return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: wB97X-D/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/aug-cc-pVDZ
 hartrees
Energy at 0K-238.949286
Energy at 298.15K-238.952109
HF Energy-238.949286
Nuclear repulsion energy76.863224
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 wB97X-D/aug-cc-pVDZ
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 3079 2948 41.74 116.15 0.07 0.12
2 A1 1505 1441 0.06 3.05 0.73 0.85
3 A1 1114 1067 102.76 6.00 0.16 0.27
4 A1 520 498 4.88 1.21 0.63 0.77
5 A2 1259 1205 0.00 4.24 0.75 0.86
6 B1 3165 3030 28.45 40.19 0.75 0.86
7 B1 1169 1119 15.68 0.59 0.75 0.86
8 B2 1435 1373 10.52 0.64 0.75 0.86
9 B2 1085 1039 264.56 2.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7165.4 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 6859.5 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 wB97X-D/aug-cc-pVDZ
ABC
1.62826 0.35035 0.30619

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.507
H2 -0.920 0.000 1.106
H3 0.920 0.000 1.106
F4 0.000 1.105 -0.292
F5 0.000 -1.105 -0.292

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.09781.09781.36401.3640
H21.09781.84012.00572.0057
H31.09781.84012.00572.0057
F41.36402.00572.00572.2104
F51.36402.00572.00572.2104

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 113.884 H2 C1 F4 108.644
H2 C1 F5 108.644 H3 C1 F4 108.644
H3 C1 F5 108.644 F4 C1 F5 108.244
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.112      
2 H -0.183      
3 H -0.183      
4 F -0.373      
5 F -0.373      


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 2.011 2.011
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.261 0.000 0.000
y 0.000 -19.207 0.000
z 0.000 0.000 -15.342
Traceless
 xyz
x 2.014 0.000 0.000
y 0.000 -3.905 0.000
z 0.000 0.000 1.891
Polar
3z2-r23.783
x2-y23.946
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.417 0.000 0.000
y 0.000 2.753 0.000
z 0.000 0.000 2.567


<r2> (average value of r2) Å2
<r2> 39.575
(<r2>)1/2 6.291