Comparison of the aromatic regions in the 1H NMR spectra of solutions of a) [FurNeu](Cu2(μ-O))(OTf)2, 5, and b) [FurNeu](Cu(NCCH3))2(OTf)2, 3, respectively, in acetonitrile-d3. The signals detected and the positions of the corresponding H atoms within the molecule are denoted with the help of the capital letters. Moreover, spectrum a) contains the signal set of the by-product iodobenzene (PhI).