Reversible cooperative dihydrogen binding and transfer with a bis-phosphenium complex of chromium.

ABSTRACT: The reversible reaction of H₂ with a bis-phosphenium complex of chromium provides a rare example of 3d transition metal/phosphenium cooperativity. Photolysis induces the activation of H₂ and yields a spectroscopically detectable phosphenium-stabilized (σ-H₂)-complex, readily showing exchange with gaseous H₂ and D₂. Further reaction of this complex affords a phosphine-functionalized metal hydride, representing a unique example of reversible H₂ cleavage across a 3d M[double bond, length as m-dash]P bond. The same species is also accessible via stepwise H⁺/H^- transfer to the bis-phosphenium complex, and releases H₂ upon heating or irradiation. Dihydrogen transfer from the H₂-co

SUBMITTER: Birchall N 

PROVIDER: S-EPMC8161683 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature