Bidentate ligands templated by a convex trimetallic bis(salphen) platform

• Authors: Zoraida Freixa , Sergio Ponsico , Peter Frischmann , Mark MacLachlan , Marta Martfnez-Belmonte , Eduardo Escudero-Adán , Piet van Leeuwen
• Languages of publication: EN

Abstracts

EN

A Zn3-bis(salphen) compound was used as a template for the construction of bidentate phosphine ligands by self-assembly with phosphines containing a carboxyl group. The convex shape of the template, exposing the three zinc atoms, ensured the correct orientation of the assembled diphosphine, such that it can coordinate to a single metal atom. The strong zinc-carboxylate bond guaranteed the integrity of the final assembly at the low concentrations (1 mM) used in catalysis. Depending on the substitution pattern of the benzoic acid phosphines, either monometallic chelates or dimeric complexes were formed. Coordination studies were carried out for Pt and Rh. A modest chelate effect in the rhodium catalyzed hydroformylation of 1-octene (l/b=4.7) confirmed the formation of the bidentate assemblies.

Keywords

EN

Supramolecular catalysis; Metallosalphen; Hydroformylation; Bite angle effect; Salphen platform

• Publisher: De Gruyter Open
• Journal: Supramolecular Catalysis
• Year: 2012
• Volume: 1
• Pages: 1-8

Dates

online

10 - 7 - 2012

received

25 - 4 - 2012

accepted

25 - 5 - 2012

Contributors

author

Zoraida Freixa

• Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain
• Facultad de Química de San Sebastián, Universidad del País Vasco UPV/EHU, San Sebastián, 20080, Spain

author

Sergio Ponsico

• Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain

author

Peter Frischmann

• Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada, V6T 1Z1

author

Mark MacLachlan

• Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada, V6T 1Z1

author

Marta Martfnez-Belmonte

• Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain

author

Eduardo Escudero-Adán

• Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain

author

Piet van Leeuwen

• Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain

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Identifiers

DOI

10.2478/supcat-2012-0001