Iron, methylene-

Formula: CH₂Fe
Molecular weight: 69.872
IUPAC Standard InChI: InChI=1S/CH2.Fe/h1H2;
IUPAC Standard InChIKey: PQKZEWNDKDKXNM-UHFFFAOYSA-N
CAS Registry Number: 95250-85-4
Chemical structure:
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Vibrational and/or electronic energy levels

State: ?

Energy (cm^-1)		Med.	References


T_d = 28000	T	Ar	Chang, Hauge, et al., 1978

State: X

Vib. sym.	No.	Approximate type of mode	cm^-1		Med.	Method	References


a₁	1	CH stretch	2941.6	m	Ar	IR	Chang, Kafafi, et al., 1975 Chang, Hauge, et al., 1978
	3	FeC stretch	623.9	vs	Ar	IR	Chang, Kafafi, et al., 1975 Chang, Hauge, et al., 1978
b₁	4	OPLA	700.3	s	Ar	IR	Chang, Kafafi, et al., 1975 Chang, Hauge, et al., 1978
	4	OPLA	697.4		Ar	IR	Chang, Kafafi, et al., 1975 Chang, Hauge, et al., 1978
b₂	5	CH₂ a-stretch	3011.5		Ar	IR	Chang, Hauge, et al., 1978
	6	CH₂ rock	452.0		Ar	IR	Chang, Hauge, et al., 1978

Additional references: Jacox, 1994, page 131

Notes

Medium

Strong

Very strong

Tentative assignment or approximate value

Photodissociation threshold

References

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Chang, Hauge, et al., 1978
Chang, S.-C.; Hauge, R.H.; Kafafi, Z.H.; Margrave, J.L.; Billups, W.E., Characterization and novel low-temperature reactions of FeCH2 and N2FeCH2, J. Am. Chem. Soc., 1978, 110, 24, 7975, https://doi.org/10.1021/ja00232a004 . [all data]

Chang, Kafafi, et al., 1975
Chang, S-C.; Kafafi, Z.H.; Hauge, R.H.; Billups, W.E.; Margrave, J.L., Isolation and characterization of iron methylene (FeCH2) via FTIR matrix isolation, J. Am. Chem. Soc., 1975, 107, 5, 1447, https://doi.org/10.1021/ja00291a076 . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]

Notes

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Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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