Cuprophilicity-Induced Cocrystallization of [Cu2(4,4'-bpy)(CN)2]n Sheets and [Cu(SCN)]n Chains into a 3-D Pseudopolyrotaxane.

The cocrystallization of [Cu(SCN)]n chains and [Cu2(4,4′-bpy)CN)2]n (4,4′-bpy = 4,4′-bipyridine) layers generated a 3-D pseudopolyrotaxane compound, [Cu2(4,4′-bpy)(CN)2].[Cu(SON)] (1), which can also be viewed as a 3-D network constructed by linkages of 2-D sheets and I-D chains via unsupported CuI-CuI interactions. The CuI-CuI contact of 2.651(4) Å in 1 is the shortest unsupported CuI-CuI distance documented to date, indicating cuprophilic attractions. [ABSTRACT FROM AUTHOR]