Figure 2.

Left: Molecular structure of [(MeCN)@LCu₄]₆. Although, each of the six calixarene cavities contains one acetonitrile molecule as a guest, only one is displayed and hydrogen atoms as well as co‐crystallized solvent molecules are omitted for clarity, too; right: Structure of the core of [LCu₄]₆, viewed along the central axis of two opposing [LCu₄] units. Selected bond lengths [Å] and angles [°]: Cu1′⋅⋅⋅Cu1^# 2.4725(16), Cu1′‐S1′ 2.2524(17), Cu1′‐S2′ 2.2396(18), Cu1′‐S1* 2.4718(17), Cu1′‐S1⁺ 2.2408(18), S2′‐Cu1′‐S1′ 94.84(6), S1′‐Cu1′‐S1* 98.66(8), S2′‐Cu1′‐S1* 89.86(11), S1*‐Cu1′‐S1⁺ 114.16(5), Cu1′‐S1*‐Cu1^# 63.04(8). Symmetry code: (′) −1+z, −1+x, y; (*) 1−x, −1+z, y; (#) 1−z, 0.5−y, 1.5−x; (+) −1+x, 0.5−y, 1.5−z.19