Lewis-Base Adducts of Group 11 Metal(I) Compounds. LXIII. Stereochemistries and Structures of the 1 : 1 Adducts of Cu1X (X = Cl, Br, I) With 2,2'-Bipyridine

Abstract

Syntheses and single-crystal X-ray structural characterizations (at c. 295 K) are recorded for the 1 : 1 adducts of copper(I) chloride, bromide and iodide with L = 2,2′-bipyridine. The chloride is triclinic, Pī , a 14.069(5), b 10.520(3), c 7.872(2)Ǻ, α 69.00(2), β 88.62(3), γ 70.70(2)°, Z = 4 formula units; R was 0.041 for No 1805 'observed' [I > 3σ(I)] reflections. The bromide is monoclinic, P21/c, a 8.788(3), b 13.206(6), c 9.895(3)Ǻ, β 117.90(2)°, Z = 4 formula units; R 0.036 for No 1007. The iodide is monoclinic, C2/c, a 17.571(3), b 8.587(7), c 16.796(3)Ǻ, β 120.17(2)°, Z = 8 formula units; R 0.041 for No 1038. The chloride is ionic, [CuL2]+ [ ClCuCl ]-; in the cation, Cu-N are 2.005(6)-2.039(6)Ǻ with interligand N-Cu-N 114.4(3)-132.4(2)°, while, in the anion, Cl-Cu-Cl is 177.3(1)°, with Cu-Cl 2.086(2) and 2.091(2)Ǻ. The bromide (unlike its 1,10-phenanthroline counterpart, which is ionic) is a centrosymmetric dimer , as also is the iodide. In the bromide, Cu-N are 2.083(6), 2.099(5), and Cu-Br 2.428(2), 2.463(1)Ǻ, Cu…Cu and Br…Br being 2.850(1) and 3.975(2)Ǻ respectively. In the iodide, Cu-N are 2.070(8), 2.08(1), and Cu-I, 2.583(3)Ǻ (×2), and Cu…Cu and I…I are 2.610(2) and 4.420(1)Ǻ.

Di(2‐pyridyl) Ketone Complexes of CuI‐ and CuII‐Containing Iodide and Thiocyanate Ligands: An Unusual Case of a Mixed‐Aldol Condensation

“…[16,[22][23][24] Analogous Cu 2 X 2 (where X = F, Cl or Br) species which contain a halide-bridged square dimer include Cu 2 Br 2 having a Cu-Cu non-bonding distance of 2.850 Å. [26] Complex 4 is monoclinic and exists as layers. The complexes are associated with their identical neighbour through a combination of weak π-π interactions and hydrogen bonding.…”

Synthese und Reaktionsverhalten von Platin(II) und Kupfer(I) Koordinationspolymeren; die Festkörperstruktur von {trans-(Ph3P)2Pt[(η2-CCPh)CuBr]2}n und trans-(Ph3P)2Pt[(η2-CCPh)CuNO3]2

“…Der dort abgebildete dimere Komplex 6 wird in quantitativer Ausbeute erhalten. In 6 weisen die Kupferatome die Koordinationszahl 4 auf[13] …”

Structural and Mechanistic Aspects of Copper Catalyzed Atom Transfer Radical Polymerization

“…The differences in dihedral angles can mostly be attributed to crystal packing forces, as discussed in the literature [95,96] [92,97] . In the case of Cu I X (X = halide) complexes with bpy-based ligands, an additional mode of coordination was observed, which includes formation of a halide-bridged complex [93] . This has been demonstrated in the solid state structure of [Cu [103,104] .…”