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

using model chemistry: CCSD(T)=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-277.876721
Energy at 298.15K 
HF Energy-277.055458
Nuclear repulsion energy132.128464
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 CCSD(T)=FULL/TZVP
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' 3168 3028        
2 A' 3113 2976        
3 A' 3072 2937        
4 A' 1502 1436        
5 A' 1465 1400        
6 A' 1415 1352        
7 A' 1181 1130        
8 A' 1162 1111        
9 A' 882 843        
10 A' 576 551        
11 A' 473 452        
12 A" 3163 3024        
13 A" 1501 1435        
14 A" 1429 1366        
15 A" 1171 1119        
16 A" 969 927        
17 A" 384 367        
18 A" 231 220        

Unscaled Zero Point Vibrational Energy (zpe) 13427.2 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 12836.4 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 CCSD(T)=FULL/TZVP
ABC
0.31526 0.29838 0.17191

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.323 0.165 0.000
C2 -0.903 1.040 0.000
H3 1.266 0.716 0.000
F4 0.323 -0.650 1.099
F5 0.323 -0.650 -1.099
H6 -1.793 0.410 0.000
H7 -0.902 1.670 0.890
H8 -0.902 1.670 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50551.09171.36841.36842.12952.13472.1347
C21.50552.19222.35902.35901.09041.09041.0904
H31.09172.19221.99041.99043.07342.53022.5302
F41.36842.35901.99042.19872.60892.63153.2922
F51.36842.35901.99042.19872.60893.29222.6315
H62.12951.09043.07342.60892.60891.78111.7811
H72.13471.09042.53022.63153.29221.78111.7801
H82.13471.09042.53023.29222.63151.78111.7801

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 109.192 C1 C2 H7 109.597
C1 C2 H8 109.597 C2 C1 H3 114.198
C2 C1 F4 110.239 C2 C1 F5 110.239
H3 C1 F4 107.477 H3 C1 F5 107.477
F4 C1 F5 106.903 H6 C2 H7 109.510
H6 C2 H8 109.510 H7 C2 H8 109.423
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability