Self-Assembly of 1D to 3D Cadmium Complexes: Structural Characterization and Properties

✍ Scribed by Xing Li; Rong Cao; Wenhua Bi; Daqiang Yuan; Daofeng Sun

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 410 KB
• Volume: 2005
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200400983

✦ Synopsis

Abstract

Self‐assembly reactions of 5‐sulfoisophthalic monosodium salt (NaH~2~sipa), Cd(NO~3~)~2~·4H~2~O and 2,2'‐bipyridine (or 4,4'‐bipyridine) under hydrothermal condition give rise to four polymeric complexes, namely {[Cd~3~(sipa)~2~(2,2'‐bpy)~4~(H~2~O)~2~]·6H~2~O}~n~ (1), {[Cd(sipa)(H‐4,4'‐bpy)(H~2~O)]·2H~2~O}~n~ (2); {[Cd~2~(sipa)(4,4'‐bpy)~3~(H~2~O)~3~]·[Cd(sipa)(4,4'‐bpy)(H~2~O)]·8H~2~O}~n~ (3),and {[Cd~3~(sipa)~2~(4,4'‐bpy)~4~(H~2~O)~2~]·3H~2~O}~n~ (4), respectively. X‐ray diffraction analyses reveal that complex 1 possesses a 1D rail‐like chain structure, 2 is a 1D double chain, 3 has a 2D network consisting of an independent [Cd~2~(sipa)(4,4'‐bpy)~3~(H~2~O)~3~]~n~^n^^+^ cationic layer and a [Cd(sipa)(4,4'‐bpy)(H~2~O)]~n~^n^^–^ anionic layer, and 4 is a novel 3D self‐penetrating network constructed from two mixed bridging ligands. Thermogravimetric analyses (TGA) and fluorescent measurements of complexes 1–4 have also been performed. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)