Abstract
The molecular structure of [Cu2(MeCN)2(μ-tpy)2][BPh4]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) Å, β = 123.13(3)°; V = 6930(2) Å3, Z = 4, R = 0.0613, wR
2 = 0.0946.
Graphical Abstract
The 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.
Keywords Copper(I) - Terpyridine - Acetonitrile - Bridge - Helix