Results 11 to 20 of about 6,221 (196)
The complex stacking disorder of Fe- and Ru-based 1,1'-(3,6-pyrazabolyl)metallocenes. [PDF]
Acta Crystallogr B Struct Sci Cryst Eng MaterThe ferrocene Fc(BHpz)2 and the ruthenocene Rc(BHpz)2 belong to the same order–disorder (OD) polytype family and feature a complex stacking disorder, with different ordered and disordered domains in the same crystal.1,1′‐(3,6‐Pyrazabolyl)ferrocene [Fc(BHpz)2] and the corresponding ruthenocene [Rc(BHpz)2] crystallize as order–disorder (OD) structures ...
Stöger B, Virovets A, Wenisch M.
europepmc +2 more sources
TEMPO in Solution, Melted, Solid, and Adsorbed on a Silica Surface: A Paramagnetic NMR Study. [PDF]
ChemistryParamagnetic species can often be measured with EPR and NMR spectroscopy. This is demonstrated using the important radical TEMPO. All 1H and 13C NMR signals of TEMPO could be recorded and assigned. The impact of TEMPO on the chemical shifts of solvent signals and a phosphine is described.
Shakeri E +4 more
europepmc +2 more sources
Metallocene Coordination to Neutral Alkaline Earth Metal Complexes. [PDF]
Chem Asian JReactions between a series of geometrically constrained, Lewis acidic group 2 metal diamide complexes, and first row transition metal metallocenes have given a range of adducts in which the metallocene coordinates to the group 2 metal center through one of its cyclopentadienyl rings.
Parr JM, Mullins J, Evans MJ, Jones C.
europepmc +2 more sources
Photo-induced catalytic C−H heteroarylation of group 8 metallocenes
Cell Reports Physical Science, 2022 Summary: Possessing a characteristic sandwich-type structure, metallocenes have been widely used by the chemistry community. However, the direct catalytic C−H heteroarylation of metallocenes still remains underexplored.
Gu-Cheng He +7 more
doaj +1 more source
Chemical Properties of Metallocene-Filled Carbon Nanotubes to Tailor Toxicity in Plants
Biology and Life Sciences Forum, 2023 Metallocenes are toxic chemicals that are used for the growth of carbon nanotubes (CNTs). The study of the toxicity of metallocenes on plants is very important. It governs the issues of genetics.
Marianna V. Kharlamova
doaj +1 more source
Ionization of Decamethylmanganocene: Insights from the DFT-Assisted Laser Spectroscopy
Molecules, 2022 Metallocenes represent one of the most important classes of organometallics with wide prospects for practical use in various fields of chemistry, materials science, molecular electronics, and biomedicine.
Sergey Ketkov +3 more
doaj +1 more source
Transition Metal–(μ-Cl)–Aluminum Bonding in α-Olefin and Diene Chemistry
Molecules, 2022 Olefin and diene transformations, catalyzed by organoaluminum-activated metal complexes, are widely used in synthetic organic chemistry and form the basis of major petrochemical processes.
Ilya E. Nifant’ev +2 more
doaj +1 more source
Molecules, 2023 Syndiotactic polystyrene (SPS) refers to a type of thermoplastic material with phenyl substituents that are alternately chirally attached on both sides of an aliphatic macromolecular main chain.
Bo Wen +5 more
doaj +1 more source
Ti Group Metallocene-Catalyzed Synthesis of 1-Hexene Dimers and Tetramers
Molecules, 2021 1-Hexene transformations in the catalytic systems L2MCl2–XAlBui2 (L = Cp, M = Ti, Zr, Hf; L = Ind, rac-H4C2[THInd]2, M = Zr; X = H, Bu i) and [Cp2ZrH2]2-ClAlR2 activated by MMAO-12, B(C6F5)3, or (Ph3C)[B(C6F5)4] in chlorinated solvents (CH2Cl2, CHCl3, o ...
Pavel V. Kovyazin +5 more
doaj +1 more source
ChemistryOpen, 2021 Recently published reactions of group 4 metallocene bis(trimethylsilyl)acetylene (btmsa) complexes from the last two years are reviewed. Complexes like Cp’2Ti(η2‐Me3SiC2SiMe3) and Cp2Zr(py)(η2‐Me3SiC2SiMe3) with Cp’ as Cp (cyclopentadienyl) and Cp ...
Prof. Uwe Rosenthal
doaj +1 more source