Results 61 to 70 of about 62,611 (245)

Dirhenium Carbonyl Complexes Bearing 2-Vinylpyridine, Morpholine and 1-Methylimidazole Ligands [PDF]

, 2008
Treatment of the labile compound [Re2(CO)8(MeCN)2] with 2-vinylpyridine in refluxing benzene affords exclusively the new compound [Re2(CO)8(μ-η1:η2-NC5H4CHCH2)] (1) in 39% yield in which the μ-η1:η2-vinylpyridine ligand is coordinated to one Re atom ...
Ahmed, Faruque, Bennett, Dennis W., Das, Anamika, Hassan, Mohammad R., Haworth, Daniel T., Kabir, Shariff E., Lindeman, Sergey V., Siddiquee, Tasneem   +7 more
core   +1 more source

Novel "green" catalysts for controlled ring-opening polymerization of lactide [PDF]

, 2010
Syntéza polylaktidu (PLA) polymerací za otevření kruhu cyklického monomeru (ROP) může být uskutečněna různými způsoby. Literatura uvádí více než 100 katalytických systémů, jejichž pomocí lze polylaktid a jiné biodegradabilní alifatické polyestery získat.
Surman, František
core  

Selective Nitrate Transmembrane Transport Through Adaptive Weak C─H Bonding Cyanostilbene Water Channels

Angewandte Chemie International Edition, EarlyView.
Here we demonstrate that weak HB CH donor cyanostilbenes promote water/ion transport through their ability to form less‐ordered transient water channels within the lipid bilayer with increased water permeability and NO3−/ Cl− selectivity. ABSTRACT Transmembrane water transport strongly depends on how dynamic, translocating water clusters are stabilized
Ioan Stroia, Dan‐Dan Su, Yuhao Li, Niculina Hadade, Ion Grosu, Arie van der Lee, Mihail Barboiu   +6 more
wiley   +1 more source

Forcing the Side‐on π‐Coordination of a C≡C Triple Bond to Technetium Using the As,CC,As Alkyne Pincer Ligand 1,2‐Bis(2‐(diisopropylarsaneyl)‐4‐(trifluoromethyl)phenyl)Ethyne

Angewandte Chemie International Edition, EarlyView.
Technetium alkyne complexes have eluded isolation for decades with the only indicators for their existence being the isolation of vinylidene carbenes or their follow‐up reaction products despite plentiful of reports for neighboring elements. Stable, crystalline Tc(III) and Tc(V) alkyne complexes (and their Re analogs) have now been prepared and fully ...
Maximilian Roca Jungfer, Moritz Johannes Ernst, Lukas Eberle, Marius Kesselring, Guilhem Claude, Joachim Ballmann   +5 more
wiley   +1 more source

Group IB organometallic chemistry. XXXII. Arylcopper compounds ArnCun as intermediates in organometallic synthesis. Single-step synthesis and dynamic NMR spectroscopy of diorganotin dihalides Ar2-nRnSnX2 (Ar 2-Me2NCH2C6H4 or (S)-2-Me2NCHMeC6H4; n 0 or 1)

, 1979
The selective, single-step synthesis of (2-Me2NCHZC6H4)RSnX2, in which Z H or Me, R Me or Ph and X Cl or Br, starting from the tetranuclear copper cluster compound (2-Me2NCHZC6H4)4Cu4 and RSnX3 is described. Reaction of (2-Me2NCH2C6H4)4Cu4 with SnBr4 in a 1/2 molar ratio afforded (2-Me2NCH2C6H4)2SnBr2 in almost quantitative yield.
Koten, G. van, Jastrzebski, J.T.B.H., Noltes, J.G.   +2 more
openaire   +3 more sources

N‐heterocyclic carbene‐based tetradentate Pt(II) phosphors for blue organic light‐emitting diodes: Molecular design, photophysics, and device performance

Bulletin of the Korean Chemical Society, EarlyView.
Structure‐oriented design of NHC‐based tetradentate Pt(II) complexes offers narrowband deep‐blue emission for OLEDs. This review highlights how steric shielding and electronic modulation regulate intermolecular interactions, excited‐state dynamics, and device performance, outlining design principles and outlines toward efficient and durable blue ...
Mingi Kim, Chan Hee Ryu, Kang Mun Lee
wiley   +1 more source

Group IB organometallic Chemistry. XXXV. Crystal and molecular structure of [Cu4{4-MeC6H4)MeC=C(C6H4NMe2-2)}2(C6H4NMe2-2)2], a tetranuclear organo-copper compound containing bridging alkenyl and aryl groups

, 1982
The crystal and molecular structure of the title compound has been determined by a single crystal X-ray diffraction study using standard Patterson and Fourier methods. The structure was refined by a block-diagonal least-square procedure to a final R value of 0.16 for 3454 reflections. Crystals are monoclinic, space group P2{1}/c, with a 14.007(5), b 12.
Koten, G. van, Noltes, J.G., Hoedt, R.W.M. ten, Spek, A.L., Schoone, J.C.   +4 more
openaire   +1 more source

Boosting Electron‐Hole Charge Separation in CO2 Photoreduction through Fluoroporphyrin‐Linked Nickel(II)‐Acetylide Frameworks

Carbon Energy, EarlyView.
A NiII‐acetylide framework, H2TFPP‐Ni‐AF, demonstrates outstanding photocatalytic CO2 reduction performance: 13.16 mmol h−1 g−1 of CO with 97.9% selectivity. Synergistic interactions, including d‐p orbital hybridization within NiII‐bis(acetylide) moieties ( − C ≡ C−NiII(PBu3)2 − C ≡ C − ) and the efficient charge transport afforded by π‐conjugated ...
Lifen Chen, Lian Duan, Yidi Wang, Yasuteru Shigeta, Kowit Hengphasatporn, Linli Xu, Wai‐Yeung Wong   +6 more
wiley   +1 more source

Group IB Organometallic Chemistry XXXIII: ArAuPPh3, ArAu(CNR), (ArAu)n and Ar4Cu2Au2 compounds in which the aryl group contains 2-MeO, 2,6-(MeO)2, 2-Me2N, 2-Me2NCH2 and (S)- or (R)-2-Me2NCHMe substituents as potential ligands

, 1980
The synthesis and structural characterization by }1{H NMR and }1{}9{}7{Au Mossbauer spectroscopy as well as by chiral labelling of the built-in ligands of three different types of arylgold(I) compounds is described.}1{}9{}7{Au Mossbauer data revealed that the benzyl- and arylgold(I) triphenylphosphine complexes which bear potential coordinating ...
Koten, G. van, Schaap, C.A., Jastrzebski, J.T.B.H., Noltes, J.G.   +3 more
openaire   +2 more sources

A regioselectivity switch in Pd-catalyzed hydroallylation of alkynes. [PDF]

, 2019
By exploiting the reactivity of a vinyl-Pd species, we control the regioselectivity in hydroallylation of alkynes under Pd-hydride catalysis. A monophosphine ligand and carboxylic acid combination promotes 1,5-dienes through a pathway involving ...
Chen, Qing-An, Dong, Vy M, Hu, Yan-Cheng, Ji, Ding-Wei, Zhao, Chao-Yang, Zheng, Hao   +5 more
core