, L1H [L1H = 1-(pyridin-2-yl) ethanone oxime] has been investigated.

A semisolid gel material is a gift of serendipity via various chemical interactions, and metal incorporation (metallogels) imparts diverse functional properties. In this work, we have synthesized four metallogels from tetrapodal and hexapodal carboxylic acid/amide-based low-molecular-weight gelators with Ni(II) and Cu(II) salts. These metallogels can be tuned to be a low-temperature precursor of porous spinel oxides. These xerogels exhibit impressive water soluble dye and carbon dioxide adsorption, which coupled with the tunability and facile synthesis of porous spinel oxides underscores their potential in environmental remediation and energy applications.

Sequestration of hazardous radioactive iodine and dye separation to reduce industrial waste through reutilization is pivotal for environmental safety. In this regard, herein, synthesis of a new waterborne ultrasensitive supramolecular...

Reaction of ethylidenepyridyl-functionalized bisphosphonates with vanadium containing oxo compounds has afforded three different bisphosphonate-polyoxovanadate derivatives, viz. 3), obtained in aqueous ammonium acetate buffer solutions (pH 4.7). Polyanions 1 and 2 were synthesized by the reaction of V2O5 with 1-hydroxy-2-(2-pyridyl) ethylidene-1,1-bisphosphonic acid (L1) and 1-hydroxy-2-(3-pyridyl) ethylidene-1,1-bisphosphonic acid (L2), respectively. Polyanion 3 was obtained by the reaction of VOSO4 with 1-hydroxy-2-(4-pyridyl) ethylidene-1,1-bisphosphonic acid (L3), in the presence of pyrazine. Single crystal X-ray diffraction and elemental analysis reveal that all the polyanions are crystallized as ammonium salts,Polyanions 1 and 2 crystallize in the non-centrosymmetric space group P21212 and have an Sshaped assembly containing two different sets of vanadium atoms, based upon their oxidationstate and different coordination environments. Polyanion 3 crystallizes in the centrosymmetric trigonal space group R𝟑 ̅ c and is observed to have a highly symmetric trinuclear structure. The polyanions have been characterized in solution with 1 H and 31 P NMR, and optical spectroscopy, and in the solid state with detailed magnetic analysis. The magnetic studies under an external dc field showed paramagnetic behavior in agreement with the presence of V(IV) ions for 1a-3a.Furthermore, in vitro studies of the synthesized bisphosphonate-polyoxovanadate compounds were observed to exhibit peroxidase like activity, and hence were employed to enhance the antibacterial activity of H2O2 solution at very low concentrations thereby minimizing the 3 possibilities of other side effects. Isostructural derivatives of compounds 1a and 2a with L3, viz. 4a), has been identified using infrared spectroscopy, and characterized with NMR spectroscopy and elemental analysis.Similarly, an isostructural derivative of 3a with L2, viz. (NH4)2[H6(V IV O)3(O){O3P-C(OH)(CH2-3-C5NH4)-PO3}3]•21H2O (5a), has also been identified using infrared spectroscopy, and characterized with elemental analysis.