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: TPSSh/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/6-311+G(3df,2p)
 hartrees
Energy at 0K-239.073009
Energy at 298.15K-239.075827
HF Energy-239.073009
Nuclear repulsion energy76.976486
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 TPSSh/6-311+G(3df,2p)
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 3048 3048 42.11 114.43 0.07 0.14
2 A1 1535 1535 0.26 3.64 0.73 0.85
3 A1 1104 1104 97.51 6.18 0.15 0.26
4 A1 517 517 4.41 1.31 0.62 0.77
5 A2 1267 1267 0.00 4.59 0.75 0.86
6 B1 3123 3123 33.60 44.95 0.75 0.86
7 B1 1182 1182 14.81 0.91 0.75 0.86
8 B2 1449 1449 10.15 0.87 0.75 0.86
9 B2 1063 1063 259.53 2.52 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7143.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7143.6 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 TPSSh/6-311+G(3df,2p)
ABC
1.63786 0.35083 0.30667

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.507
H2 -0.915 0.000 1.101
H3 0.915 0.000 1.101
F4 0.000 1.105 -0.291
F5 0.000 -1.105 -0.291

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.09081.09081.36291.3629
H21.09081.82941.99901.9990
H31.09081.82941.99901.9990
F41.36291.99901.99902.2093
F51.36291.99901.99902.2093

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 113.984 H2 C1 F4 108.607
H2 C1 F5 108.607 H3 C1 F4 108.607
H3 C1 F5 108.607 F4 C1 F5 108.290
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.641      
2 H 0.082      
3 H 0.082      
4 F -0.403      
5 F -0.403      


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 1.962 1.962
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.414 0.000 0.000
y 0.000 2.789 0.000
z 0.000 0.000 2.561


<r2> (average value of r2) Å2
<r2> 39.500
(<r2>)1/2 6.285