title: Facile N-H bond cleavage of ammonia by an iridium complex bearing a noninnocent PNP-pincer type phosphaalkene ligand.
abstract: A novel PNP-pincer type phosphaalkene complex of iridium bearing a dearomatized pyridine unit (3) has been prepared. Complex 3 rapidly reacts with ammonia at room temperature to afford a parent amido complex in high yield. DFT calculations indicate that the phosphaalkene unit with a strong π-accepting property effectively facilitates the N-H bond cleavage of ammonia via metal-ligand cooperation.
authors.affiliation: International Research Center for Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
authors.forename: Yung-Hung
authors.initials: YH
authors.lastname: Chang
authors.forename: Yumiko
authors.initials: Y
authors.lastname: Nakajima
authors.forename: Hiromasa
authors.initials: H
authors.lastname: Tanaka
authors.forename: Kazunari
authors.initials: K
authors.lastname: Yoshizawa
authors.forename: Fumiyuki
authors.initials: F
authors.lastname: Ozawa