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All results from a given calculation for CH2F2 (Methane, difluoro-)

using model chemistry: PBEPBE/cc-pV(T+d)Z

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/cc-pV(T+d)Z
 hartrees
Energy at 0K-238.836903
Energy at 298.15K 
HF Energy-238.836903
Nuclear repulsion energy76.509826
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBE/cc-pV(T+d)Z
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2954 2932 48.55 125.16 0.09 0.16
2 A1 1475 1464 0.44 5.04 0.68 0.81
3 A1 1081 1073 90.41 3.65 0.30 0.46
4 A1 509 506 3.44 1.77 0.69 0.82
5 A2 1222 1213 0.00 8.06 0.75 0.86
6 B1 3020 2998 49.72 50.85 0.75 0.86
7 B1 1144 1136 15.13 1.87 0.75 0.86
8 B2 1405 1394 13.98 2.87 0.75 0.86
9 B2 1049 1041 232.36 2.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6929.0 cm-1
Scaled (by 0.9926) Zero Point Vibrational Energy (zpe) 6877.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBE/cc-pV(T+d)Z
ABC
1.63206 0.34528 0.30240

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pV(T+d)Z

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.504
H2 -0.919 0.000 1.111
H3 0.919 0.000 1.111
F4 0.000 1.114 -0.292
F5 0.000 -1.114 -0.292

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.10161.10161.36891.3689
H21.10161.83852.01342.0134
H31.10161.83852.01342.0134
F41.36892.01342.01342.2272
F51.36892.01342.01342.2272

picture of Methane, difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 113.122 H2 C1 F4 108.691
H2 C1 F5 108.691 H3 C1 F4 108.691
H3 C1 F5 108.691 F4 C1 F5 108.881
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.288      
2 H 0.033      
3 H 0.033      
4 F -0.177      
5 F -0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.730 1.730
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.395 0.000 0.000
y 0.000 -18.689 0.000
z 0.000 0.000 -15.340
Traceless
 xyz
x 1.620 0.000 0.000
y 0.000 -3.322 0.000
z 0.000 0.000 1.702
Polar
3z2-r23.404
x2-y23.294
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.227 0.000 0.000
y 0.000 2.484 0.000
z 0.000 0.000 2.346


<r2> (average value of r2) Å2
<r2> 39.830
(<r2>)1/2 6.311