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Carbon Nitride as a Ligand: Selective Hydrogenation of Terminal Alkenes using [(η5-C5Me5)IrCl(g-C3N4-κ2N, N')]Cl: Selective Hydrogenation of Terminal Alkenes using [(η5-C5Me5)IrCl(g-C3N4-κ2N, N')]Cl

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JournalChemistry : A European Journal
DateAccepted/In press - 31 Jan 2020
DateE-pub ahead of print (current) - 4 Feb 2020
Number of pages8
Early online date4/02/20
Original languageEnglish

Abstract

Anchoring a homogeneous catalyst onto a heterogeneous support facilitates separation of the product from the catalyst, and catalyst-substrate interactions can also modify reactivity. Herein we describe the synthesis of composite materials comprising carbon nitride (g-C 3 N 4 ) as the heterogeneous support and the well established homogeneous catalyst moiety [Cp*IrCl] + (where Cp* = η 5 -C 5 Me 5 ), commonly used for catalytic hydrogenation. Coordination of [Cp*IrCl] + to g-C 3 N 4 occurs directly at exposed edge sites with a κ 2 N, N' binding motif, leading to a primary inner coordination sphere analogous to known homogeneous complexes of the general class [Cp*IrCl(NN-κ 2 N, N' )] + (where N, N' = a bidentate nitrogen ligand). Hydrogenation of unsaturated substrates using the composite catalyst is selective for terminal alkenes, which is attributed to the restricted steric environment of the outer coordination sphere at the edge-sites of g-C 3 N 4 .

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© 2020 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

    Research areas

  • carbon nitride, functionalization of 2D materials, hydrogenation, iridium, nitrogen ligands

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