Chelate complexes and processes for their preparation
申请人:Ciba-Geigy Corporation
公开号:US05358940A1
公开(公告)日:1994-10-25
Naphthalocyanine-chelate complexes of formula I ##STR1## are described which contain as central atom M aluminum, gallium, indium, fin, ruthenium or preferably germanium and in which the remaining symbols are as defined in claim 1. The complexes can be used inter alia in the photodynamic chemotherapy of tumors.
AbstractThis work reports on an assembling–calcining method for preparing gold–metal oxide core–satellite nanostructures, which enable surface‐enhanced Raman spectroscopic detection of chemical reactions on metal oxidenanoparticles. By using the nanostructure, we study the photooxidation of Si−H catalyzed by CuO nanoparticles. As evidenced by the in situ spectroscopic results, oxygen vacancies of CuO are
Catalysis by cationic oxorhenium(v): hydrolysis and alcoholysis of organic silanes
作者:Rex A. Corbin、Elon A. Ison、Mahdi M. Abu-Omar
DOI:10.1039/b822783g
日期:——
The cationic [2-(2'-hydroxyphenyl)-2-oxazolinato(-2)]oxorhenium(v) complex promotes oxidative dehydrogenation of organosilanes with water and alcohols in a catalytic manner to give excellent yields of silanols and silyl ethers, respectively. The reactions proceed conveniently under ambient and open-flask conditions with low catalyst loading (
Metal-free visible-light-mediated aerobic oxidation of silanes to silanols
作者:Jing Wang、Bin Li、Li-Chuan Liu、Chenran Jiang、Tao He、Wei He
DOI:10.1007/s11426-018-9289-9
日期:2018.12
Oxidation of silanes into silanols using water/air has attracted considerable attention. The known methods with no exception required a metal catalyst. Herein we report the first metal-free method: 2 mol% Rose Bengal as the catalyst, air (O2) as the oxidant, water as the additive and under visible light irradiation. While this method produces various silanols in a simple, cost-effective, efficient
Metal-free catalytic hydrogen production from a polymethylhydrosilane–water mixture
作者:Chew Pheng Yap、Hwa Tiong Poh、Wai Yip Fan
DOI:10.1039/c5ra23887k
日期:——
Hydrogen gas is the most promising carbon-free energy carrier although its on-demand generation remains a formidable challenge. One of the potential pathways for generating hydrogen is through hydrolytic oxidation of organosilanes. Here, we demonstrate that the hydroxide ion OH− serves as a potent room-temperature metal-free catalyst in the hydrolytic oxidation of polymethylhydrosilane, PMHS to hydrogen