منابع مشابه
Developments of chiral metallocenes as polymerization catalysts.
This review article describes developments in chiral metallocenes as polymerization catalysts focusing on C2 symmetric ansa-zirconocene complexes. Selective synthesis of rac-isomers of ansa-zirconocenes are surveyed. Isospecific polymerizations of propylene catalyzed by chiral zirconocenes are summarized. Advanced series of polymerizations by chiral metallocenes such as asymmetric polymerizatio...
متن کاملNew ionic half-metallocenes of early lanthanides
We present in this study a new and one-step method allowing the preparation of an unprecedented family of stable half-lanthanidocenes. X Ray analysis shows that the isolated compounds all display the same ionic Ln-Mg bimetallic structure consisting of two anionic (Cp)Ln(BH4)3 species and one cationic Mg(THF)6 (Cp = C5Me5, Ln = Nd, 1a, Ln = La, 1b; Cp = C5H5, Ln = Nd, 2a; Cp = C5H2Ph3, Ln = Nd, ...
متن کاملNovel potent metallocenes against liver stage malaria.
Novel conjugates of the antimalarial drug primaquine (compound 1) with ferrocene, named primacenes, have been synthesized and screened for their activities against blood stage and liver stage malaria in vitro and host-vector transmission in vivo. Both transmission-blocking and blood-schizontocidal activities of the parent drug were conserved only in primacenes bearing a basic aliphatic amine gr...
متن کاملCoordination Chemistry of Disilylated Germylenes with Group 4 Metallocenes
Reaction of the PEt3 adduct of a disilylated five-membered cyclic germylene with group 4 metallocene dichlorides in the presence of magnesium led to the formation of the respective germylene metallocene phosphine complexes of titanium, zirconium, and hafnium. Attempts to react the related NHC adduct of a disilylated four-membered cyclic germylene under the same conditions with Cp2TiCl2 did not ...
متن کاملPhotooxidation of some metallocenes in a polymer matrix.
The changes in the electronic absorption spectra (UV-Vis) of some metallocene-doped poly(methyl methacrylate) (PMMA) thin films containing chloroform molecules as impurities were studied after photoexcitation in the nitrogen atmosphere. Photoexcitations were made by monochromatic radiation (using a Xe-lamp source and a monochromator) at an interval of few nanometers in the spectral range 210-75...
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ژورنال
عنوان ژورنال: Molecules
سال: 2019
ISSN: 1420-3049
DOI: 10.3390/molecules24030486