Gas-phase C-H and N-H bond activation by a high valent nitrido-iron dication and NH-transfer to activated olefins |
| |
Authors: | Schlangen Maria Neugebauer Johannes Reiher Markus Schröder Detlef López Jesús Pitarch Haryono Marco Heinemann Frank W Grohmann Andreas Schwarz Helmut |
| |
Institution: | Institut für Chemie, Technische Universit?t Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany. |
| |
Abstract: | A tetrapodal pentadentate nitrogen ligand (2,6-bis(1,1-di(aminomethyl)ethyl)pyridine, 1) is used for the synthesis of the azido-iron(III) complex (1)Fe(N3)]X2 where X is either Br or PF6. By means of electrospray ionization mass spectrometry, the dication (1)Fe(N3)]2+ can be transferred into the gas phase as an intact entity. Upon collisional activation, (1)Fe(N3)]2+ undergoes an expulsion of molecular nitrogen to afford the dicationic nitrido-iron species (1)FeN]2+ as an intermediate, which upon further activation can intramolecularly activate C-H- and N-H bonds of the chelating ligand 1 or can transfer an NH unit in bimolecular reactions with activated olefins. The precursor dication (1)Fe(N3)]2+, the resulting nitrido species (1)FeN]2+, and its possible isomers are investigated by mass spectrometric experiments, isotopic labeling, and complementary computational studies using density functional theory. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|