Molecular Structure of [Cu2(MeCN)2(μ-tpy)2][BPh4]2: A Helical Di-Cuprous Terpyridine Complex

Abstract

AbstractThe molecular structure of [Cu 2 (MeCN) 2 (μ-tpy) 2 ][BPh 4 ] 2 has been determined. The two terpyridine ligands coordinate to the same Cu(I) center in a bidentate configuration, in which the copper adopted a distorted tetrahedral geometry with the four nitrogen donors. The third ring of each terpyridine ligand forms a bridge with a second Cu(I) center, whose tetrahedral coordination sphere is completed by two acetonitrile ligands. The resulting structure represents a section of a double helix. Crystal data: space group C2/c, a = 27.202(5), b = 12.995(3), c = 23.409(5) A, β = 123.13(3)°; V = 6930(2) A 3 , Z = 4, R = 0.0613, wR 2 = 0.0946.Graphical AbstractThe molecular structure of [Cu 2 (MeCN) 2 (μ-tpy) 2 ][BPh 4 ] 2 has been determined. The terpyridine ligands coordinate in a bidentate fashion to the same Cu center and monodentate to a second Cu center resulting in a double helical structural motif.[IMAGE]