Results 41 to 50 of about 25,864 (264)

Isolation of a Highly Reactive CBNC Heterocumulene via Azidoborylene Photolysis: Facile Access to a Crystalline Dioxaborirane

Angewandte Chemie, EarlyView.
Azidoborylene photolysis results in the isolation of a reactive C═B═N═C heterocumulene bearing an ambiphilic boron centre. Addition of 3O2 to this species results in the clean conversion to a unique example of a dioxaborirane. ABSTRACT Oxidation of the formal boron(0) complex MeCAAC2B in the presence of tetrabutylammonium azide leads to the formation ...
Hayley King, Vignesh Pattathil, William Kennedy, Robert K. Szilagyi, Conor Pranckevicius   +4 more
wiley   +2 more sources

Chlorido[(1,2,5,6-η)-cycloocta-1,5-diene](1-ethyl-4-isobutyl-1,2,4-triazol-5-ylidene)rhodium(I)

IUCrData
A new neutral triazole-based N-heterocyclic carbene rhodium(I) complex [RhCl(C8H12)(C8H15N3)], has been synthesized and structurally characterized. The complex crystallizes with two molecules in the asymmetric unit.
Timothy G. Lerch, Michael Gau, Daniel R. Albert, Edward Rajaseelan   +3 more
doaj   +1 more source

1,3-Bis(4-methylbenzyl)imidazol-2-ylidene silver(I) chloride catalyzed carboxylative coupling of terminal alkynes, butyl iodide and carbon dioxide

Journal of Saudi Chemical Society, 2017
The N-heterocyclic carbene silver(I) complex 1,3-bis(4-methylbenzyl)imidazol-2-ylidene silver chloride was applied as the effective catalyst for the three-component carboxylative coupling of terminal alkynes, butyl iodide and carbon dioxide. The reaction
Zhi-Zhi Zhang, Rui-Jie Mi, Fang-Jie Guo, Jing Sun, Ming-Dong Zhou, Xiang-Chen Fang   +5 more
doaj   +1 more source

Mercury(II) Complexes of Anionic N-Heterocyclic Carbene Ligands: Steric Effects of the Backbone Substituent

Molecules, 2020
Mercury(II) complexes (Me-maloNHCDipp)HgCl (1b), (t-Bu-maloNHCDipp)HgCl (2b) and (t-Bu-maloNHCDipp)HgMe (2c) supported by anionic N-heterocyclic carbenes have been obtained in good yields from the reaction of the potassium salt of N-heterocyclic carbene ...
Chandrakanta Dash, Animesh Das, H. V. Rasika Dias   +2 more
doaj   +1 more source

Efficient electrocatalytic acetylene semihydrogenation by electron–rich metal sites in N–heterocyclic carbene metal complexes

Nature Communications, 2021
This study explores N–heterocyclic carbene copper complexes toward selective electrocatalytic reduction of acetylene to ethylene. The electron–rich copper sites were found to facilitate acetylene adsorption and ethylene desorption and achieved high ...
Lei Zhang, Zhe Chen, Zhenpeng Liu, Jun Bu, Wenxiu Ma, Chen Yan, Rui Bai, Jin Lin, Qiuyu Zhang, Junzhi Liu, Tao Wang, Jian Zhang   +11 more
doaj   +1 more source

Non-classical N-Heterocyclic carbene complexes

, 2010
The expansion of the concept of N-heterocyclic carbenes as ligands for transition metals to mesoionic ligand systems has led to the discovery of a wide range of non-classical carbene-type ligands.
Krüger, Anneke, Albrecht, Martin, Martin Albrecht, Anneke Krüger   +3 more
core   +2 more sources

Synthesis and One‐Electron Reduction of Donor‐Acceptor‐Stabilized SiII–EII–SiII Trimetallylenes (E = Ge, Sn, Pb)

Angewandte Chemie, EarlyView.
The first isolable trimetallylenes (SiII)2EII (E = Ge, Sn, Pb) with pπ‐type silanylidenyl donors have been synthesized, having donor–acceptor electronic structures that give rise to near‐infrared absorption and enable access to bis(silanylidenyl)‐supported GeI and SnI radical anions upon one‐electron reduction with elemental potassium. ABSTRACT Herein,
Chaopeng Hu, Shenglai Yao, Christian Lorent, Matthias Driess   +3 more
wiley   +2 more sources

Dinuclear thiazolylidene copper complex as highly active catalyst for azid–alkyne cycloadditions

Beilstein Journal of Organic Chemistry, 2016
A dinuclear N-heterocyclic carbene (NHC) copper complex efficiently catalyzes azide–alkyne cycloaddition (CuAAC) “click” reactions. The ancillary ligand comprises two 4,5-dimethyl-1,3-thiazol-2-ylidene units and an ethylene linker.
Anne L. Schöffler, Ata Makarem, Frank Rominger, Bernd F. Straub   +3 more
doaj   +1 more source

N-heterocyclic carbene catalyzed synthesis of dimethyl carbonate via transesterification of ethylene carbonate with methanol

Journal of Saudi Chemical Society, 2015
An organocatalytic protocol for the synthesis of dimethyl carbonate has been developed. Under the catalysis of 5 mol% N-heterocyclic carbenes, ethylene carbonate undergoes transesterification reaction with methanol under very mild reaction conditions ...
Guang-Fen Du, Hao Guo, Ying Wang, Wen-Juan Li, Wei-Jie Shi, Bin Dai   +5 more
doaj   +1 more source

On the Bonding Situation in Stannocene and Plumbocene N-Heterocyclic Carbene Complexes

, 2019
A detailed experimental and computational study of a series of stannocene and plumbocene N-heterocyclic carbene complexes is presented. This unique class of group 14 Lewis acid base adducts was obtained from reactions of the corresponding metallocenes ...
Sergi, Danés, Carsten, Mueller, André, Schäfer, Diego, Andrada, Lisa, Wirtz, Rainer, Pöttgen, Theresa, Block, Volker, Huch   +7 more
core   +1 more source