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Influence of pH on the structures of two Cd phosphonate compounds
- Source :
- Journal of Chemical Sciences. 132
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- Two novel Cd-based coordination polymers Cd(H2BCP)2(phen)2 1 and {[Cd6(BCP)4(phen)3]·2H2O}n 2 (Phen=1,10-phenanthroline) have been hydrothermally synthesized from a combination of 4-(phosphonomethyl) benzoic acid 4-HOOCC6H4CH2PO3H2 (H3BCP) and 1,10-phenanthroline. The X-ray crystal structure analyses revealed that 1 is a 0D mononuclear molecular structure and 2 is a 3D structure existing the novel Cd6 cluster unit. It is worth mentioning that 1 and 2 have the same constitutional units, namely the Cd ion, H3BCP ligand and second ligand- Phen. However, their structures are different and it results from the different solution pH value. In order to explore the structural characteristics, FTIR, photo-luminescent and solid UV-Vis spectra are employed. Synthesis and properties of two novel Cd-based coordination polymers Cd(H2BCP)2(phen)2 1 and {[Cd6(BCP)4(phen)3]·2H2O}n 2 are reported. It is worth mentioning that 1 is zero-dimensional structure and forms super-molecular layers via O–H···O under the condition of solution pH = 2.1, 2 is a three-dimensional framework and contains the novel Cd6 cluster unit under the condition of solution pH = 5. So controlling the pH of the solution plays an important role in the structure of the compound.
- Subjects :
- chemistry.chemical_classification
010405 organic chemistry
Ligand
General Chemistry
Polymer
Crystal structure
010402 general chemistry
01 natural sciences
Phosphonate
0104 chemical sciences
chemistry.chemical_compound
Crystallography
chemistry
Cluster (physics)
Molecule
Fourier transform infrared spectroscopy
Benzoic acid
Subjects
Details
- ISSN :
- 09737103 and 09743626
- Volume :
- 132
- Database :
- OpenAIRE
- Journal :
- Journal of Chemical Sciences
- Accession number :
- edsair.doi...........7199be576826a81629786347bd931550