Results 11 to 20 of about 4,945 (173)

Advantages of Group 4 Metallocene Bis(trimethylsilyl)acetylene Complexes as Metallocene Sources Towards Other Synthetically used Systems [PDF]

open access: yesChemistryOpen, 2019
Active species for synthetic and catalytic applications are formed from well defined complexes or mixtures of compounds. For group 4 metallocenes, three pathways for the formation of the reactive complex fragment [Cp′2M] are known: (i) reductive mixtures
Prof. Dr. Uwe Rosenthal
doaj   +2 more sources

Metallocene Based Polyolefin Nanocomposites [PDF]

open access: yesMaterials, 2014
One of the most efficient and versatile ways to synthesize polyolefin nanocomposites is the in-situ polymerization of olefins in the presence of nano particles by metallocene catalysts. Metallocene/methylaluminoxane (MAO) catalysts are soluble in hydrocarbons and therefore they can be absorbed perfectly in solution onto the surface of particles or ...
Walter Kaminsky
openaire   +3 more sources

The synthesis of metallocene calix[4]arenes

open access: yesJournal of Inclusion Phenomena, 1987
The condensation of 1,1′-bis(chlorocarbonyl)metallocenes andp-tert-butylcalix[4]arene in toluene leads to novel metallocene calix[4]arenes in which the metallocene subunit bridges the opposite hydroxy groups of the parent calixarene.
Beer, P, Keefe, A
openaire   +3 more sources

Use of foliar fertilizers on soybeans in the Republic of Tatarstan

open access: yesBIO Web of Conferences, 2020
In 2018, studies were conducted to assess the impact of foliar feeding with complex fertilizers on the yield and grain quality of two soybean varieties.
Kolesar Valeria   +3 more
doaj   +1 more source

3d Metallocene Anion Data

open access: yes, 2021
Physical and computational characterisation data for an isostructural series of metallocene ...
Mills, D (via Mendeley Data)
core   +3 more sources

Metallocene-Naphthalimide Derivatives: The Effect of Geometry, DFT Methodology, and Transition Metals on Absorption Spectra

open access: yesMolecules, 2023
In the present paper, the photophysical properties of metallocene-4-amino-1,8-naphthalimide-piperazine molecules (1-M2+), as well as their oxidized and protonated derivatives (1−M3+, 1-M2+-H+, and 1-M3+-H+), where M = Fe, Co, and Ni, were studied via DFT
Christina Eleftheria Tzeliou   +1 more
doaj   +1 more source

Copolymerization of ethylene with norbornene by using metallocene/TIBA/B(C6F5)3 system [PDF]

open access: yesPolyolefins Journal, 2023
Cyclic olefin copolymer is a type of high-performance polyolefin material, which is prepared by using a single-site catalyst in solution polymerization. The common activator of this system is alkyl aluminoxane or organic  boron/aluminum system.
Wei Wang   +7 more
doaj   +1 more source

Active site nature of magnesium dichloride-supported titanocene catalysts in olefin polymerization [PDF]

open access: yesPolyolefins Journal, 2015
Heterogeneous Ziegler-Natta and homogeneous metallocene catalysts exhibit greatly different active sitenature in olefin polymerization. In our previous study, it was reported that MgCl2-supported titanocenecatalysts can generate both Ziegler-Natta-type ...
Toshiaki Taniike   +2 more
doaj   +1 more source

Synthesis, Structure and Electrical Resistivity of Carbon Nanotubes Synthesized over Group VIII Metallocenes

open access: yesNanomaterials, 2020
The paper reports the synthesis of carbon nanotubes from ethanol over group VIII (Fe, Co, Ni) catalysts derived from corresponding metallocenes. Several unexpected cooperative effects are reported, which are never observed in the case of individual ...
Aida R. Karaeva   +4 more
doaj   +1 more source

Synthesis of Metallocene Catalyst for Terpolymerization of Ethylene, Propylene and Diene [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2014
The bis(indenyl) zirconium dichloride catalyst was synthesized by a modified method at room temperature. Terpolymerization of ethylene, propylene and diene monomers were carried out using this metallocene catalyst under different conditions of different ...
S.M.M. Mortazavi   +4 more
doaj   +1 more source

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