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

using model chemistry: QCISD(T)=FULL/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)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-277.744262
Energy at 298.15K 
HF Energy-276.980624
Nuclear repulsion energy130.829725
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)=FULL/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' 3149 3055        
2 A' 3107 3014        
3 A' 3048 2957        
4 A' 1466 1422        
5 A' 1427 1384        
6 A' 1368 1327        
7 A' 1150 1116        
8 A' 1136 1102        
9 A' 861 836        
10 A' 549 532        
11 A' 452 439        
12 A" 3142 3048        
13 A" 1467 1423        
14 A" 1365 1324        
15 A" 1127 1093        
16 A" 935 907        
17 A" 372 361        
18 A" 231 224        

Unscaled Zero Point Vibrational Energy (zpe) 13175.4 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 12781.4 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)=FULL/aug-cc-pVDZ
ABC
0.30854 0.29359 0.16891

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.325 0.174 0.000
C2 -0.910 1.045 0.000
H3 1.282 0.722 0.000
F4 0.325 -0.656 1.111
F5 0.325 -0.656 -1.111
H6 -1.807 0.404 0.000
H7 -0.910 1.683 0.899
H8 -0.910 1.683 -0.899

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51181.10261.38641.38642.14432.14762.1476
C21.51182.21552.37772.37771.10221.10241.1024
H31.10262.21552.01192.01193.10482.55642.5564
F41.38642.37772.01192.22162.62722.65343.3220
F51.38642.37772.01192.22162.62723.32202.6534
H62.14431.10223.10482.62722.62721.80221.8022
H72.14761.10242.55642.65343.32201.80221.7982
H82.14761.10242.55643.32202.65341.80221.7982

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 109.232 C1 C2 H7 109.477
C1 C2 H8 109.477 C2 C1 H3 114.971
C2 C1 F4 110.175 C2 C1 F5 110.175
H3 C1 F4 107.317 H3 C1 F5 107.317
F4 C1 F5 106.494 H6 C2 H7 109.670
H6 C2 H8 109.670 H7 C2 H8 109.301
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability