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	hartrees
Energy at 0K	-276.994320
Energy at 298.15K	-276.996842
Nuclear repulsion energy	117.830964

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3248	3090	6.57
2	A₁	1826	1737	283.75
3	A₁	1421	1352	2.38
4	A₁	967	920	67.69
5	A₁	551	525	4.38
6	A₂	728	693	0.00
7	B₁	819	779	85.97
8	B₁	641	610	2.17
9	B₂	3354	3191	0.11
10	B₂	1382	1315	229.17
11	B₂	971	924	10.76
12	B₂	438	417	0.95

Atom	y (Å)	z (Å)
C1	0.000	1.382
C2	0.000	0.063
H3	0.937	1.917
H4	-0.937	1.917
F5	1.079	-0.695
F6	-1.079	-0.695

	C1	C2	H3	H4	F5	F6
C1		1.3193	1.0790	1.0790	2.3400	2.3400
C2	1.3193		2.0780	2.0780	1.3182	1.3182
H3	1.0790	2.0780		1.8733	2.6159	3.2994
H4	1.0790	2.0780	1.8733		3.2994	2.6159
F5	2.3400	1.3182	2.6159	3.2994		2.1582
F6	2.3400	1.3182	3.2994	2.6159	2.1582

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F5	125.053	C1	C2	F6	125.053
C2	C1	H3	119.765	C2	C1	H4	119.765
H3	C1	H4	120.471	F5	C2	F6	109.894

All results from a given calculation for CH₂CF₂ (Ethene, 1,1-difluoro-)

using model chemistry: mPW1PW91/6-31G**

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
	Home All data for one species Geometry Experimental Experimental Geometries Same bond/angle many molecules Internal Coordinates by type Bond angles Calculated Calculated geometry Rotational constant Moments of inertia Products of moments of inertia BSE Bond lengths Show me a calculated geometry Comparisons Bonds, angles Rotational Constants Products of moments of inertia Point group Bad Calculations Bad moment of inertia Tutorials and Explanations Angle formulas Vibrations Experimental Vibrational frequencies Calculated Frequencies Scale factors Reactions Entropies Ions List Ions Energy Calculated Ionization Energy Compare Ionzation energy Electron Affinity Calculated Electron affinity Compare Electron affinity Proton Affinity Calculated Proton affinity Compare Proton affinity Ionization changes point group Experimental One molecule all properties One property a few molecules Enthalpy of formation Entropy Integrated Heat Capacity Heat Capacity Rotational Constants Vibrational Frequencies Dipole moment Ionization Energy Polarizability Quadrupole Point Groups Geometry Experimental Geometries Internal Coordinates by type Bond angles Rotational Constants Point Groups Diatomic bond lengths Vibrations Vibrational frequencies Diatomic Triatomics Energy Atomization Energy Internal Rotation Electrostatics Dipole Quadrupole Polarizability Reference Data Reference states Spin Splittings Molecules with good enthalpy Enthalpy at 0 Kelvin Calculated Energy Optimized Energy Energy 298K Minimum conformation Hydrogen bonds H bond with counterpoise Reaction Reaction Energy 0K Reaction Energy 298K Internal Rotation Barriers to internal rotation Rotational barrier and dipole Rotational Barrier 2 molecules Orbital HOMO LUMO gap HOMO Orbital Energies Nuclear repulsion energy Correlation Full vs Frozen core energies Partial correlation energies Ion Calculated Ionization Energy Vertical ionization Energy Calculated Electron affinity Calculated Proton affinity Atom charge differences Excited State Singlet triplet gap Electronic state Transition state Basis Set Extrapolation BSE energy BSE Bond lengths Geometry Calculated geometry AIM bond orders One type of bond Rotation Rotational constant Products of moments of inertia Moments of inertia Inertial defects Second moments Point group State symmetry <r2> Sorted by r2 Z-matrix Bad Calculations Bad moment of inertia Bad Calculated Bond Lengths Bad point group Worst molecules Vibrations Frequencies Animated vibrations Anharmonic Zero point energy (ZPE) Scale Factors Scale factors Scale factor uncertainty Calculate a scale factor Why scale vibrations Set scaling factors Bad Calculations Bad Vib. 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Calc. vs exp. Bad Vib. HF vs MP2 Bad scale factors Low excited states Oddities NaCN Is not linear FAQ Help Units Choose Units Energy Bond length Rotational Constant Moment of Inertia Dipole and Quadrupole Polarizability Explanations Hartree cm-1 Debye Credits Just show me Show me a calculated geometry Summary Using older interface Limit Basis sets Method options List Recent molecules Choose a few Molecules Number of atoms By heavy atoms Diatomics InChI Deuterated Dimers Geometry Point group Point group count Bonds types Isodesmic reactions Bad point group Multiple conformers, states Vibrations Big anharmonicity Energy Enthalpy at 0 Kelvin Similar molecules Similar Isomers Cis/trans Tautomers Multiple conformers, states Ions, Dipoles, etc. List Ions Ionization changes point group Dipole Quadrupole Polarizability Proton Affinities Index of CCCBDB Feedback Error form Wants
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Number	Element	Mulliken
1	C	-0.418
2	C	0.590
3	H	0.159
4	H	0.159
5	F	-0.245
6	F	-0.245

	x	y	z	Total
	0.000	0.000	1.017	1.017
CHELPG
AIM
ESP

<r²>	63.372
(<r²>)^1/2	7.961

All results from a given calculation for CH2CF2 (Ethene, 1,1-difluoro-)

using model chemistry: mPW1PW91/6-31G**

States and conformations

All results from a given calculation for CH₂CF₂ (Ethene, 1,1-difluoro-)