Inorganics

Support of dinuclear copper triketonate complexes on silica: Monolayer loading from complex footprint and the first crystallographically characterized cis dipyridine adduct
To demonstrate that monolayer coverage of a complex can be estimated from the footprint area of the complex and surface area of the support, various loadings of two dinuclear copper complexes, bis(heptane-2,4,6-trionato)dicopper(II) [Cu2(daa)2] and bis(1,5-diphenyl-1,3,5-pentanetrionato)dicopper(II) [Cu2(dba)2], were supported on Cab-O-Sil by batch impregnation. The supported samples were chara...


Salicylaldehyde-(2-hydroxyethyl)imine – A flexible ligand for group 13 and 14 elements
The reaction of salicylaldehyde-(2-hydroxyethyl)imine (H2L), 1, with organoelement halides from group 13 and 14 leads to a variety of coordination compounds. Depending on the size of the central atom and the organic substituents, tetra-, penta- or hexacoordinated complexes emerge. When the central atom of the complex has a small atom radius and small substituents, like methyl groups, coordinati...
Three energetic salts based on oxy-bridged bis(gem-dinitro) furazan: Syntheses, structures and thermal behaviors
Three high-energy salts (3, 4 and 5) based on oxy-bridged bis(gem-dinitro) furazan with potassium and nitrogen-rich cations were reported. Their structures were fully characterized and confirmed by NMR (1H, 13C), IR spectroscopy, elemental analysis and single crystal X-ray diffraction. The thermal decomposition behaviors were studied by DSC and TG methods. And, the decomposition process of 5 wa...


Microstructure and Properties of In Situ Si and Fe-rich Particles Reinforced Al Matrix Composites Assisted with Ultrasonic Vibration
In this research, the in situ Si and Fe-rich particles reinforced Al matrix composites were fabricated by rheocasting (RC) process assisted with ultrasonic vibration (USV). After USV treatment, the polygonal primary Si crystals were refined into particles with average diameter of about 15–23 μm, and the fraction of primary Si declined to about 5.4–6.5 vol%. The coarse plate-like δ-Al4(F...
Influence of Deep Cryogenic Treatment on Microstructures and Mechanical Properties of an Ultrafine-Grained WC-12Co Cemented Carbide
Effect of deep cryogenic treatment (DCT) on the microstructures and mechanical behavior of ultrafine-grained WC-12Co cemented carbide was investigated by using XRD, SEM, and DSC. The phase transformations of pure Co and binder phase Co in cemented carbide were analyzed in detail to correlate the strengthening mechanism with its α → ε phase transition. The results show that DCT resulted in...


High-flux ptychographic imaging using the new 55 µm-pixel detector `Lambda' based on the Medipix3 readout chip
Suitable detection systems that are capable of recording high photon count rates with single-photon detection are instrumental for coherent X-ray imaging. The new single-photon-counting pixel detector `Lambda' has been tested in a ptychographic imaging experiment on solar-cell nanowires using Kirkpatrick–Baez-focused 13.8 keV X-rays. Taking advantage of the high count rate of the Lambda and...
Seitz symbols for symmetry operations of subperiodic groups
Recently adopted International Union of Crystallography conventions for the notation of Seitz symbols of symmetry operations require a revision of the Seitz notation used in International Tables for Crystallography Vol. E, Subperiodic Groups. This paper gives the subperiodic group symmetry operations blocks of Vol. E with the Seitz symbol for each included symmetry operation in the recently ado...

A study of one-dimensional incommensurate modulated structure determination in high-resolution transmission electron microscopy
The methods for determining incommensurate modulated structures (IMSs) in high-resolution transmission electron microscopy have been studied and improved to a level more perfect than before. This is demonstrated by means of the IMS determination for Bi2.31Sr1.69CuO6+δ as an example. First, as previously, the projected potential map (PPM) of the IMS with resolution 0.2 nm was obtained after i...
Self-assembly and luminescent properties of one novel tetranuclear Cd(II) complex based on 8-hydroxyquinolinate ligand
One novel tetranuclear Cd(II) complex, namely [Cd4Br2L6] (1) was fabricated by solvothermal reaction of CdBr2 salt with a 2-substituted 8-hydroxyquinolinate ligand HL. The complex was characterized by elemental analysis, IR spectra, thermal analysis, single-crystal X-ray diffraction and powder X-ray diffraction. And X-ray structural analysis shows that complex 1 exhibits a face fused double-ope...

Clicking thiourea into a salen scaffold: Structures and cytotoxicity of cobalt(II) and nickel(II) complexes
A thiourea moiety has been introduced into the known salen-type ligand scaffold to give a new unsymmetric ligand (L) by using a simple CLICK chemistry. The cobalt(II) and nickel(II) complexes of this ligand were prepared by a one-pot procedure and structurally characterized. X-ray structural analysis confirmed that the two complexes are isomorphic and exhibit a tetra-coordinate metal center in ...
Coordination polymers from 1-D to 3-D assembled from disulfonate ligands: Structures and luminescent properties
Four rare earth organodisulfonate coordination polymers, {[Tb2(phen)4(nds)3(H2O)2]·4H2O}n (1), {[Ln(phen)(nds)(OH)]}n[Ln=Sm , Nd ], {[Tb(phen)2(nds)0.5(OH)·H2O]·(nds)0.5}n , were synthesized under the solvothermal conditions by using ligands 2,6-naphthalenedisulfonate (L=nds) and 1,10-phenanthroline (L′=phen). Single-crystal X-ray diffraction reveals that compounds 1 and 4 exhibit differen...

Efficient Blue Light-Emitting Diodes Based on Conjugated Polymers with Fluorinated Silole Chemically Doped in Fluorene–Carbazole Main Chain
A series of random conjugated copolymers PFCFS1-20 with 2,5-diphenyl-3,4-bis(3-fluorophenyl)-silole (fluorinated TPS) chemically doped in 2,7-fluorene-2,7-carbazole main chain were successfully synthesized and characterized. Polymers PFCFS1-20 with fluorinated TPS contents from 1 to 20 % possess high weight-average molecular weights between 63.5 and 114.1 kg mol−1. The absorption spectra o...
Phase transformations and metallurgical properties of barium-strontium modifier
In laboratory conditions, phase transformations and metallurgical properties of barium-strontium modifier are studied in conditions corresponding to the ladle treatment of steel. The results show that barium-strontium modifier is suitable for practical use.
Structure and thermodynamic activity of sooty carbon
The particles of sooty carbon obtained by the Boudoir reaction have a complex openwork architecture, including globular amorphous and graphitized crystalline elements with nanometer crosslinks, as shown by scanning electron microscopy. The amorphous small-scale structure of sooty carbon is responsible for increase in Gibbs energy and high kinetic activity.
Carburization of crude steel from a superpowerful arc furnace
Optimal carburization principles are formulated for the production of pipe steel when using a superpowerful arc furnace. Laboratory and industrial research confirms the significance of combining reduction and carburization, the quality of the material used for carburization, and the time at which the carbon content is corrected. The use of silicon carbide for combined carburization and reductio...