Addition of Ammonia, Water, and Dihydrogen Across a Single Pd-Pd Bond

J. Am. Chem. Soc., 129 (34), 10318 -10319, 2007. 10.1021/ja0731571 S0002-7863(07)03157-5
Web Release Date: August 8, 2007

Addition of Ammonia, Water, and Dihydrogen Across a Single Pd-Pd Bond

Claudia M. Fafard, Debashis Adhikari, Bruce M. Foxman, Daniel J. Mindiola, and Oleg V. Ozerov*

Department of Chemistry, Brandeis University, MS015, 415 South Street, Waltham, Massachusetts 02454 and Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405

ozerov@brandeis.edu

Received May 4, 2007

Abstract:

Pincer-supported Pd alkyl complexes (PNP)PdR undergo photochemical conversion to a dimeric (PNP)Pd-Pd(PNP) complex with a single Pd-Pd bond. Dissociation of the dimer into monomeric (PNP)Pd species is kinetically accessible thermally and photochemically. (PNP)Pd-Pd(PNP) reacts with ammonia, water, and dihydrogen by adding the H-X bond of the substrate (X = NH₂, OH, H) across the Pd-Pd bond. For ammonia, this represents a rare example of conversion of NH₃ to terminal hydride and amide ligands by a bimetallic complex.

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