Journal Article10.1039/DT9810001556
A structural profile of the bis(2,2′-bipyridyl)monochlorocopper(II) cation. Crystal structures of bis(2,2′-bipyridyl)monochlorocopper(II) perchlorate and the nitrate trihydrate
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TL;DR: In this article, a structural profile between a near regular trigonal-bipyramidal CuN4Cl chromophore of C2 symmetry and a square-pyramidal distorted structure was constructed.
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Abstract: The crystal structures of the title compounds [Cu(bipy)2Cl][ClO4], (1), and [Cu(bipy)2Cl][NO3]·3H2O, (2), have been determined by X-ray diffraction methods using three-dimensional diffractometer data; the structures were solved by heavy-atom techniques and successive Fourier synthesis. Compound (1) crystallises in the monoclinic space group P21/c with a= 10.761(5), b= 12.253(5), c= 16.990(5)A, β= 112.18(5)°, Z= 4, and (2) crystallises in the monoclinic space group P21/a with a= 14.305(5), b= 21.213(5), c= 8.234(5)A, β= 114.90(4)°, Z= 4. The [Cu(bipy)2Cl]+ cation in both (1) and (2) involves a square-pyramidal distorted trigonal-bipyramidal CuN4Cl chromophore with the distortion in (1) greater than in (2). From a correlation of the bond-length and bond-angle distortion of the structures of five[Cu(bipy)2Cl]+ cation distortion isomers a structural profile has been constructed between a near regular trigonal-bipyramidal CuN4Cl chromophore of C2 symmetry, and a square-pyramidal chromophore. The electronic reflectance spectra have been established as an ‘electronic criteria of stereochemistry’ for the CuN4Cl chromophore, which involves a single peak at 12 500 cm–1 for the trigonalbipyramidal geometry and twin peaks at 13 240 and 10 470 cm–1 for the square-pyramidal distorted structure.
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Citations
MLCT excited states of cuprous bis-phenanthroline coordination compounds
TL;DR: In this article, a 5-coordinate excited state complex, or exciplex, is proposed to account for temperature dependent quenching data of bis-phenanthroline (dπ)6 transition metal compounds.
417
Improving the photophysical properties of copper(I) bis(phenanthroline) complexes
Aurélie Lavie-Cambot,Martine Cantuel,Yoann Leydet,Gediminas Jonusauskas,Dario M. Bassani,Nathan D. McClenaghan +5 more
TL;DR: An overview of key excited-state processes established in these complexes is presented in this paper, with particular emphasis on recent developments and insights, as well as ramifications for developing successful strategies to prolong luminescence lifetimes and increase quantum yields.
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Structural aspects of copper catalyzed atom transfer radical polymerization
TL;DR: In this paper, structural features of copper(I) and copper(II) complexes with bidentate, tridentate and tetradentate nitrogen based ligands commonly used in atom transfer radical polymerization (ATRP) were extensively reviewed and discussed based on several spectroscopic techniques.
277
Comparative Crystallography. 5. Crystal Structures, Electronic Properties, and Structural Pathways of Five [Cu(phen)2Br][Y] Complexes, Y = [Br]-·H2O, [ClO4]-, [NO3]-·H2O, [PF6]-, and [BPh4]-
TL;DR: In this paper, the crystal structures of six cation distortion isomers of the [Cu(phen)2Br][Y] series of complexes were determined by X-ray diffraction.
100
Polyoxometalate-Supported Transition Metal Complexes and Their Charge Complementarity: Synthesis and Characterization of [M(OH)6Mo6O18{Cu(Phen)(H2O)2}2][M(OH)6Mo6O18{Cu(Phen)(H2O) Cl}2]·5H2O (M = Al3+, Cr3+)
Vaddypally Shivaiah,Samar K. Das +1 more
TL;DR: The title compounds have been synthesized in a simple one pot aqueous wet-synthesis consisting of aluminum/chromium chloride, sodium molybdate, copper nitrate, phenanthroline, and hydrochloric acid, and characterized by elemental analyses, EDAX, IR, diffuse reflectance, EPR, TGA, and single-crystal X-ray diffraction.
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