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A Scandium-Stabilized Diisophosphaethynolate Ligand: [OCPPCO]

A Scandium-Stabilized Diisophosphaethynolate Ligand: [OCPPCO]

Lauren N Grant, Balazs Pinter, Brian C Manor, Hansjörg Grützmacher, Daniel J Mindiola

Angew Chem Int Ed Engl. 2018 Jan 22;57(4):1049-1052.

PMID: 29193685

Abstract:

The first example of the OCPPCO ligand, diisophosphaethynolate, is reported via reductive coupling of a Sc-OCP precursor. Upon reduction with KC8 , isolation of the dinuclear complex, namely [K(OEt2 )]2 [(nacnac)Sc(OAr)]2 (OCPPCO), is observed, leading to a unique motif [OCPPCO]4- , stabilized by two scandium centers. Detailed NMR spectra of all complexes as well as IR and single crystal X-ray studies were obtained to fully elucidate the nature of these complexes in solution as well as in the solid state. Theory is combined to probe the electronic structure and orbitals responsible for the bonding interactions in the Sc-OCPPCO-Sc skeleton but also to compare to the linear mode observed in the precursor.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP7440202	Scandium		7440-20-2	Price

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