Copper(Ⅱ) carboxylate tetramers formed from an enantiopure ligand containing a π-stacking supramolecular synthon: single-crystal to single-crystal enantioselective ligand exchange

摘要

An enantiopure ligand built from connecting the π...π stacking 1,8-naphthalimide supramolecular synthon with L-asparagine, L_(asn)~-, forms tetrameric [Cu4(L_(asn))8(py)(MeOH)]. The methanol ligand, located in a chiral pocket, is replaced enantio-selectively when exposed to racemic ethyl lactate vapor to yield [Cu_4(L_(asn))_8(py)((S)-ethyl lactate)], in a single-crystal to single-crystal gas/solid transformation.