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

using model chemistry: QCISD(T)/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-277.733865
Energy at 298.15K 
HF Energy-276.980380
Nuclear repulsion energy130.708438
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 QCISD(T)/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 A' 3143 3074        
2 A' 3102 3033        
3 A' 3043 2975        
4 A' 1464 1431        
5 A' 1425 1393        
6 A' 1366 1335        
7 A' 1149 1123        
8 A' 1134 1109        
9 A' 860 841        
10 A' 548 536        
11 A' 451 441        
12 A" 3136 3067        
13 A" 1465 1432        
14 A" 1362 1332        
15 A" 1124 1099        
16 A" 933 913        
17 A" 372 363        
18 A" 230 225        

Unscaled Zero Point Vibrational Energy (zpe) 13152.4 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 12860.4 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 QCISD(T)/aug-cc-pVDZ
ABC
0.30795 0.29306 0.16859

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.326 0.174 0.000
C2 -0.911 1.046 0.000
H3 1.283 0.723 0.000
F4 0.326 -0.656 1.112
F5 0.326 -0.656 -1.112
H6 -1.809 0.405 0.000
H7 -0.911 1.684 0.900
H8 -0.911 1.684 -0.900

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51321.10341.38771.38772.14652.14942.1494
C21.51322.21772.37992.37991.10321.10331.1033
H31.10342.21772.01352.01353.10782.55872.5587
F41.38772.37992.01352.22372.62992.65573.3249
F51.38772.37992.01352.22372.62993.32492.6557
H62.14651.10323.10782.62992.62991.80391.8039
H72.14941.10332.55872.65573.32491.80391.7999
H82.14941.10332.55873.32492.65571.80391.7999

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 109.248 C1 C2 H7 109.465
C1 C2 H8 109.465 C2 C1 H3 114.987
C2 C1 F4 110.175 C2 C1 F5 110.175
H3 C1 F4 107.308 H3 C1 F5 107.308
F4 C1 F5 106.498 H6 C2 H7 109.671
H6 C2 H8 109.671 H7 C2 H8 109.308
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability