Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)

Property	Value	Uncertainty	units	Reference	Comment

Information can also be found for this species in the NIST Chemistry Webbook

Vibrational levels (cm^-1)

Mode Number	Symmetry	Frequency (cm-1)	Frequency Reference	Intensity (km mol-1)	Int. unc.	Intensity Reference	Comment
2	A1	2219	webbook				SiH2 sym stretch
3	A1	1350	webbook				CH2 scissors
4	A1	985	webbook				Si=C stretch
5	A1	927	webbook				SiH2 scissors
7	B1	741	webbook				CH2 wag
10	B2	2239	webbook				SiH2 asym stretch
11	B2	817	webbook				CH2 rock

Calculated vibrational frequencies for CH₂SiH₂ (silaethylene).

Rotational Constants (cm^-1)
See section I.F.4 to change rotational constant units

A	B	C	reference	comment

Calculated rotational constants for CH₂SiH₂ (silaethylene).

Product of moments of inertia
	amu3Å6		0	gm3 cm6

Geometric Data

Point Group C_2v

Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees

Description	Value	unc.	Connectivity				Reference	Comment
			Atom 1	Atom 2	Atom 3	Atom 4

Cartesians

Atom	x (Å)	y (Å)	z (Å)

Atom - Atom Distances
Distances in Å
Calculated geometries for CH₂SiH₂ (silaethylene).

Bond descriptions
Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond

Bond Type	Count
C=Si	1
H-C	2
H-Si	3

Connectivity

Atom 1	Atom 2
C1	Si2
C1	H3
C1	H4
Si2	H5
Si2	H6

Electronic energy levels (cm^-1)

Energy (cm-1)	Degeneracy	reference	description

Dipole, Quadrupole and Polarizability
Electric dipole moment
Calculated electric dipole moments for CH₂SiH₂ (silaethylene).
Electric quadrupole moment
Calculated electric quadrupole moments for CH₂SiH₂ (silaethylene).

References
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squib	reference	DOI
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)

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