Use of [SbF₆]⁻ to Isolate Cationic Copper and Silver Adducts with More than One Ethylene on the Metal Center

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Article discussing the use of [SbF₆]⁻ to isolate cationic copper and silver adducts with more than one ethylene on the metal center.

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8 p.: ill.

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Fianchini, Mauro; Campana, Charles; Chilukuri, Bhaskar; Cundari, Thomas R., 1964-; Petricek, Vaclav & Dias, H. V. Rasika Creation Date: Unknown.

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Article discussing the use of [SbF₆]⁻ to isolate cationic copper and silver adducts with more than one ethylene on the metal center.

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8 p.: ill.

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Reprinted with permission from Organometallics. Copyright 2013 American Chemical Society.

Abstract: A cationic tris(ethylene)copper(I) and tris(ethylene)silver(I) adduct has been isolated using hexafluoroantimonate counterion. X-ray crystallographic analysis shows that the metal atom in these adducts coordinates to three ethylene molecules in a trigonal planar fashion, forming a spoke-wheel arrangement. In [M(C₂H₄)₃][SbF₆] adducts (M = Cu, Ag, Au), the average M-C distances of 2.189 Å for Cu and 2.410 Å for Ag can be compared with the corresponding distance for 2.268 Å for Au and show that the copper (I) complex has the shortest while the silver adduct displays the longest M-C distances. These agree well with the computed values (2.172, 2.408, and 2.308 Å for Cu, Ag, and Au analogue, respectively) and follow the same trend as the covalent radii of M(I). Structural data on [μ₃-Cl{Cu(C₂H₄)₂}₃][SbF₆]₂, which features bis(ethylene)copper(I) moieties, are also presented. It has a trigonal planar Cu₃Cl core with a triply bridging chloride ion bonded to three trigonal planar copper centers. Ethylene molecules are bonded in an η²-fashion. The data indicate that while these [M(C₂H₄)₃]⁺ complexes may be primarily electrostatic in their metal-ethylene binding, there remains an important covalent contribution, particularly for the copper and gold congeners.

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  • Organometallics, 2013, Washington D.C.: American Chemical Society, pp. 3034-3041

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  • Publication Title: Organometallics
  • Volume: 32
  • Issue: 10
  • Page Start: 3034
  • Page End: 3041
  • Peer Reviewed: Yes

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  • May 15, 2013

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  • Sept. 13, 2013, 2:58 p.m.

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  • Jan. 9, 2015, 5:03 p.m.

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Fianchini, Mauro; Campana, Charles; Chilukuri, Bhaskar; Cundari, Thomas R., 1964-; Petricek, Vaclav & Dias, H. V. Rasika. Use of [SbF₆]⁻ to Isolate Cationic Copper and Silver Adducts with More than One Ethylene on the Metal Center, article, Date Unknown; [Washington, D.C.]. (digital.library.unt.edu/ark:/67531/metadc181682/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.