Mohapatra, Sudip ; Vayasmudri, Sameer ; Mostafa, Golam ; Maji, Tapas Kumar (2009) Lanthanide (LaIII/HoIII)-oxalate open framework materials formed by in situ ligand synthesis Journal of Molecular Structure, 932 (1-3). pp. 123-128. ISSN 0022-2860
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Official URL: https://www.sciencedirect.com/science/article/abs/...
Related URL: http://dx.doi.org/10.1016/j.molstruc.2009.05.055
Abstract
Two new lanthanide-organic open framework materials, {La(ox)0.5(µ-OH)2(µ-H2O)(H2O)2}n (1) and {[Ho(ox)1.5(H2O)3](en)}n (2) (ox = oxalate dianion and en = ethylenediamine) have been synthesized and structurally characterized. Both the frameworks obtained from in situ synthesis of oxalate ligand from dicarboxylic acid (2,5-dihydroxyterephthalic acid for 1 and tetrabromoterephthalic acid for 2) and lanthanide ions (LnIII) at high temperature. The probable route to the formation of oxalate ligand is the decarboxylation from the corresponding dicarboxylic acid and consecutive reductive coupling catalyze by the corresponding LnIII ions. Compound 1 is a 3D framework formed by pillaring of the oxalate ligand to two dimensional La–O–La inorganic layers, resulting 1D channels along the b-axis. Compound 2 is a 2D honeycomb like oxalate bridged framework of HoIII templated by the en molecules.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | LaIII-Complex; HoIII-Complex; Oxalate Bridge; In Situ Ligand Synthesis; Open Frameworks |
| ID Code: | 114582 |
| Deposited On: | 30 May 2018 10:10 |
| Last Modified: | 30 May 2018 10:10 |
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