polyoxometalate-catalyzed ethylene epoxidationhydrogen peroxideSummary This chapter contains sections titled: Introduction Computational Details Methods Models Results and Discussion Mechanism of the Olefin Epoxidation Catalyzed by the Lacunary POM, [ γ- (SiO 4 ) W 10 O 32 H 4 ] 4− (1) Formation...
The structure-directing influence of the Ln cations on the emerging POM architectures is investigated in detail. Photoluminescence of Eu-1, Eu-2, Eu-3 and Tb-1 can be ascribed to the characteristic emissions of the EuIII and TbIII cations, respectively. The electrochemical properties of all ...
The syntheses and structures of hafnium(iv) and zirconium(iv) complexes with Keggin tri-lacunary polyoxometalates (POM) [A-alpha-PW(9)O(34)](9-), i.e., (Et(2)NH(2))(7)H(2)[Hf(3)(micro-OH)(3)(A-alpha-PW(9)O(34))(2)].11H(2)O (Et(2)NH(2)-) and (Et(2)NH(2)...
Further, it is the first time that an organosilane attached to lacunary POM, then metalated with Cu and finally encapsulated into CS has been investigated for drug delivery. The antibacterial activity of POM inserted with organosilane and nanohybrid have been tested against bacterial strains of B. ...
The lacunary polyoxometalate (LPOM) encapsulated into the hexagonal mesoporous silica matrix materials were successfully prepared via a directly synthesis method by adjusting pH of the preparation system from 2.0 to 6.0. The materials were characterized by X-ray diffraction, Fourier transform infrared ...
In this work, a ternary magnetic nanocomposite based on the MIL-101(Cr) metal鈥搊rganic framework hybridized with lacunary Keggin-type polyoxometalate (伪-K8SiW11O39路13H2O; LPOM) and cobalt ferrite nanoparticles (CoFe2O4; CFO) as a magnetic component was synthesized through a hydrothermal ...
The simultaneous presence of a number of SERS vibrational bands which can be assigned to vibrational modes of the POM molecule suggests that its overall structure is intact upon adsorption. Based on the SERS observations, a bonding between the penta-dentate aperture of the POMs and the Ag NP ...
In this work, we report the synthesis of organic-inorganic hybrids based on a lacunary POM and pyridyl ligands in organic media.Chifeng LiKosuke SuzukiNoritaka Mizuno日本化学会春季年会講演予稿集
Formation of the composite films is due to chemical grafting of organic silanol groups to the surface oxygen atoms at the vacant sites of [Xn+W11O39](12-n)-, resulting in the saturation of the surface of the lacunary POM. Therefore, a coordination structural model of the films was ...
The century-old inverted Keggin ion has been revisited in an effort to unleash its potential in the structural engineering and functional development of polyoxomolybdates (POMos). Over the past hundred years, attempts to program the metal–oxo scaffold of inverted Keggins have been conducted ...