Three metal–organic coordination compounds based on 4,6-dipyridyl-2-aminopyrimidine: Important role of hydrogen bonding in supramolecular assemblies
✍ Scribed by Ying-Nan Chi; Feng-Yun Cui; Yan-Qing Xu; Chang-Wen Hu
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 942 KB
- Volume
- 875
- Category
- Article
- ISSN
- 0022-2860
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✦ Synopsis
The reactions of divalent metal salts and 4,6-dipyridyl-2-aminopyrimidine ligands gave rise to three metal-organic coordination compounds:
aminopyrimidine] and their crystal structures were determined via single-crystal X-ray diffraction. In the three structures, L1 and L2 both exhibit terminal coordination mode. As the ligands contain both hydrogen bonding donors and acceptors, hydrogen bonding interactions play a crucial role in construction of supramolecular structures. In compound 1, the mono-nuclear complexes were connected to dimer structure by hydrogen bondings; in compound 2, dimer units were constructed through intermolecular hydrogen bondings and the crystallographic water molecules link the dimers into a 1-D supramolecular chain; and in compound 3, a complicated 3-D supramolecular architecture was formed via a series of hydrogen bondings. Moreover, the compounds 1-3 display room-temperature luminescent properties.