Tuning the porosity of lanthanide MOFs with 2,5-pyrazinedicarboxylate and the first in situ hydrothermal carboxyl transfer
Year: 2010
Type: article
Abstract: Reacting lanthanide nitrates with 2,5-pyrazinedicarboxylic acid (2,5-pzdcH2) and oxalic acid (oxH2) hydrothermally at 140 °C yielded a series of MOFs with 1D nano-sized channels, [Ln(2,5-pzdc)(ox)0.5(H2O)2]·4.5H2O (1-Ln; Ln = Nd, Sm, Eu, Gd, Tb, Dy), different from previously reported ultra-microporous [Ln(2,5-pzdc)1.5(H2O)3]·0.5H2O. While the oxalic acid was replaced by other dicarboxylic acids like terephthalic acid, malonic acid, glutaric acid, or pyrazole-3,5-dicarboxylic acid, obtained was a novel series of 1D polymers, [Ln(2,5-pzdc)0.5(2,6-pzdc)(H2O)3] (2-Ln; Ln = Pr, Sm, Eu, Tb; 2,6-pzdc2− = 2,6-pyrazinedicarboxylate), with 2,6-pzdc2− formed in situ by formal carboxyl transfer. This represents the first example of carboxyl transfer either in coordination compounds or in hydrothermal synthesis. The Eu and Tb complexes in these two series emit strong ligand sensitized f–f luminescence.
Source: CrystEngComm
DOI: 10.1039/c0ce00340a
Authors: Bin Cai, Ping Yang, Jing-Wei Dai, Jian-Zhong Wu
Institution: South China Normal University
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2079260592