Two lead(II) 2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate complexes exhibiting different topologies and fluorescent properties
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Chemical Engineering of Guangxi Normal University, Yucai Road 15, Guilin 541004 (China)
The reactions of PbCl{sub 2} with 2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid (H{sub 3}iso) gave two complexes [Pb(H{sub 2}iso){sub 2}(H{sub 2}O)]{sub n} (1) and [Pb(Hiso)(H{sub 2}O)]{sub n} (2), which were characterized by IR spectroscopy, elemental analysis, thermogravimetric analysis, powder X-ray diffraction and single crystal X-ray diffraction analysis. The two complexes display different topologies. 1 shows a three-dimensional framework with the Schlaefli symbol (4.8{sup 5})(4.8{sup 2}) no matter if the weak Pb-O bonds are included or not. However, 2 presents a 3,3-connected two-dimensional sheet with the Schlaefli symbol (4.8{sup 2})(4.8{sup 2}) based on the calculation of only the normal Pb-O bonds and a 5,5-connected 3D network with the Schlaefli symbol (4{sup 15}.6{sup 4})(4{sup 4}.6{sup 8}.8{sup 2}) when the weak Pb-O bonds are also included. The fluorescent studies reveal an emission attributed to intraligand emission for 1 and an emission assigned to LMCT for 2. -- Graphical abstract: The reactions of PbCl{sub 2} with 2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid (H{sub 3}iso) gave two complexes [Pb(H{sub 2}iso){sub 2}(H{sub 2}O)]{sub n} (1) and [Pb(Hiso)(H{sub 2}O)]{sub n} (2), which display different topologies and fluorescent properties. Display Omitted Highlights: {yields} Two Pb(II) complexes were prepared from the reactions of PbCl{sub 2} with the same ligand. {yields} The two title complexes display different topologies. {yields} Both normal and weak Pb-O bonds are discussed in the manuscript.{yields} The title two complexes show different fluorescent properties.
- OSTI ID:
- 21494277
- Journal Information:
- Journal of Solid State Chemistry, Vol. 184, Issue 5; Other Information: DOI: 10.1016/j.jssc.2011.03.031; PII: S0022-4596(11)00128-9; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
Similar Records
Three-dimensional (3-D) metal-organic frameworks with 3-pyridin-4-yl-benzoate defining new (3,6)-connected net topologies
Three Pb{sup II} coordination polymers based on 2-(pyridin-2-yl)-1H-imidazole-4,5-dicarboxylic acid: Syntheses, crystal structures, and fluorescent properties
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBOXYLIC ACIDS
CRYSTAL STRUCTURE
FLUORESCENCE
INFRARED SPECTRA
LEAD CHLORIDES
LEAD COMPLEXES
LIGANDS
MONOCRYSTALS
POWDERS
SHEETS
THERMAL GRAVIMETRIC ANALYSIS
TOPOLOGY
WATER
X-RAY DIFFRACTION
CHEMICAL ANALYSIS
CHLORIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
COMPLEXES
CRYSTALS
DIFFRACTION
EMISSION
GRAVIMETRIC ANALYSIS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
LEAD COMPOUNDS
LEAD HALIDES
LUMINESCENCE
MATHEMATICS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHOTON EMISSION
QUANTITATIVE CHEMICAL ANALYSIS
SCATTERING
SPECTRA
THERMAL ANALYSIS