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Published October 1, 2014 | Supplemental Material
Journal Article Open

Palladium(II) Complexes Supported by a Bidentate Bis(secondary)phosphine Linked by Pyridine


A series of complexes of the type (PNP-H_2)PdX_2 (X = Cl, Br, I) have been synthesized, where PNP-H_2 is a bis(secondary)phosphine ligand linked by a pyridine, 2,6-(Ph(H)P)_2(C_5H_3N). Due to chirality at phosphorus, the parent ligand exists as a mixture of nearly equivalent rac and meso diastereomers non-interconverting at room temperature. When ligated to Pd(II) halides, however, the diastereomeric ratio is dependent upon the halide. The chloro, bromo, and iodo complexes have been characterized crystallographically. Conformationally similar meso diastereomers of each dihalide are roughly C_s symmetric in the solid state, while the rac diastereomers (identified only for X = Br, I) show substantially different solid-state conformations.

Additional Information

© 2014 Elsevier. Received Date: 6 May 2014. Revised Date: 30 July 2014. Accepted Date: 1 August 2014. Available online 16 August 2014. In Press, Accepted Manuscript — Note to users. The Bruker KAPPA APEXII X-ray diffractometer was purchased via an NSF CRIF:MU award to the California Institute of Technology, CHE-0639094. We gratefully acknowledge the support of the KAUST Center-In-Development at King Fahd University of Petroleum and Minerals (Dhahran, Saudi Arabia) and the USDOE Office of Basic Energy Sciences (Grant No. DE-FG03-85ER13431). Special issue: Dedicated to Don Tilley

Attached Files

Supplemental Material - 3meso.cif

Supplemental Material - 4meso.cif

Supplemental Material - 4rac.cif

Supplemental Material - 5meso.cif

Supplemental Material - 5rac.cif


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