Infrared spectra of H2CO, H213CO, D2CO, and D213CO and anomalous values in vibrational force fields

The fundamental bands ν3, ν4, and ν6 of

“…The m 3 , m 4 , and m 6 band centers of D 13 2 CO are lower than those of D 12 2 CO species. The high-resolution values of the band centers of the D 13 2 CO can also be compared with the low-resolution values (1100.4, 922.7, and 975.9 cm À1 for m 3 , m 4 , and m 6 , respectively) presented in the [20]. The m 3 and m 4 have values close to the high-resolution values in Table 3 whereas the one for m 6 is deviating more.…”

“…Besides their own rotational measurements of D 13 2 CO, they used some literature data, see [19]. Wohar and Jagodzinski [20] measured low-resolution spectra of H 2 CO, H 13 2 CO, D 2 CO, and D 13 2 CO and determined the harmonic force field of formaldehyde. However, there remained some inconsistencies in the force field if data from all four isotopic species were used.…”

The fundamental band ν2 of D213CO

“…In 1978, Dangoisse et al [10] published ground-state study of the different isotopic varieties. For the D 2 13 CO they give 27 transitions, from which five transitions were observed earlier [11,12]. In 1991, Wohar and Jagodzinski [13] measured the low-resolution spectra of H 2 CO, H 2 13 CO, D 2 CO, and D 2 13 CO and determined the force field of the molecules.…”

“…1 As to the authors knowledge, only Refs. [10,13] deal with the isotopic form D 2 13 CO. In 1978, Dangoisse et al [10] published ground-state study of the different isotopic varieties.…”

Infrared and electronic absorption spectra of formaldehyde in gas phase and astrophysical H2O ice

“…Infrared spectra of H 2 CO, H 13 2 CO, D 2 CO, and D 13 2 CO were studied by Wohar and Jagodzinski (1991). Rotational constants for isotopic formaldehyde molecules H 2 CO, H 2 C 13 O, H 2 CO 13 , HDCO, and D 2 CO were determined by K-type doubling spectra and the frequencies of 1 01 ← 0 00 transitions (Takeshi 1960).…”