Observation of the d3Pi(g)<--c3Sigma(u)+ band system of C2.
A new band system of C(2), d (3)Pi(g)<--c (3)Sigma(u) (+) is observed by laser induced fluorescence spectroscopy, constituting the first direct detection of the c (3)Sigma(u) (+) state of C(2). Observations were made by laser excitation of c (3)Sigma(u) (+)(v(")=0) C(2), produced in an acetylene discharge, to the d (3)Pi(g)(v(')=3) level, followed by detection of Swan band fluorescence. Rotational analysis of this band yielded rotational constants for the c (3)Sigma(u) (+)(v(")=0) state: B(0)=1.9218(2) cm(-1), lambda(0)=-0.335(4) cm(-1) and gamma(0)=0.011(2) cm(-1). The vibrational band origin was determined to be nu(3-0)=15861.28 cm(-1).
Kokkin
Damian L
DL
School of Chemistry, University of Sydney, NSW 2006, Australia.
Reilly
Neil J
NJ
Morris
Christopher W
CW
Nakajima
Masakazu
M
Nauta
Klaas
K
Kable
Scott H
SH
Schmidt
Timothy W
TW