Two multi-dimensional frameworks constructed from zinc coordination polymers with pyridine carboxylic acids
- Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004 (China)
Two novel zinc coordination polymers [Zn{sub 2}(H{sub 2}O)L(MoO{sub 4})]{sub n} (1) and [Zn{sub 4}(PO{sub 4}){sub 2}L'(H{sub 2}O)]{sub n} (2) (H{sub 2}L=2,2'-bipyridine-6.6'-dicarboxylic acid, H{sub 2}L'=2,2'-bipyridine-4,4'-dicarboxylic acid) have been hydrothermally synthesized and characterized by elemental analyses, IR spectra, UV spectra, single-crystal X-ray diffraction and thermogravimetric analyses. Structural analyses indicate that 1 represents a 2-D sheet structure built by dimeric [Zn{sub 2}L(H{sub 2}O)]{sup 2+} units and MoO{sub 4}{sup 2-} groups whereas 2 displays an interesting 3-D framework constructed by tetranuclear zinc clusters, L'{sup 2-} ligands and PO{sub 4}{sup 3-} groups. Examination of UV spectra suggests that both 1 and 2 can stably exist in the pH range of 2.45-5.45 and 3.01-8.55 in aqueous solution, respectively. The room-temperature solid-state photoluminescence of 1 and 2 are derived from the intra-ligands {pi}-{pi}* transitions of H{sub 2}L and H{sub 2}L' ligands and the ligand-to-metal-charge-transfer transitions. - Graphical Abstract: Two new transition metal coordination polymers, namely, [Zn{sub 2}(H{sub 2}O)L{sub 1}(MoO{sub 4})]{sub n} (1), [Zn{sub 4}(PO{sub 4}){sub 2}L{sub 2}(H{sub 2}O)]{sub n} (2) (H{sub 2}L{sub 1}=2,2'-bipyridine-6,6'-dicarboxylic acid, H{sub 2}L{sub 2}=2,2'-bipyridine-4,4'-dicarboxylic acid) have been hydrothermally synthesized. 1 represents a 2-D sheet structure while 2 represents 3-D network. Highlights: {yields}Two new transition metal coordination polymers have been hydrothermally synthesized. > The two compounds have been characterized by elemental analyses, IR, UV spectra, single-crystal X-ray diffraction, thermogravimetric analyses and photoluminescence. > Compound 1 represents a 2-D sheet structure while 2 represents 3-D network.
- OSTI ID:
- 21580086
- Journal Information:
- Journal of Solid State Chemistry, Vol. 184, Issue 11; Other Information: DOI: 10.1016/j.jssc.2011.09.030; PII: S0022-4596(11)00523-8; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AQUEOUS SOLUTIONS
BIPYRIDINES
DICARBOXYLIC ACIDS
HYDROTHERMAL SYNTHESIS
INFRARED SPECTRA
LIGANDS
MOLYBDATES
MONOCRYSTALS
PHOSPHATES
PHOTOLUMINESCENCE
POLYMERS
PYRIDINE
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENTS
ULTRAVIOLET SPECTRA
WATER
X-RAY DIFFRACTION
ZINC
AZINES
CARBOXYLIC ACIDS
CHEMICAL ANALYSIS
COHERENT SCATTERING
CRYSTALS
DIFFRACTION
DISPERSIONS
ELEMENTS
EMISSION
GRAVIMETRIC ANALYSIS
HETEROCYCLIC COMPOUNDS
HOMOGENEOUS MIXTURES
HYDROGEN COMPOUNDS
LUMINESCENCE
METALS
MIXTURES
MOLYBDENUM COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHOTON EMISSION
PYRIDINES
QUANTITATIVE CHEMICAL ANALYSIS
REFRACTORY METAL COMPOUNDS
SCATTERING
SOLUTIONS
SPECTRA
SYNTHESIS
THERMAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS