Synthesis of Fluoro-Bridged Ho3+ and Gd3+ 1,3,5-Tris(4-carboxyphenyl)benzene Metal-Organic Frameworks from Perfluoroalkyl Substances

Simin Sheybani; Muhammad Abbas; Hamid R Firouzi; Zhifeng Xiao; Hong-Cai Zhou; Kenneth J Balkus Jr

doi:10.1021/acs.inorgchem.2c04470

Synthesis of Fluoro-Bridged Ho³⁺ and Gd³⁺ 1,3,5-Tris(4-carboxyphenyl)benzene Metal-Organic Frameworks from Perfluoroalkyl Substances

Inorg Chem. 2023 Mar 13;62(10):4314-4321. doi: 10.1021/acs.inorgchem.2c04470. Epub 2023 Mar 1.

Authors

Simin Sheybani¹, Muhammad Abbas¹, Hamid R Firouzi¹, Zhifeng Xiao², Hong-Cai Zhou², Kenneth J Balkus Jr¹

Affiliations

¹ Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States.
² Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States.

PMID: 36857778
DOI: 10.1021/acs.inorgchem.2c04470

Abstract

A new fluoro-bridged rare-earth (RE) metal-organic framework consisting of 15-connected nonanuclear and 9-connected trinuclear clusters {[RE₉-(μ₃-F)₁₄(H₂O)₆][RE₃(μ₃-F)(H₂O)₃](HCO₂)₃-(BTB)₆}·(solvent)x 2 (RE = Ho³⁺ and Gd³⁺) was synthesized through the transformation of a dimeric complex formulated as bis(2,2'-bipyridine)tetrakis(μ-2-fluorobenzoato-O,O')-bis(2-fluorobenzoato)diRE(III) 1 with the bridging linker 1,3,5-tris(4-carboxyphenyl)benzene (H₃BTB). The rare-earth metal ions Ho³⁺ and Gd³⁺ were also found to remove fluorine from other organo-fluorine compounds such as perfluorohexanoic acid (PFHxA) and perfluorooctanoic acid (PFOA), resulting in the new fluoro-bridged RE-MOFs.