Photoelectron spectroscopy of CN-, NCO-, and NCS-

Article abstract of DOI:10.1063/1.464244

The 266 nm photoelectron spectra of CN^-, NCO^-, and NCS^- have been recorded with a pulsed time-of-flight photoelectron spectrometer.The photoelectron spectrum of CN^- has also been recorded at 213 nm revealing transitions to the A ²Π state as well as the ground X ²Σ⁺ state of the CN radical.The following adiabatic electron affinities (EAs) are determined: EA(CN)=3.862+/-0.004 eV, EA(NCO)=3.609+/-0.005 eV, and EA(NCS)=3.537+/-0.005 eV.The adiabatic electron affinity of cyanide is in disagreement with the currently accepted literature value.Our measurement of the electron affinity of NCS confirms recent theoretical estimates that dispute the literature experimental value.By Franck-Condon analysis of the vibrational progressions observed in each spectrum, the change in bond lengths between anion and neutral are also determined.For NCO^- this yields R₀(C-N)=1.17+/-0.01 Angstroem and R₀(C-O)=1.26+/-0.01 Angstroem, and for CN^- the equilibrium bond length is found to be R_e(C-N)=1.177+/-0.004 Angstroem.The gas phase fundamental for CN^- is determined for the first time: ν=2035+/-40 cm^-1.

Full text of DOI:10.1063/1.464244

Photoelectron spectroscopy of CN−, NCO−, and NCS−
Stephen E. Bradforth, Eun Ha Kim, Don W. Arnold, and Daniel M. Neumark
Citation: The Journal of Chemical Physics 98, 800 (1993); doi: 10.1063/1.464244
View online: http://dx.doi.org/10.1063/1.464244
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/98/2?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.120.242.61 On: Sat, 29 Nov 2014 11:05:51

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.120.242.61 On: Sat, 29 Nov 2014 11:05:51

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.120.242.61 On: Sat, 29 Nov 2014 11:05:51

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.120.242.61 On: Sat, 29 Nov 2014 11:05:51

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.120.242.61 On: Sat, 29 Nov 2014 11:05:51

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.120.242.61 On: Sat, 29 Nov 2014 11:05:51

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.120.242.61 On: Sat, 29 Nov 2014 11:05:51

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.120.242.61 On: Sat, 29 Nov 2014 11:05:51

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.120.242.61 On: Sat, 29 Nov 2014 11:05:51

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.120.242.61 On: Sat, 29 Nov 2014 11:05:51