Hydrothermal synthesis and structure of a 2D supramolecular framework with right- and left-helices based on mixed ligands

✍ Scribed by Lufang Ma; Liya Wang; Yongwei Wang; Jiangliang Hu

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 221 KB
• Volume: 43
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200800001

✦ Synopsis

Abstract

An exploration of the cobalt‐OH‐BDC‐bpp system under hydrothermal conditions, has led to the isolation of a novel framework [Co(OH‐BDC)(bpp)~0.5~(H~2~O)]~n~ (OH‐BDC = 5‐hydroxyisophthalic acid, bpp = 1,3‐bi(4‐pyridyl)propane). Single‐crystal X‐ray analysis reveals that it crystallizes in the monoclinic space group P2~1~/n. a = 10.235(8) Å, b =17.882(14) Å, c = 14.291(11) Å, β = 92.107(9)°.The cobalt ions are linked into an extended helical chain via OH‐BDC and mono‐coordinated bpp ligands through hydrogen‐bonding interactions. Further these helical chains are united together through the bridging bpp to form a 2D layer and the adjacent chains possess the opposite chirality. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)