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

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

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-pVTZ
 hartrees
Energy at 0K-277.975853
Energy at 298.15K 
HF Energy-277.058632
Nuclear repulsion energy132.188142
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-pVTZ
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 3044        
2 A' 3093 2990        
3 A' 3056 2954        
4 A' 1495 1445        
5 A' 1445 1397        
6 A' 1396 1350        
7 A' 1165 1127        
8 A' 1157 1118        
9 A' 876 847        
10 A' 565 547        
11 A' 465 449        
12 A" 3145 3041        
13 A" 1497 1447        
14 A" 1389 1343        
15 A" 1156 1118        
16 A" 960 928        
17 A" 379 366        
18 A" 225 218        

Unscaled Zero Point Vibrational Energy (zpe) 13306.2 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 12864.4 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-pVTZ
ABC
0.31553 0.29882 0.17226

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 0.168 0.000
C2 -0.905 1.035 0.000
H3 1.267 0.719 0.000
F4 0.324 -0.648 1.098
F5 0.324 -0.648 -1.098
H6 -1.791 0.399 0.000
H7 -0.910 1.666 0.890
H8 -0.910 1.666 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50451.09181.36851.36852.12782.13452.1345
C21.50452.19502.35622.35621.09071.09051.0905
H31.09182.19501.99101.99103.07462.53462.5346
F41.36852.35621.99102.19682.60322.63043.2907
F51.36852.35621.99102.19682.60323.29072.6304
H62.12781.09073.07462.60322.60321.78161.7816
H72.13451.09052.53462.63043.29071.78161.7797
H82.13451.09052.53463.29072.63041.78161.7797

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 109.104 C1 C2 H7 109.651
C1 C2 H8 109.651 C2 C1 H3 114.501
C2 C1 F4 110.108 C2 C1 F5 110.108
H3 C1 F4 107.515 H3 C1 F5 107.515
F4 C1 F5 106.766 H6 C2 H7 109.525
H6 C2 H8 109.525 H7 C2 H8 109.372
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability