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

using model chemistry: CCSD(T)/6-31+G**

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)/6-31+G**
 hartrees
Energy at 0K-277.643920
Energy at 298.15K 
HF Energy-276.961822
Nuclear repulsion energy131.392173
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)/6-31+G**
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' 3210 3081        
2 A' 3163 3035        
3 A' 3107 2982        
4 A' 1523 1461        
5 A' 1475 1415        
6 A' 1418 1361        
7 A' 1182 1134        
8 A' 1159 1113        
9 A' 884 848        
10 A' 559 537        
11 A' 460 441        
12 A" 3203 3073        
13 A" 1523 1461        
14 A" 1403 1346        
15 A" 1163 1116        
16 A" 966 927        
17 A" 381 366        
18 A" 243 233        

Unscaled Zero Point Vibrational Energy (zpe) 13510.8 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 12965.0 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)/6-31+G**
ABC
0.30954 0.29731 0.17016

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.325 0.175 0.000
C2 -0.908 1.037 0.000
H3 1.271 0.718 0.000
F4 0.325 -0.651 1.110
F5 0.325 -0.651 -1.110
H6 -1.789 0.395 0.000
H7 -0.914 1.666 0.890
H8 -0.914 1.666 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50401.09071.38341.38342.12572.13342.1334
C21.50402.20192.36622.36621.09021.09051.0905
H31.09072.20191.99991.99993.07722.54262.5426
F41.38342.36621.99992.22002.60692.63663.3021
F51.38342.36621.99992.22002.60693.30212.6366
H62.12571.09023.07722.60692.60691.78191.7819
H72.13341.09052.54262.63663.30211.78191.7803
H82.13341.09052.54263.30212.63661.78191.7803

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 109.007 C1 C2 H7 109.593
C1 C2 H8 109.593 C2 C1 H3 115.200
C2 C1 F4 109.995 C2 C1 F5 109.995
H3 C1 F4 107.278 H3 C1 F5 107.278
F4 C1 F5 106.715 H6 C2 H7 109.602
H6 C2 H8 109.602 H7 C2 H8 109.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability