Bond-length-dependent core hole localization observed in simple hydrocarbons

Authors
Gunnelin, K Glans, P Rubensson, JE Sathe, C Nordgren, J Li, Y Gel'mukhanov, F Agren, H
Citation
K. Gunnelin et al., Bond-length-dependent core hole localization observed in simple hydrocarbons, PHYS REV L, 83(7), 1999, pp. 1315-1318
Citations number
32
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
7
Year of publication
1999
Pages
1315 - 1318
Database
ISI
SICI code
0031-9007(19990816)83:7<1315:BCHLOI>2.0.ZU;2-Y
Abstract
Soft x-ray-emission spectroscopy is applied to measure the amount of dynami c symmetry breaking in core-excited acetylene, ethylene, and ethane. Large variations are observed between the molecules and are rationalized in terms of the different C-C bond lengths: Shorter bond lengths give smaller symme try breaking. The results also indicate that asymmetric modes are important for all the systems studied, in contradiction to previous assumptions in l iterature.