ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Gas phase rovibrational analysis of ν1, ν2, and ν3 vibrationally predissociating fundamentals arising from D–F, D–C, and C≡N stretching vibrations of DCN–DF are reported. The rotational substructure in these fundamentals and a total of five associated hot bands have been assigned, thus providing precisely determined band origin frequencies, distortion, and rotational constants. The following molecular parameters were determined for the three fundamentals (in cm−1): ν0(ν1)=2730.8909(2), ν0(ν2)=2638.1309(1), ν0(ν3)=1943.0046(3), B0=0.111 807(1), D0J =0.1946(4)×10−6, α1=0.001 449(2), α2=−0.003 00(1), α3=−0.000 399(1). The l-type doubling constants q‘7 =0.378(3)×10−3 and q7 =0.380(3)×10−3 cm−1 were determined from the observed splitting in ν2+ν17−ν17. Anharmonic cross terms X027 =−0.600(3) and X037 =−0.61(3) cm−1 were also evaluated. Lifetimes of the ν1, ν2, and ν3 excited states were demonstrated to be 5.7(6)×10−10, 5.2(5)×10−9, and 3.0(5)×10−9 s, respectively.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.452104
Permalink
