Hollow Lindqvist-like-Shaped {V6} Cluster-Based Metal–Organic Framework for the Highly Efficient Detoxification of Mustard Gas Simulant

• Published in: Inorganic chemistry Vol. 60; no. 2; pp. 840 - 845
• Main Authors: Tian, Hong-Rui, Zhang, Zhong, Dang, Tian-Yi, Liu, Shu-Mei, Lu, Ying, Liu, Shu-Xia
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 18.01.2021
• ISSN: 0020-1669; 1520-510X
• DOI: 10.1021/acs.inorgchem.0c02890

A polyoxovanadate-based nickel–organic framework, [Ni­(bib)2]­{V2O6}­({V6}-MOF, bib = 1,4-bis­(1H-imidazoly-1-yl)­benzene), was facilely prepared under gentle hydrothermal conditions and structurally characterized. Single-crystal X-ray diffraction analysis indicates that the {V6} cluster in the {V6}-MOF is constructed of two VO5 tetragonal pyramids and four VO4 tetrahedrons via the apex sharing of O atoms, presenting a hollow Linqvist-like structure, which is different from these reported hexanuclear vanadium clusters. The {V6}-MOF not only expands the structure of polyoxovanadates (POVs) but also catalyzes the rapid detoxification of mustard gas simulant (2-chloroethyl ethyl sulfide, CEES) at 25 °C. The catalytic results were determined by means of GC, GC–MS, and 1H NMR. Using {V6}-MOF as a heterogeneous catalyst, CEES underwent catalyzed oxidation to only nontoxic product 2-chloroethyl ethyl sulfoxide (CEESO) within 40 min, and the conversion and selectivity were almost 100%. In addition, {V6}-MOF exhibits high sustainability, and no obvious reductions in conversion and selectivity are observed after five runs.