Intermediate particles in the catalysis of radical reactions of chlorohydrocarbons

Compounds with the copper(II)-carbon bond: EPR spectroscopy and quantum chemistry

“…1, II). The formation of the latter in the course of photo chemical transformations of (R 4 ) 2 Cu has been previously suggested [3,9]. Thus, model compound II can be close in composition to complex 2 Cu.…”

“…chlorocuprates (R 4 ) 2 Cu yields alkyl radicals, copper(I) compounds, and two paramagnetic copper complexes denoted as 1 Cu and 2 Cu [3,4]. Similar compounds have been identified upon photolysis of tetrachlorocuprates in a frozen ethanol matrix, as well as upon the direct reaction of copper(I) compounds with organic radicals generated by γ radiolysis [5].…”

Syntheses, Crystal Structures and Spectroscopic Studies of Bis[1‐methyl‐3‐(methoxycarbonylmethyl)‐benzimidazolium]2+ [CuBr4]2− and [ZnBr4]2− Compounds

“…[18] The tetrahalidocuprates are used in catalysis as precursors for CuÀCl bonds in metathesis reaction. [19] A variety of commensurate and incommensurate crystalline phases is present in halidocuprates with structural phase transitions appearing in a broad temperature range. [20] Cu(II) tetrachloro and tetrabromo complexes exhibit thermochromic behavior, observed as color change from green for a square-planar geometry to yellow or violet for a distorted tetrahedral geometry on heating which usually appears below room temperature.…”

“…[CuCl 4 ] 2− based ionic liquids exhibiting antimicrobial activity and tetrahedral CuN 2 S 2 ‐complexes are active sites in copper “blue” proteins . The tetrahalidocuprates are used in catalysis as precursors for Cu−Cl bonds in metathesis reaction . A variety of commensurate and incommensurate crystalline phases is present in halidocuprates with structural phase transitions appearing in a broad temperature range .…”

Quantum chemistry of organocuprates as intermediates of catalytic and photochemical reactions

“…[17][18][19][20][21][22][23][24] Meanwhile, due to spectral data not a few labile transients, probably compounds with Cu(II)AC bond, may form in conditions of catalytic and photochemical reactions or directly by reaction of Cu(I) complexes with organic radicals. [25,26] However, the interpretation of the spectra (first of all, UV-Vis, EPR-Electron Paramagnetic Resonance) is complicated and sometimes impracticable due to the absence of analogues among corresponding well-known substances.…”