Transformation of graphene oxide in supercritical media

Russian Chemical Bulletin - Graphene oxide (GO) synthesized according to the modified Hummers method was reduced by supercritical isopropyl alcohol (SCI), supercritical acetone (SCA), and...     

Natural biofibers as polyfunctional ligands for metal-containing nanoparticles

Metal nanoparticles were fixed on the surface of a human hair and sheep wool through partial replacement of the citrate ions coordinated by Ag nanoparticles by ligands within the fiber, and nanoparticle growth within the fiber bulk was noted.     

Rhenium Compounds with Metal–Metal Multiple Bonds: X-Ray Spectral Study of the Electronic Structure

The electronic structures of the binuclear complexes [(NH₄)₂Re₂Cl₈)] · 2H₂O and Re₂(CH₃COO)₄Br₂ were studied using ReL₅ X-ray emission spectra. The distribution of the Re 5d AOs and Cl 3p AOs in the MOs of these complexes was analyzed. The ReL₅ spectra of the complexes exhibit components corresponding to the metal–metal -bond. The contribution of the rhenium 5d AOs to the bond in [(NH₄)₂Re₂Cl₈)] · 2H₂O is almost twice as low as in Re₂(CH₃COO)₄Br₂.     

Cyanation of a ruthenicinium salt

Conclusions In the presence of ferric chloride, ruthenocene undergoes direct cyanation with the formation of the previously undescribed ruthenocenecarbonitrile. Ruthenocene is far less active in this reaction than ferrocene.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 935–937, April, 1967.     

Replacement of Fe atoms by Ru in a carbidocarbonyl cluster [Fe<Subscript>6</Subscript>C(CO)<Subscript>16</Subscript>]<Superscript>2−</Superscript>. Structures of reaction products

The reaction of the carbidocarbonyl cluster [Fe₆C(CO)₁₆]²⁻ with ruthenium(IV) hydroxochloride Ru(OH)Cl₃ was studied. At 90–100 °C, the reaction gave products of replacement of Fe atoms by Ru in the [Fe₆C(CO)₁₆]²⁻ cluster along with degradation products. Treatment of the replacement products with FeCl₃ afforded the [Fe_2.96Ru_3.04C(CO)₁₇] compound (1), which was characterized by X-ray diffraction analysis. The crystals of cluster 1 are composed of two types of octahedral molecules (1a and 1b) in a ratio of 2 : 1. Molecules 1a are in general positions, and molecules 1b are located on twofold axes. In both molecules, the Fe and Ru atoms are disordered over four of six positions. __________ Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1761–1766, August, 2005.