Tethered Polynuclear Copper–Chalcogenolate Assemblies Enabled via NHC Ligation

The polynuclear copper–chalcogenolate complexes, 1,1′-fc[CH2ECu(IPr)]2 (E = S (1), E = Se (2); fc = ferrocenyl; IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene), [1,4-{CH2ECu(IPr)}2C6Me4] (E...