Chen, Yanhong; Chang, Shenzhen; An, Haiyan; Li, Yanqin; Zhu, Qingshan; Luo, Huiyun; Huang, Yaohui published the artcile< Two Polymorphic Polyoxometalate-Based Metal-Organic Frameworks for the Efficient Synthesis of Functionalized Sulfoxides and Detoxification of Mustard Gas Simulants>, Electric Literature of 699-12-7, the main research area is zinc bipyridine polyoxometalate MOF preparation crystal structure oxidation catalyst; XPS zinc bipyridine polyoxometalate MOF.
The development of high-efficient catalysts for the oxidation reaction of sulfides received much attention in recent years due to the extensive applications of such reactions from the utility in pharmaceutical chem. and biol. to the detoxification of chem. warfare agents in war. Herein, the authors report two innovative polyoxometalate-based metal-organic frameworks (POMOFs) {[ε-PMoV8MoVI4O37(OH)3][Zn2(C10N2H8)(H2O)2]2}2·8H2O (1-α and 1-β), which were characterized by elemental anal., UV-visible diffuse reflectance spectroscopy, x-ray single-crystal and powder diffraction, XPS, and FTIR spectroscopy techniques. Single-crystal x-ray diffraction anal. indicates that 1-α and 1-β are polymorphic with the identical compositions and analogical structures. Compounds 1-α and 1-β are both connected by Zn4-ε-Keggin polyoxoanions and 4,4′-bipyridine (bpy) ligands to form twofold interpenetrated three-dimensional POMOF structures. 1-β can be seen as a rotational polymorph of 1-α, i.e., 1-α takes the b axis as the rotation axis and rotates ~39° clockwise to obtain 1-β. Both compounds 1-α and 1-β can be used as heterogeneous catalysts to catalyze the selective oxidation of multitudinous sulfides with H2O2 as an oxidant. When the oxidation of Me Ph sulfide was used as the template reaction, the yield of Me Ph sulfoxide is ∼100% within 30 min by 1-α and 1-β and the oxidant use efficiency is >93%. Gratifying catalytic effects also were achieved in the selective oxidation of Ph and aliphatic sulfide derivatives Simultaneously, both 1-α and 1-β showed an extraordinary degradation efficiency of 2-chloroethyl Et sulfide and have a half lifetime (t1/2) ∼2.5 or 3 min, resp., with 100% selectivity toward the nontoxic product 2-chloroethyl Et sulfoxide and an abnormally high oxidant use efficiency (94.5% for 1-α and 94.3% for 1-β) at room temperature In addition, after seven cycles and continuous cycle catalytic experiments, their structures remained and catalytic activities did not decrease obviously, revealing their outstanding recyclability and structural stability.
ACS Sustainable Chemistry & Engineering published new progress about Crystal structure. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Electric Literature of 699-12-7.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts