title: A Lithium Amide Protected Against Protonation in the Gas Phase: Unexpected Effect of LiCl.
abstract: In cold THF and in the presence of LiCl, a lithium pyrrolidinylamide forms a 1:1 mixed aggregate, which is observed directly by ESI-MS. Gas-phase protonation of this species leads to selective transfer of H(+) to the chlorine, suggesting that LiCl shields the amide nitrogen and prevents its direct protonation.
authors.affiliation: †Sorbonne Universités, UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232, Case 45, 4 Place Jussieu, 75252 Paris Cedex 05, France.
authors.forename: Denis
authors.initials: D
authors.lastname: Lesage
authors.affiliation: ‡Normandie Université (COBRA), UMR CNRS-Université de Rouen-INSA de Rouen 6014, 76821 Mont St Aignan Cedex, France.
authors.forename: Gabriella
authors.initials: G
authors.lastname: Barozzino-Consiglio
authors.affiliation: ‡Normandie Université (COBRA), UMR CNRS-Université de Rouen-INSA de Rouen 6014, 76821 Mont St Aignan Cedex, France.
authors.forename: Romain
authors.initials: R
authors.lastname: Duwald
authors.affiliation: ‡Normandie Université (COBRA), UMR CNRS-Université de Rouen-INSA de Rouen 6014, 76821 Mont St Aignan Cedex, France.
authors.forename: Catherine
authors.initials: C
authors.lastname: Fressigné
authors.affiliation: ‡Normandie Université (COBRA), UMR CNRS-Université de Rouen-INSA de Rouen 6014, 76821 Mont St Aignan Cedex, France.
authors.forename: Anne
authors.initials: A
authors.lastname: Harrison-Marchand
authors.affiliation: ⊥Pasarow Mass Spectrometry Laboratory, Semel Institute for Neuroscience and Human Behavior and Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, California, 90019 United States.
authors.forename: Kym F
authors.initials: KF
authors.lastname: Faull
authors.affiliation: ‡Normandie Université (COBRA), UMR CNRS-Université de Rouen-INSA de Rouen 6014, 76821 Mont St Aignan Cedex, France.
authors.forename: Jacques
authors.initials: J
authors.lastname: Maddaluno
authors.affiliation: §Université Grenoble Alpes (DCM), UMR CNRS-UJF 5250 BP 53, 38041 Grenoble Cedex 9, France.
authors.forename: Yves
authors.initials: Y
authors.lastname: Gimbert