1. Hydrogen Liberation from Gaseous 2-Bora-1,3-diazacycloalkanium Cations
- Author
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Jonathan Martens, Thomas Hellman Morton, Jos Oomens, Giel Berden, Jay-Ar Bendo, and Molecular Spectroscopy (HIMS, FNWI)
- Subjects
Molecular Structure and Dynamics ,Hydrogen ,Analytical chemistry ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Borohydride ,Photochemistry ,01 natural sciences ,Dissociation (chemistry) ,0104 chemical sciences ,Ion ,chemistry.chemical_compound ,Monomer ,chemistry ,Deuterium ,Infrared multiphoton dissociation ,Physical and Theoretical Chemistry ,0210 nano-technology ,Spectroscopy - Abstract
Contains fulltext : 182103.pdf (Publisher’s version ) (Open Access) Evidence is presented for cyclization to yield 2-bora-1,3-diazacycloalkanium cations in the gas phase. While the neutral compounds in solution and solid phase are known to possess an acyclic structure (as revealed by X-ray diffraction), the gaseous cations (from which borohydride BH4(-) ion has been expelled) have a cyclic structure, as revealed by InfraRed Multiple Photon Dissociation (IRMPD) spectroscopy and collisionally activated decomposition (CAD). The IRMPD decomposition of the monocyclic ions proceeds principally via H2 expulsion, although CAD experiments show additional pathways. Pyrolyses of solid monomeric salts and small oligomers produce higher polymers that are consistent with H2 expulsion as the major pathway. Deuterium labeling experiments show that scrambling occurs prior to IRMPD or CAD decomposition in the gas phase.
- Published
- 2017
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