Molecular tectonics: enantiomerically pure chiral crystals based on trans-1,2-cyclohexanediol

Abstract

Enantiomerically pure trans-1,2-cyclohexanediol ((R,R) or (S,S)) based organic ligands act self-complementary units. In addition, their coordination behavior towards Cd2+ cation in the presence of N donor ancillary ligand was investigated.

Modular enhancement of circularly polarized luminescence in Pd2A2B2 heteroleptic cages

“…Ligand B is inspired by chiral cyclohexyl based tectons 42 that have been used for the generation of chiral coordination networks in the crystalline phase. [43][44][45] Both ligands A and enantiomerically pure R,R-B (from now on just B) are obtained in a one-step reaction from commercially available reagents, following literature-reported procedures. [46][47][48][49] These simple building blocks are then combined with [Pd(MeCN) 4 ](BF 4 ) 2 in acetonitrile in a 1 : 1 : 1 ratio, yielding a rather structurally complex heteroleptic cage [Pd 2 A 2 B 2 ](BF 4 ) 4 (namely Pd 2 A 2 B 2 ; Scheme 1b).…”

“…Ligand B is inspired by chiral cyclohexyl based tectons 42 that have been used for the generation of chiral coordination networks in the crystalline phase. 43–45…”