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Title:PROBING SPIN-ORBIT COUPLING OF ORGANOCERIUM RADICALS FORMED IN Ce ATOM REACTIONS WITH ALKYLAMINES.
Author(s):Nyambo, Silver
Contributor(s):Yang, Dong-Sheng; Zhang, Yuchen
Subject(s):Radicals
Abstract:Ce atom reactions with alkyamines are carried out in a pulsed-laser ablation molecular beam source and characterized by mass-analyzed threshold ionization (MATI) spectroscopy. The MATI spectra of CeNR (R = \chem{CH_3}, \chem{C_2H_5}, and \chem{C_3H_7}) formed by Ce reactions with \chem{H_2NR} exhibit two band systems, separated by 78, 74, and 72 \wn, respectively. In contrast, the MATI spectrum of \chem{CeNC_2H_5} formed in the Ce + \chem{HN(CH_3)_2} reaction show two band systems with a much larger separation, 130 \wn. These separations are attributed to the spin-orbit (SO) splitting from the Ce 4f$^{1}$ electron. The different splittings between CeNR from the reactions of primary amines and \chem{CeNC_2H_5} from the reaction of secondary amine are due to their different structures. The CeNR complexes from the primary amines have acyclic structures with Ce double bonding to the N atom, whereas \chem{CeNC_2H_5} from the dimethylamine has a cyclic structure with Ce bonding to the N atom and one of the C atoms. The considerably smaller SO splittings in the CeNR species suggests that N coordination has a stronger quenching effect on the SO coupling of the Ce 4f electron than the C coordination.
Issue Date:2018-06-20
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:Conference Paper / Presentation
Type:Text
Language:English
URI:http://hdl.handle.net/2142/100657
DOI:10.15278/isms.2018.WD08
Other Identifier(s):WD08
Date Available in IDEALS:2018-08-17
2018-12-12


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