Programmed Helicity in Self-Assembled Hydrogen-Bonded Chains of Chiral Copper(II) Complexes

✍ Scribed by David G. Lonnon; Stephen B. Colbran; Donald C. Craig

• Book ID: 102170141
• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 385 KB
• Volume: 2006
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200501063

✦ Synopsis

Abstract

The copper(II) complexes [Cu(H~2~L^1^)Cl~2~]~2~[CuCl~4~]·CH~3~CN·H~2~O (HL^1^ = N‐6‐(4‐hydroxyphenyl)‐2‐pyridylmethyl‐N,N′,N′‐trimethylethylenediamine), [Cu(HL^2^)Cl~2~] (HL^2^ = N‐4‐hydroxybenzylmethyl‐N,N′,N′‐trimethylethylenediamine)and [Cu~2~(μ‐L^3^)~2~(H~2~O)(ClO~4~)]ClO~4~·H~2~O (HL^3^ = N‐2‐hydroxybenzylmethyl‐N,N′,N′‐trimethylethylenediamine) were prepared and characterised in acetonitrile solution (by ESI‐MS, EPR and UV/Vis‐NIR spectroscopy) and in the solid state (by X‐ray crystallography). Each copper(II) complex is chiral and has a potential inter‐complex hydrogen‐bond donor group. Upon crystallisation, all three copper(II) complexes undergo spontaneous enantioselective self‐assembly into hydrogen‐bond‐linked helices.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)