Results 61 to 70 of about 12,941 (225)

Crossing and Anticrossing of Exchange‐Coupled Molecular Spin Excitation Energy Levels

Small, EarlyView.
Orientation matters: The excitation energy levels of exchange‐coupled spins of two nickelocene molecules anchored to superconducting electrodes are explored via inelastic electron tunneling spectroscopy. Depending on the tilt angle of the single‐molecule magnetic probe the levels cross or exhibit avoided crossing. Abstract The superconducting Pb tip of
Lorenz Meyer, Maximilian Kögler, Robert Henninger, Nicolas Néel, Jörg Kröger   +4 more
wiley   +1 more source

Metallocene to metallocene conversion. Synthesis of an oxazoline-substituted pentamethyliridocenium cation from a ferrocenyloxazoline [PDF]

, 2016
Reaction of (S)-2-ferrocenyl-4-(1-methylethyl)oxazoline with [(CpIrCl2)-Ir-star](2) in benzonitrile with KPF6 and NaOH gave (eta(5)-(S)-2-(4-(1-methylethyl))oxazolinylcyclopentadienyl)(eta(5)-pentamethylcyclopentadienyl)-iridium(III) hexafluorophosphate (
Arrayás, Arthurs, Atkinson, Bildstein, Boyd, Christopher J. Richards, Ciancaleoni, Forissier, Gusev, Holland, Holtmann, Kang, Langheim, Long, McVey, Mohapatra, Moseley, Nishibayashi, Oxgaard, Peter N. Horton, Rausch, Reid, Richards, Ross A. Arthurs, Ruble, Sammakia, Schaarschmidt, Simon J. Coles, Stadlbauer, Struchkov, Suleimanov, Tenn, III   +31 more
core   +1 more source

Advancing Single‐Walled Carbon Nanotubes toward Next‐Generation Electronic Materials: The Critical Roles of Purity and Processability

Small Methods, EarlyView.
Single‐walled carbon nanotubes (SWNTs) are promising for a wide range of applications. In particular, their exceptional electrical conductivity positions them as potential alternatives to traditional metal conductors. This review identifies the key mechanisms governing their conductivity within composites and proposes practical pathways for translating
Xiao Yu, Alex Adronov
wiley   +1 more source

The influence of long chain branches of LLDPE on processability and physical properties

Polímeros, 2015
Two polyethylene-based on single-site metallocene catalyst (mLLDPE) were selected to characterize the effect of long chain branching (LCB) on blown film processability, optical and mechanical properties.
Paula Cristina Dartora, Ruth Marlene Campomanes Santana, Ana Cristina Fontes Moreira   +2 more
doaj   +1 more source

Electronic Structure and Multisite Basicity of the Pyramidal Phosphinidene-Bridged Dimolybdenum Complex[Mo2(η5‑C5H5)(μ‑κ1:κ1,η5‑PC5H4)(η6‑C6H3tBu3)(CO)2(PMe3)] [PDF]

, 2015
We thank the DGI of Spain for financial support (Project CTQ2012-33187) and the X-ray unit of the Universidad de Oviedo for acquisition of diffraction ...
García Díaz, María Esther, García Vivó, Daniel, González Albuerne, Isabel, Ruiz Álvarez, Miguel Ángel, Álvarez Fidalgo, María Ángeles   +4 more
core   +2 more sources

Olefin Polymerizations Oriented by Rational Designs of Group‐13 Compounds

The Chemical Record, EarlyView.
In coordination olefin polymerization chemistry, boron and aluminum compounds play important roles in both catalyst components and monomers. This personal account introduces our recent progress on the development of catalyst systems featured by the design of group‐13 counteranions, as well as the application of boronic acid‐crosslinked polyolefins to ...
Ryo Tanaka, Yu Zou
wiley   +1 more source

(μ-Di-tert-butylsilanediolato)bis[bis(η5-cyclopentadienyl)methylzirconium]

Acta Crystallographica Section E: Crystallographic Communications, 2019
The reaction of t-Bu2Si(OH)2 with two equivalents of Cp2Zr(CH3)2 produces the title t-Bu2SiO2-siloxide bridged dimer, [Zr2(CH3)2(C5H5)4(C8H18O2Si)] or [Cp2Zr(CH3)]2[μ-t-Bu2SiO2] (1), where one methyl group is retained per zirconium atom. The same product
David J. Berg, Leah Gajecki, Hunter Hill, Brendan Twamley   +3 more
doaj   +1 more source

N‐Heterocyclic Tetrylenes with a 1,1′‐Ferrocenylene Backbone and Bis(2,4,6‐triisopropylphenyl)boryl N‐Substituents

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
Ferrocene‐based N‐heterocyclic tetrylenes [Fe{(η5‐C5H4)NBTrip2}2E](E = GePb; Trip = C6H2‐2,4,6‐iPr3)exhibit long EN and short BN bonds, in agreement with increased electrophilicity due to the ‐M effect of the N‐substituents, whose stericdemand prevents coordination of 4‐(dimethylamino)pyridine (DMAP) to theplumbylene PbII atom, but allows the ...
Sneha Mullassery, Hannes L. Jacob, Clemens Bruhn, Ulrich Siemeling   +3 more
wiley   +1 more source

Modeling of synthesis and flow properties of propylene-diene copolymers [PDF]

, 2014
Copolymerization with nonconjugated dienes offers an attractive route for introducing long-chain branching in polypropylene. From a simplified set of rate equations for such copolymerization with a metallocene catalyst, we derive the probabilities of ...
Das, C, Read, DJ, Shirodkar, PP, Soulages, JM   +3 more
core   +1 more source

Metallocene Based Polyolefin Nanocomposites [PDF]

Materials, 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 ...
openaire   +2 more sources