| Fragmentation energetics of the phenol(+)···Ar(3) cation cluster. | |
| | |
MedLine Citation:
|
PMID: 20879766 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
The various dissociation thresholds of phenol(+)···Ar(3) complexes for the consecutive loss of all three Ar ligands were measured in a molecular beam using resonant photoionization efficiency and mass analyzed threshold ionization spectroscopy via excitation of the first excited singlet state (S(1)). The adiabatic ionization energy is derived as 68077 ± 15 cm(-1). The analysis of the dissociation thresholds demonstrate that all three Ar ligands in the neutral phenol···Ar(3) tetramer are attached to the aromatic ring via π-bonding, denoted phenol···Ar(3)(3π). The value of the dissociation threshold for the loss of one Ar ligand from phenol(+)···Ar(3)(3π), ∼190 cm(-1), is significantly lower than the binding energy measured for the π-bonded Ar ligand in the phenol(+)···Ar(π) dimer, D(0) = 535 ± 3 cm(-1). This difference is rationalized by an ionization-induced π → H isomerization process occurring prior to dissociation, that is, one Ar atom in phenol(+)···Ar(3)(3π) moves to the OH binding site, leading to a structure with one H-bonded and 2 π-bonded ligands, denoted phenol(+)···Ar(3)(H/2π). The dissociation thresholds for the loss of two and three Ar atoms are also reported as 860 and 1730 cm(-1). From these values, the binding energy of the H-bound Ar atom can be estimated as 870 cm(-1). |
| | |
Authors:
|
Antonio Armentano; Mikko Riese; Mehran Taherkhani; Med Ben Yezzar; Klaus Müller-Dethlefs; Masaaki Fujii; Otto Dopfer |
Related Documents
:
|
21070006 - Manipulating graphene mobility and charge neutral point with ligand-bound nanoparticles... 19489586 - Arnold tongue of electrochemical nonlinear oscillators. 19053676 - Excited-state dynamics of 12'-apo-beta-caroten-12'-al and 8'-apo-beta-caroten-8'-al in ... 19136006 - Crystal structures of mite allergens der f 1 and der p 1 reveal differences in surface-... 17455346 - Crystallization pathways and kinetics of carbamazepine-nicotinamide cocrystals from the... 22058866 - Catena-poly[[diaqua-copper(ii)]-μ-hy-drox-ido-κo:o-μ-[4-(4h-1,2,4-triazol-4-yl)benzo... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: The journal of physical chemistry. A Volume: 114 ISSN: 1520-5215 ISO Abbreviation: J Phys Chem A Publication Date: 2010 Oct |
Date Detail:
|
Created Date: 2010-10-21 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9890903 Medline TA: J Phys Chem A Country: United States |
Other Details:
|
Languages: eng Pagination: 11139-43 Citation Subset: IM |
Affiliation:
|
Photon Science Institute, The University of Manchester, Manchester, M13 9PL, United Kingdom. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evidence for bioavailability of Au nanoparticles from soil and biodistribution within earthworms (Ei...
Next Document: Improving the Antioxidant Protection of Packaged Food by Incorporating Natural Flavonoids into Ethyl...