Manganese oxide doped with silver nanoparticles was synthesised by co-precipitation method. The w/w percentage of silver was varied from 1 to 5 and was calcined at different temperatures. The oxidation catalytic properties of these materials were investigated for the conversion of benzyl alcohol to benzaldehyde using molecular oxygen as clean oxidant. It was observed that the calcination temperature and surface area of the catalyst play a significant role in the catalytic process. The w/w percentage of silver present in the catalyst affects the oxidation property.

The green synthesis of metallic nanoparticles (NPs) has attracted tremendous attention in recent years because these protocols are low cost and more environmentally friendly than standard methods of synthesis. In this article, we report a simple and eco-friendly method for the synthesis of silver NPs using an aqueous solution of Pulicaria glutinosa plant extract as a bioreductant.

Based on crystal engineering principles, we have explored the predictability of resulting structures of a multi-component pharmaceutical model complex derived from 4-hydroxybenzoic acid (4HBA) and quinidine, an anti-malarial constituent of Cinchona tree bark. Though the obtained complex is stabilized by a slightly different set of charge-assisted heterosynthons as proposed, the applied concept was efficient in predicting the salt formation. The salt 1 crystallizes in a monoclinic space group [P21 (no.

Applicability of the O-H· · ·N heterosynthon for synthesis of a pharmaceutical co-crystal comprised of a commonly used tablet excipient methyl paraben and quinidine, an anti-malarial constituent of Cinchona tree bark, has been successfully demonstrated. Insights into local conformation and hydrogen-bonding were derived from advanced multinuclear solid-state NMR techniques, where interpretation of the obtained NMR data was supported by DFT quantum-chemical computations.

The template-mediated, hydrogen-bond-driven co-crystallization of trans-1,2-bis(4-pyridyl)ethylene (bpe) and resorcinol together with 1,2-bis(4-pyridyl)ethane (bpet) yielded two new polymorphs of 2(bpe): 2(res) and 2(bpet):2(res) molecular adducts, thereby exploiting the molecular specificity of resorcinol-pyridine O-H· · ·N recognition in the presence of multiple dipyridines.

Structural changes of resorcinol (res) and trans-1,2-bis(4-pyridyl)- ethylene (bpe) co-crystals during [2 + 2] photodimerization were monitored by means of single crystal X-ray analysis. The crystals lost their integrity with increasing conversion indicating an interesting case of a non-ideal single-crystal-to-single-crystal transformation. The 2(bpe) : 2(res) heterosynthon yielded two different polymorphs upon photodimerization, i.e.

To explore the robust nature of template resorcinols in organic solid-state reactions, a series of mono- and dipyridines