Dual-Ligand-Regulated Tb-Containing Antimonotungstate for the Heterogeneous Catalytic Synthesis of N-Heterocycles in Ethanol
A novel Tb<sup>3+</sup>-containing antimonotungstate, [(CH<sub>3</sub>)<sub>2</sub>NH<sub>2</sub>]<sub>3</sub>Na<sub>18</sub>[Tb<sub>4</sub>(mal)<sub>2</sub>(OAc)(W<sub>6</sub>O<sub>13</sub>)(SbW<sub>9</sub>O<sub>33</sub>)<sub>4</sub>(H<sub>2</sub>O)<sub>15</sub>]·47H<sub>2</sub>O, regulated by dl-malic acid and acetic acid (<b>Tb</b><sub><b>4</b></sub><b>mal</b><sub><b>2</b></sub>, H<sub>3</sub>mal = malic acid; HOAc = acetic acid), has been successfully synthesized. The structural analysis reveals that the polyanion of <b>Tb</b><sub><b>4</b></sub><b>mal</b><sub><b>2</b></sub> consists of four {B-α-SbW<sub>9</sub>O<sub>33</sub>} units interconnected by a decanuclear metal cluster {Tb<sub>4</sub>W<sub>6</sub>(mal)<sub>2</sub>(OAc)}. The flexible malic acid ligands involved in the coordinating process create a certain torsion angle, resulting in a twisted rectangular structure of polyanion <b>Tb</b><sub><b>4</b></sub><b>mal</b><sub><b>2</b></sub>. In addition, <b>Tb</b><sub><b>4</b></sub><b>mal</b><sub><b>2</b></sub> exhibits excellent heterogeneous catalytic activity for the synthesis of 3,4-dihydro-2<i>H</i>-1,2,4-benzothiadiazine-1,1-dioxides through the condensation reaction of 2-aminobenzenesulfonamide and benzaldehydes under environmentally benign reaction conditions.
Authors
- Guo‐Ping Yang (ORCID: https://orcid.org/0000-0002-4891-2290)
- Lu‐Ying Jiao
- Wei Xia (ORCID: https://orcid.org/0000-0001-8820-5833)
- Hongfei Wang (ORCID: https://orcid.org/0009-0000-9354-0361)
- Xiaohong Cao (ORCID: https://orcid.org/0000-0002-7991-4336)
- Fuhua Zhang (ORCID: https://orcid.org/0000-0003-0161-6141)
- Jiawei Cao
Institutions
- Huanggang Normal University (CN)
- Catalytic Materials (United States) (US)
- East China University of Technology (CN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-06-18
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c01387
- Citations
- 3
- Primary Topic
- Polyoxometalates: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.55
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangxi Province