Results 31 to 40 of about 36,419 (269)

Azetidinylideneketenimines as a Multimodal Synthetic Platform: Coordination Chemistry and Cycloaddition‐Triggered Transformations

Angewandte Chemie, EarlyView.
Cross‐coupling/homologation sequence between a stable three‐membered‐ring carbene and isocyanides enables facile and rapid access to novel methyleneketenimines and the first bis(methyleneketenimine). Reactivity studies gave rise to the first methyleneketenimine‐transition metal complexes, unique multimodal reactivity ranging from CO2, isocyanate ...
Taichi Koike, Keisuke Ito, Shintaro Ishida, Takeaki Iwamoto   +3 more
wiley   +2 more sources

Experimental and theoretical investigations on the high-electron donor character of pyrido-annelated N-heterocyclic carbenes

Beilstein Journal of Organic Chemistry, 2016
Rh(CO)2Cl(NHC) complexes of dipyrido-annelated N-heterocyclic carbenes were prepared. From the C–H coupling constant of the respective imidazolium salts and the N–C–N angle of the N-heterocyclic carbene (NHC), a weaker σ-donor character than that of ...
Michael Nonnenmacher, Dominik M. Buck, Doris Kunz   +2 more
doaj   +1 more source

(Bis{2-[3-(2,4,6-trimethylbenzyl)imidazolin-2-yliden-1-yl-κC2]-4-methylphenyl}amido-κN)chloridopalladium(II)

Acta Crystallographica Section E, 2010
The coordination geometry about the Pd centre in the title compound, [Pd(C40H42N5)Cl], is approximately square-planar. The CNC pincer-type N-heterocyclic carbene ligand binds to the Pd atom in a tridentate fashion by the amido N atom and the two carbene ...
Guan-Jun Cheng, Wei Wei, Chuang Zhou, Mei-Ming Luo   +3 more
doaj   +1 more source

Stable Synapse‐Like Memory Switching in N‐Heterocyclic Carbene Monolayers

Angewandte Chemie, EarlyView.
We report a redox‐active N‐heterocyclic carbene (NHC) monolayer showing synapse‐like behavior via proton‐coupled electron transfer (PCET). These quinone‐functionalized NHCs form dense self‐assembled monolayers and highly stable molecular junctions. Bias‐driven PCET switches quinone/hydroquinone states, producing reversible hysteresis and spike‐timing ...
Ankita Das, Alessandro Borrini, Christian Gutheil, Björn Braunschweig, Billura Shakhayeva, Georgios Katsoukis, Ab F. Nieuwenhuis, Raka Ahmed, Susanne Leitherer, Gemma C. Solomon, Frank Glorius, Christian A. Nijhuis   +11 more
wiley   +2 more sources

Homoleptic and Heteroleptic Carbones L1‐C‐L2

Angewandte Chemie, EarlyView.
DFT and CCSD(T) calculations reveal that heteroleptic carbones L₁–C–L2 are thermodynamically stable species even with a weakly binding donor such as N2. Bond strengths show no simple correlation with bond lengths. Weaker carbon‐ligand bonds in homoleptic complexes L1─C─L1 are mostly strengthened in heteroleptic carbons L1─C─L2, while stronger bonds L2 ...
Ya Hu, Jiayi Chen, Qin Ma, Lili Zhao, Gernot Frenking   +4 more
wiley   +2 more sources

Photodynamics of Fe complexes: Variation with number of NHC functions [PDF]

EPJ Web of Conferences, 2019
Ultrafast spectroscopy on a series of Fe(II) complexes finds an increase of the 3MLCT lifetime with increasing number of N-heterocyclic carbene (NHC) donor functions revealing a promising route for the design of Fe photosensitizers.
Friedrich Aleksej, Zimmer Peter, Bauer Matthias, Lochbrunner Stefan   +3 more
doaj   +1 more source

Enhanced cytotoxicity of silver complexes bearing bidentate N-heterocyclic carbene ligands [PDF]

, 2012
A diverse library of cationic silver complexes bearing bis(N-heterocyclic carbene) ligands have been prepared which exhibit cytotoxicity comparable to cisplatin against the adenocarcinomas MCF7 and DLD1.
Baker, Benjamin D. Crossley, Charlotte E. Willans, Chen, Corberan, Diana C. F. Monteiro, Dragutan, Hermann, Hickey, Hindi, Jake Fielden, Kascatan-Nebioglu, Klasen, Lin, Magill, Marion, Medvetz, Melaiye, Meres, Mosmann, Patil, Patil, Patil, Patil, Patil, Rai, Ray, Roger M. Phillips, Roland, Siciliano, Teyssot, Teyssot, Willans   +32 more
core   +1 more source

The Far Side of Carboranes: Anticancer Active Monocations and Ambiently Stable Dications

Angewandte Chemie, EarlyView.
This work describes the synthesis of bench‐stable dicationic carboranes. Their enhanced electrophilicity is documented by opening the clusters with weak nucleophiles or dihydrogen. The surprising stability of positively charged carboranes in water enabled a study of their in vitro antiproliferative activity, which surpassed the effects of doxorubicin ...
Vlastimil Němec, Josef Holub, Maksim A. Samsonov, Zdeňka Růžičková, Josef Cvačka, Ján Vančo, Zdeněk Trávníček, Jan Belza, Zdeněk Dvořák, Jan Vrána, Aleš Růžička   +10 more
wiley   +2 more sources

N-Heterocyclic Carbene Coinage Metal Complexes Containing Naphthalimide Chromophore: Design, Structure, and Photophysical Properties

Inorganics, 2017
A series of novel N-heterocyclic carbene coinage metal complexes containing a naphthalimide (NI) chromophore has been prepared and fully characterized. Two types of molecules are described those where the NI unit is directly attached to the carbene unit ...
Pierre-Henri Lanoë, Btissam Najjari, Florine Hallez, Geoffrey Gontard, Hani Amouri   +4 more
doaj   +1 more source

Atomically precise ultrasmall copper cluster for room-temperature highly regioselective dehydrogenative coupling

Nature Communications, 2023
Three-component dehydrogenative coupling reactions represent important and practical methodologies for forging new C–N bonds and C–C bonds. Achieving highly all-in-one dehydrogenative coupling functionalization by a single catalytic system remains a ...
Teng Jia, Yi-Xin Li, Xiao-Hong Ma, Miao-Miao Zhang, Xi-Yan Dong, Jie Ai, Shuang-Quan Zang   +6 more
doaj   +1 more source