The binary intermetallic clathrates K8-xSi46 (x = 0.4; 1.2), Rb6.2Si46, Rb11.5Si136 and Cs7.8Si136 were prepared from M₄Si₄ (M = K, Rb, Cs) precursors by spark-plasma route (SPS) and structurally characterized by Rietveld refinement of PXRD data. The clathrate-II phase Rb11.5Si136 was synthesized for the first time. Partial crystallographic site occupancy of the alkali metals, particularly for ...

Investigation of charge-transfer (CT) complexes of drugs has been recognized as an important phenomenon in understanding of the drug-receptor binding mechanism. Structural, thermal, morphological and biological behavior of CT complexes formed between drug quinidine (Qui) as a donor and quinol (QL), picric acid (PA) or dichlorodicyanobenzoquinone (DDQ) as acceptors were reported. The newly synth...

Gas sensors play vital role in detecting, monitoring and controlling the presence of hazardous and poisonous gases in the atmosphere at very low concentrations. The composite prepared by mixing carbon black with PMMA has very good gas sensing applications. The gas sensors based on Carbon nanotube / polymer, ceramic and metal oxide, epoxide, polyimide, PMMA / BaTiO3 and SnO2 have also been devel...

ZnO nanostructures were synthesized by hydrothermal method using different molar ratios of cetyltrimethylammonium bromide (CTAB) and Sodium dodecyl sulfate (SDS) as structure directing agents. The effect of surfactants on the morphology of the ZnO crystals was investigated by field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) techniques. The results i...

In the case of fully potassium exchanged X and LSX faujasites, it was reported from a single crystal X-ray study on zeolite X and preliminary powder X-ray diffraction (PXRD) study on zeolite LSX that K ions can be found concomitantly in both sites I and I’ with partial or full occupancy of site I inside the hexagonal prism depending on the Si/Al ratio of the matrix. Such experimental observatio...

Metastable phases of the photoswitchable molecular magnet K 0.3 Co[Fe(CN) 6 ] 0.77 ⋅ nH 2 O in sub-micrometer particles have been structurally investigated by synchrotron powder x-ray diffraction (PXRD) measurements. The bulk compound (studied here with a sample having average particle size 500 nm) undergoes charge transfer coupled spin transition (CTCST), where configurations change between pa...

Spinel iron oxide nanoparticles of different mean sizes in the range 10–25 nm have been prepared by surfactant-free up-scalable near- and super-critical hydrothermal synthesis pathways characterized using a wide advanced structural characterization methods to provide highly detailed description. The atomic structure is examined combined Rietveld analysis synchrotron powder X-ray diffraction (PX...

In this study, a dabigatran etexilate edisylate (DBE) was prepared by the reaction crystallization of (DBG) and edisilic acid. According to single crystal X-ray diffraction (SXRD), it revealed that two DGB were combined with one associated water for DBE monohydrate. Additionally, hot stage microscopy showed monohydrate transformed amorphous solid then finally shifted anhydrate in solid-state. U...

• A green, simple and fast synthetic approach for the growth of Y-BTC MOFs is reported. fine tailoring structure morphology observed as a function operative parameters. Both time temperature play role on control MOFs. The synthesis can be easily scaled-up production in large scale. Metal-Organic Frameworks (MOFs) are extended three-dimensional metal-organic clusters created by self-assembly met...