(2H)formaldehyde

Formula: CD₂O
Molecular weight: 32.0383
CAS Registry Number: 1664-98-8
Information on this page:
Other data available:
- Vibrational and/or electronic energy levels
Data at other public NIST sites:
- Gas Phase Kinetics Database
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Gas phase ion energetics data

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to CD₂O⁺ (ion structure unspecified)

Ionization energy determinations

IE (eV)	Method	Reference	Comment
10.9076 ± 0.0030	PE	Niu, Shirley, et al., 1993	LL
10.901 ± 0.006	S	Drury-Lessard and Moule, 1977	LLK
10.904	PE	Baker, Baker, et al., 1968	RDSH

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
CDO⁺	13.10 ± 0.12	D	EI	Reed, 1956	RDSH
CO⁺	18.8 ± 0.3	?	EI	Brand and Reed, 1957	RDSH

References

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Niu, Shirley, et al., 1993
Niu, B.; Shirley, D.A.; Bai, Y., High resolution photoelectron spectroscopy and femtosecond intramolecular dynamics of H₂CO⁺ and D₂CO⁺, J. Chem. Phys., 1993, 98, 4377. [all data]

Drury-Lessard and Moule, 1977
Drury-Lessard, C.R.; Moule, D.C., The higher Rydberg states of formaldehyde, Chem. Phys. Lett., 1977, 47, 300. [all data]

Baker, Baker, et al., 1968
Baker, A.D.; Baker, C.; Brundle, C.R.; Turner, D.W., The electronic structures of methane, ethane, ethylene and formaldehyde studied by high-resolution molecular photoelectron spectroscopy, Intern. J. Mass Spectrom. Ion Phys., 1968, 1, 285. [all data]

Reed, 1956
Reed, R.I., Studies in electron impact methods. Part 1.- Formaldehyde, deuteroformaldehyde, and some related compounds, J. Chem. Soc. Faraday Trans., 1956, 52, 1195. [all data]

Brand and Reed, 1957
Brand, J.C.D.; Reed, R.I., The electronic spectrum of formaldehyde. Part II. Mechanisms of dissociation of formaldehyde and the formaldehyde molecular ion, J. Chem. Soc., 1957, 2386. [all data]

Notes

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Symbols used in this document:

AE Appearance energy
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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