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An unprecedented cobalt(II)-containing Wells–Dawson-type tungstovanadate-based metal–organic framework as an efficient catalyst for ring-opening polymerization of ε-caprolactone.
- Source :
- CrystEngComm; 6/7/2020, Vol. 22 Issue 21, p3656-3663, 8p
- Publication Year :
- 2020
-
Abstract
- By utilizing a flexible fluorinated bis(triazole) ligand 1,4-bis(1,2,4-triazole-1-ylmethyl)-2,3,5,6-tetrafluorobenzene (Fbtx), a thermally and chemically stable cobalt(II)-containing tungstovanadate-based metal–organic framework (MOF) {[Co<subscript>3</subscript>(Fbtx)<subscript>5</subscript>(V<subscript>2</subscript>W<subscript>18</subscript>O<subscript>62</subscript>)(H<subscript>2</subscript>O)<subscript>2</subscript>]·26H<subscript>2</subscript>O}<subscript>n</subscript> (denoted as CZU-5) was synthesized and structurally characterized. The X-ray structural analysis revealed that CZU-5 features a three-dimensional (3-D) self-penetrated α-polonium cubic structure, which results from a 3-D 4-fold interpenetrated diamondoid [Co(Fbtx)]<subscript>n</subscript> network connected by the Wells–Dawson-type tungstovanadate clusters. Unexpectedly, the introduction of vanadium atoms as heteroatoms into the Dawson-type anion in polyoxometalate (POM)-based coordination polymers has not been reported to date. For the first time, the POM-based material was demonstrated to be an effective catalyst for the solvent-free ring-opening polymerization of ε-caprolactone. Moreover, the CZU-5 catalyst could be recycled up to five times with the retention of both catalytic activity and crystal structure. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 22
- Issue :
- 21
- Database :
- Complementary Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 143524588
- Full Text :
- https://doi.org/10.1039/d0ce00309c