Shared posts

24 Feb 14:51

Experimental and computational studies of borohydride catalyzed hydrosilylation of a variety of C[double bond, length as m-dash]O and C[double bond, length as m-dash]N functionalities including esters, amides and heteroarenes

New J. Chem., 2014, 38,1694-1700
DOI: 10.1039/C3NJ01485A, Paper
Michael G. Manas, Liam S. Sharninghausen, David Balcells, Robert H. Crabtree
Sodium borohydride and a series of related borohydrides catalyze a transition metal-free hydrosilylation of a variety of C[double bond, length as m-dash]O and C[double bond, length as m-dash]N functionalities under mild conditions.
The content of this RSS Feed (c) The Royal Society of Chemistry
06 Jan 21:16

Short Survey of the Chemical Reduction Behavior of the Base-Stabilized Iron Dichloroboryl Complexes [(η5-C5Me5)Fe(CO)2BCl2(LB)]

by Holger Braunschweig, Alexander Damme, Rian D. Dewhurst, Thomas Kramer, Ivo Krummenacher and Ashwini K. Phukan

TOC Graphic

Organometallics
DOI: 10.1021/om401176h
20 Dec 14:13

McKenna ReactionWhich Oxygen Attacks Bromotrimethylsilane?

by Katarzyna M. Błażewska

TOC Graphic

The Journal of Organic Chemistry
DOI: 10.1021/jo4021612
15 Oct 02:50

Redox-active cyclopentadienyl Ni complexes with quinoid N-heterocyclic carbene ligands for the electrocatalytic hydrogen release from chemical fuels

New J. Chem., 2013, 37,3402-3405
DOI: 10.1039/C3NJ00276D, Letter
Oana R. Luca, Daria L. Huang, Michael K. Takase, Robert H. Crabtree
The title complex is an electro-active dehydrogenation catalyst.
The content of this RSS Feed (c) The Royal Society of Chemistry
28 Aug 07:40

N-Heterocyclic Dicarbene Iridium(III) Catalysts Enabling Water Oxidation under Visible Light Irradiation

by Andrea Volpe, Andrea Sartorel, Cristina Tubaro, Laura Meneghini, Marilena Di Valentin, Claudia Graiff, Marcella Bonchio

Abstract

Novel iridium(III) di-NHC complexes have been synthesized by transmetalation of the dicarbene ligand from the corresponding dicarbene silver complex. The iridium(III) complex [IrClCp*(di-NHC)](PF6) (2; di-NHC = 1,1′-dimethyl-3,3′-ethylenediimidazole-2,2′-diylidene) behaves as an efficient catalyst for the oxidation of water by using CeIV or NaIO4 as sacrificial oxidants, reaching a TOF of 0.20 s–1, comparable with the most active catalysts reported in the literature. Complex 2 also displays remarkable catalytic activity in the photocatalyzed oxidation of water by using [Ru(bpy)3]2+ as sensitizer and persulfate as sacrificial electron acceptor. The fate of the catalyst under turnover conditions was investigated by combined spectroscopic, kinetic and GC–MS methods. In particular, EPR experiments performed under photoirradiation revealed the formation of a high-valent IrIV molecular intermediate involved in the primary photoinduced electron-transfer events.

Thumbnail image of graphical abstract

The dicarbene iridium(III) complex [IrClCp*(di-NHC)](PF6) (2) is an efficient catalyst for the oxidation of water both in the dark (CeIV or NaIO4 as sacrificial oxidants) and under photoirradiation conditions {[Ru(bpy)3]2+ as photosensitizer and persulfate as sacrificial electron acceptor}.

09 Aug 18:33

Characterization and Reactivity Studies of Dinuclear Iridium Hydride Complexes Prepared from Iridium Catalysts with N,P and C,N Ligands under Hydrogenation Conditions

by Stefan Gruber, Markus Neuburger and Andreas Pfaltz

TOC Graphic

Organometallics
DOI: 10.1021/om4007467
09 Aug 08:59

Ionic liquids are compatible with on-water catalysis

Chem. Commun., 2013, 49,8347-8349
DOI: 10.1039/C3CC44150D, Communication
Kaitlin D. Beare, Alexander K. L. Yuen, Anthony F. Masters, Thomas Maschmeyer, Christopher S. P. McErlean
Ionic liquids enable on-water catalysed reactions for otherwise unreactive solid-solid systems.
The content of this RSS Feed (c) The Royal Society of Chemistry