the stereospecific polymerization of conjugated dienes began in 1954 with the first catalysts obtained by combining ticl4 or ticl3 with aluminum-alkyls, i.e. the catalytic systems previously employed for ethylene and propylene polymerizations. subsequently, many other catalytic systems were obtained and examined by a combination of transition metal or lanthanide compounds with appropriate alkyl...

Biomedical inorganic chemistry is a relative new research field and investigates possible applications of metal containing agents which display biological activities!,2. An important part of these studies deals with compounds that display antitumor properties. The most successful anticancer drug to date containing a transition metal is cisplatin, [Pt(NH3)2Ch]3. The bioactivity of organometallic...

A range of 1,3-di(metallocenyl)allylium salts [Mc(CH)(3)Mc'](+)[X](-) [Mc, Mc' = ferrocenyl (Fc), 2,3,4,5,1',2',3',4'-octamethylferrocen-1-yl (Fc' '), ruthenocenyl (Rc); X = BF(4), PF(6)] was synthesized by reaction of (2-lithiovinyl)metallocenes with formylmetallocenes, followed by treatment of the resulting alcohols with HX. Two salts with X = BAr'(4) [Ar' = 3,5-(CF(3))(2)C(6)H(3)] were synth...

Abstract Derivatives of fused 1,2,4-triazines containing heterocyclic and metallocene fragments were obtained by one-pot oxidative cyclization hydrazones in the presence hypervalent iodine(III) reagents. For 1,2,4-triazolo[4,3-a]azines, ability to activate HSF1 was investigated. The compounds shown increase degree activation. It that can be used induce Hsp70 expression decrease extent mutant HT...

The impact of the hoop size on electronic and charge transport properties [5]- [4]-cyclo-N-butyl-2,7-carbazoles is reported. In these examples, a small nanohoop beneficial for good organization molecules into thin films, whereas large one increases density structural defects. More information can be found in Research Article by C. Poriel co-workers (DOI: 10.1002/chem.202300934).