Probing spin-orbit coupling of organocerium radicals formed in Ce atom reactions with alkylamines

Nyambo, Silver

Permalink

https://hdl.handle.net/2142/100657 Copy

Description

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

Issue Date

2018-06-20

Keyword(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 = CH3, C2H5, and C3H7) formed by Ce reactions with H2NR exhibit two band systems, separated by 78, 74, and 72 cm−1 , respectively. In contrast, the MATI spectrum of CeNC2H5 formed in the Ce + HN(CH3)2 reaction show two band systems with a much larger separation, 130 cm−1 . These separations are attributed to the spin-orbit (SO) splitting from the Ce 4f1 electron. The different splittings between CeNR from the reactions of primary amines and CeNC2H5 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 CeNC2H5 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.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/100657

DOI

10.15278/isms.2018.WD08

Copyright and License Information

Copyright 2018 Silver Nyambo

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