Crystal Structure of the Polymer Copper(II) Complex with 1-Phenyl-3-Methyl-4-Formyl-5-Hydroxypyrazole Hetarylhydrazone

A new coordination polymer of Cu(II) based on 1-phenyl-3-methyl-4-formyl-5-hydroxypyrazole 4,6-dimethylpyrimidylhydrazone is synthesized. The polymer is studied by X-ray diffraction analysis (CIF file CCDC no. 1565772). It is shown that the polymer is formed due to the coordination of the nitrogen atom of the pyrazolone fragment to the copper(II) ion of the adjacent monomeric fragment.     

Interaction of therapeutic ultrasound with purified enzymes in vitro

The effects of ultrasound on the rates of the catalytic reactions of four purified enzymes in vitro have been extensively investigated under a wide range of biochemical and physical exposure conditions. In general, it can be concluded that therapeutic intensities of continuous wave 0.88 MHz ultrasound had no detectable direct effects on the rates of the reactions catalysed by creatine kinase, lactate dehydrogenase, hexokinase and pyruvate kinase. Some minor effects were noted. These were: an indirect effect resulting from mixing within the sample chamber caused by quartz wind streaming; an effect on partially-hydrated cross-linked enzyme systems which appears to be the result of increased fluid penetration of the solid matrix in the presence of ultrasound; and an increase in the rate of spontaneous dissociation of a multimeric enzyme system. It is, therefore, concluded that a direct interaction between ultrasound and the catalytic functioning of individual enzyme molecules is unlikely to be the primary step in any acousto-biological interaction, and that this primary interaction appears to be occurring at a higher level of organizational complexity.     

New 2,5-diformylpyrrole bishydrazones

Russian Journal of General Chemistry -     

Tribologically active azomethine metal complexes

Russian Journal of General Chemistry - Oil-soluble bis(salicylideneiminates) were prepared chemically (from acetates of 3d-metals) and electrochemically (by anodic dissolution of complex forming...     

Methacrylate composites containing maleic derivatives of cyclotriphosphazene

Oligophosphazenes containing carboxyl groups and copolymerizable double bonds are synthesized through the interaction between hexa-p-hydroxymethylphenoxycyclotriphosphazene and maleic anhydride. The synthesized compounds with a controlled ratio of carboxyl groups and double bonds are used as modifiers of methacrylate dental composites that exhibit high adhesion to hard dental tissues and metals.     

Synthesis and Crystal Structure of 2D Coordination Polymer {[Cu(dps)2(DMSO)2](ClO4)2}n Based on 4,4′-Dipyridyl Sulfide

A new coordination polymer {[Cu(dps)₂(DMSO)₂](ClO₄)2}_n has been synthesized basing on 4,4′- dipyridyl sulfide. The structure of the obtained complex has been studied by single-crystal X-ray diffraction analysis.

     

Synthesis,Structural, and Physico-Chemical Study of Transition Metal Complexes with Schiff Base: A Product of Condensation of 2- N -Tosylaminobenzaldehyde and Tryptamine

A new Schiff base, the product of 2-N-tosylaminobenzaldehyde and tryptamine condensation, was synthesized and investigated. A physicochemical study and quantum chemical simulation of the azomethinee tautomerism were performed. Its complexes with Zn(II), Cu(II), Ni(II), Co(II), and Fe(III) were synthesized and studied.     

Phase Transformations in Iron Oxide under the Action of Microwave Radiation

Technical Physics - It has been shown that microwave radiation induces structural and, as a consequence, magnetic phase transformations in iron oxide α-Fe2O3 (hematite). After microwave...