An unprecedented bonding mode for potassium within a PCP-pincer palladium hydride-K-Selectride (R) complex

作者：Boro Brian J; Duesler Eileen N; Goldberg Karen I; Kemp Richard A^*

来源：Inorganic Chemistry Communications, 2008, 11(12): 1426-1429.

DOI：10.1016/j.inoche.2008.09.021

• Tridentate ligands
• Pd complexes
• Crystal structure
• Hydride ligands

The reaction of (PCP)(i-Pr)PdCl and the commonly-used reductant K-Selectride (R) solution [K(sec-Bu(3)BH) in THF] does not yield a simple (PCP)(i-Pr)PdH species, but rather an adduct of the Pd-H that contains bound K(sec-Bu(3)BH). This adduct has been characterized by X-ray crystallography and shown to be a centrosymmetric dimer in the solid state. The most unique feature of the structure is that the tri-coordinate K(+) ion bonds only to the terminal palladium hydride and the two bridging boron hydrides. Despite being prepared in THF, no other donor ligands are bound to K(+). This [H(3)K](+) bonding mode for K(+) ions has not been previously reported.

• 出版日期2008-12