Fig. (3) ORTEP diagram of the dinuclear molecule of [Cu₂(tbng)₄(dmf)₂]·4dmf with atom labeling. Thermal ellipsoids are drawn at the 50% probability level. Hydrogen atoms are omitted for clarity. Selected bond distances(Å) and angles (°). Cu···Cu ⁱ 2.6345(12), Cu1-O1 1.977(3), Cu1-O2ⁱ 1.964(3), Cu1-O6 1.957(3), Cu1-O7ⁱ 1.957(3), Cu1-O11 2.166(3); O1-Cu1-O2ⁱ 168.95(11), O1-Cu1-O6 87.31(12), O1-Cu1-O7ⁱ 92.52(12), O2ⁱ-Cu1-O6 90.56(12), O2ⁱ-Cu1-O7ⁱ 87.38(12), O6-Cu1-O7ⁱ 168.34(12), O11-Cu1-O1 91.02(11), O11-Cu1-O6 92.44(12), O11-Cu1-O2ⁱ 99.90(11), O11-Cu1-O7ⁱ 99.22(12). Symmetry code (i): (–x, –y, –z).