Synthesis, Characterization and Photophysical Properties of Novel Dinuclear Silver(I) and Mononuclear Palladium(II) Complexes with 1,2-Bis[(anthracen-9-ylmethyl)amino]ethane

✍ Scribed by Guo-qi Zhang; Guo-qiang Yang; Lan-ying Yang; Qing-qi Chen; Jin-Shi Ma

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 238 KB
• Volume: 2005
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200400926

✦ Synopsis

Abstract

Silver(I) (3) and palladium(II) (4) complexes of 1,2‐bis[(anthracen‐9‐ylmethyl)amino]ethane have been synthesized and structurally characterized. X‐ray crystal structure analysis reveals that compound 3 exists as a dinuclear tris(ligand) complex with formula [Ag~2~(2)~3~]**·2NO~3~, in which each silver center is three‐coordinate to form a slightly distorted planar‐trigonal geometry with three nitrogen donors originating from two distinct ligands. Compound 4, on the other hand, is a mononuclear bis(ligand) complex with formula [Pd(2)~2~]·2OAc, in which the palladium center is four‐coordinate with four nitrogen donors originating from two distinct ligands to form a square‐planar geometry. In crystals of both 3 and 4 strong intermolecular edge‐to‐face C–H···**π packing interactions are observed, which contribute to stabilize the crystalline solid. Studies of the photophysical properties of these compounds (3, 4, and ligand 2) show apparent fluorescence quenching effect by introduction of metal ions and likely “excimer” emission of anthracene in the crystalline solid. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)