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Directing Protons to the Dioxygen Ligand of a Ruthenium(II) Complex with Pendent Amines in the Second Coordination Sphere
Author(s) -
Tronic Tristan A.,
Rakowski DuBois Mary,
Kaminsky Werner,
Coggins Michael K.,
Liu Tianbiao,
Mayer James M.
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201105266
Subject(s) - ligand (biochemistry) , protonation , ruthenium , chemistry , coordination sphere , amine gas treating , proton , hydrogen bond , stereochemistry , photochemistry , ion , molecule , organic chemistry , physics , catalysis , biochemistry , receptor , quantum mechanics
Proton relay : A side‐on Ru–O 2 complex with pendent amines in the ligand backbone has been synthesized to model proton delivery in O 2 reduction (see scheme and structure; red O, purple Ru, blue N, yellow P). Protonation occurs at the amine near the O 2 ligand, forming a hydrogen bond between the ammonium ion and the O 2 ligand, leading to a small increase in OO bond length.