Structural and photoluminescent properties of six chiral coordination compounds based on N -acetyl- L -tyrosine

Six novel chiral coordination compounds, namely [Cd(acty)(phen) 2 ](ClO 4 )·3H 2 O 1 , {[Cd(acty)(bpp) 2 (H 2 O) 2 ](NO 3 )·2H 2 O} n 2 , {[Cd(acty)(bpp) 2 (H 2 O) 2 ](ClO 4 )·2H 2 O} n 3 , {[Zn 2 (acty) 2 (bpp) 2 (O)]·3.5H 2 O} n 4 , {[Ag 4 (acty) 2 (bpp) 4 ](NO 3 ) 2 ·8H 2 O} n 5 , {[Ag(acty)(4,4’-bipy)]·2H 2 O} n 6 have been synthesized in the presence of N-donor ligands (Hacty = N -acetyl- L -tyrosine, phen = 1,10-phenanthroline, bpp = 1,3-di(4-pyridyl)propane, 4,4’-bipy = 4,4’-bipyridine). Compound 1 shows a 0D structure in the presence of phen. Compounds 2 and 3 are isostructural 1D right-hand helical chains via flexible bpp ligand. Compound 4 features a 1D double-chain structure and 5 displays a 2D (6,6)-connected grid network also by bpp ligand. Compound 6 displays a 1D single-chain structure by rigid 4,4’-bipy ligand. Compound 1 , 2 and 5 are further extended into 3D supramolecular architectures through hydrogen-bonding interactions. Compounds 4 and 6 are further linked by hydrogen-bonding interactions into a 2D supramolecular layer. Circular dichroism and luminescent properties of compounds 1 − 6 were investigated at room temperature. Our results highlight the frameworks and luminescent properties can be controlled via adjusting ancillary N-donor ligands and metal centers.