Infrared laser spectroscopy of jet-cooled carbon clusters:  structure of triplet C6.
We report the first structural characterization of the triplet isomer of C6. Forty-one rovibrational/fine structure transitions in the nu 4(sigma u) antisymmetric stretch fundamental of the C6 cluster have been measured by diode laser absorption spectroscopy of a supersonic carbon cluster beam. The observed spectrum is characteristic of a centrosymmetric linear triplet state with cumulene-type bonding. The measured ground state rotational constant B0 = 0.048 479 (10)cm-1 and the effective bond length r(eff) = 1.2868 (1) angstroms are in good agreement with ab initio predictions for the linear triplet (3 sigma g-) state of C6.
Hwang
H J
HJ
Department of Chemistry, University of California, Berkeley 94720, USA.
Van Orden
A
A
Tanaka
K
K
Kuo
E W
EW
Heath
J R
JR
Saykally
R J
RJ
D001256:Astronomy / Q000295:instrumentation / Q000379:methods*; D002244:Carbon / Q000737:chemistry*; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation / Q000379:methods; D015394:Molecular Structure; D013055:Spectrophotometry, Infrared
D002244:Carbon