ELECTROLYTE FOR ELECTROLYTIC CAPACITOR, ELECTROLYTIC CAPACITOR AND PROCESS FOR PRODUCING TETRAFLUOROALUMINATE SALT OF ORGANIC ONIUM
申请人:Takeda Masayuki
公开号:US20070188977A1
公开(公告)日:2007-08-16
There are provided an aluminum electrolytic capacitor comprising an anode, a cathode comprising aluminum and an electrolytic solution containing an onium salt of fluorine-containing anion, wherein the electrolytic solution has a water concentration of 1% by weight or less, or wherein the cathode has a peak top of Al2p spectrum of 74.0 to 75.8 eV as measured by a method in which the surface of the cathode in the aluminum electrolytic capacitor heated at 125° C. for 50 hours is analyzed by X-ray photoelectron spectroscopy (XPS); an electrolytic solution for electrolytic capacitor comprising a quaternary cyclic amidinium tetrafluoroaluminate and a solvent and containing specific impurity compounds in a total amount of 0.6% by weight or less, and an electrolytic capacitor using the electrolytic solution; and a method for preparing an organic onium tetrafluoroaluminate which is advantageously used in an aluminum electrolytic capacitor.
Intramolecular nitrogen ligand stabilization of phenyl-imidazolidine derived silicon species
作者:Robert J.P Corriu、Andreas Mix、Gérard F Lanneau
DOI:10.1016/s0022-328x(98)00815-8
日期:1998.11
functional aminoarylsilanes with the aromatic ring substituted in the ortho-position by a 2-(1,3-dimethyl)imidazolidine ligand is presented. The donating properties of the imidazolidine fragment, in which the two coordinating nitrogen atoms are located on the same side of the silicon center induce a specific chemical behavior of the organosilicon species. Thus, only one Si–H bond of ArSiH3 was found