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All results from a given calculation for CH3CHF2 (Ethane, 1,1-difluoro-)

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-277.586772
Energy at 298.15K 
HF Energy-276.941927
Nuclear repulsion energy131.563115
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 MP4/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3180 3037        
2 A' 3106 2966        
3 A' 3085 2945        
4 A' 1532 1463        
5 A' 1482 1415        
6 A' 1428 1363        
7 A' 1192 1138        
8 A' 1171 1118        
9 A' 893 852        
10 A' 564 539        
11 A' 461 440        
12 A" 3176 3032        
13 A" 1533 1464        
14 A" 1437 1372        
15 A" 1192 1138        
16 A" 987 942        
17 A" 381 364        
18 A" 265 253        

Unscaled Zero Point Vibrational Energy (zpe) 13532.0 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 12920.4 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 MP4/6-31G*
ABC
0.30939 0.29930 0.17083

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.369 0.000
C2 -1.332 -0.331 0.000
H3 -0.061 1.465 0.000
F4 0.723 -0.010 1.110
F5 0.723 -0.010 -1.110
H6 -1.158 -1.412 0.000
H7 -1.902 -0.055 0.894
H8 -1.902 -0.055 -0.894

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50491.09741.37791.37792.12492.14432.1443
C21.50492.20012.35782.35781.09541.09551.0955
H31.09742.20012.00552.00553.07932.54962.5496
F41.37792.35782.00552.21992.59572.63463.3031
F51.37792.35782.00552.21992.59573.30312.6346
H62.12491.09543.07932.59572.59571.78731.7873
H72.14431.09552.54962.63463.30311.78731.7880
H82.14431.09552.54963.30312.63461.78731.7880

picture of Ethane, 1,1-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 108.577 C1 C2 H7 110.098
C1 C2 H8 110.098 C2 C1 H3 114.534
C2 C1 F4 109.670 C2 C1 F5 109.670
H3 C1 F4 107.693 H3 C1 F5 107.693
F4 C1 F5 107.318 H6 C2 H7 109.329
H6 C2 H8 109.329 H7 C2 H8 109.390
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability