return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CF3CH2F (1,1,1,2-tetrafluoroethane)

using model chemistry: QCISD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-475.613845
Energy at 298.15K-475.617897
Nuclear repulsion energy271.621775
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/6-31G*
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' 3115 2967 12.70      
2 A' 1556 1482 5.57      
3 A' 1505 1433 25.92      
4 A' 1365 1300 143.36      
5 A' 1260 1200 252.60      
6 A' 1143 1089 75.26      
7 A' 866 825 18.85      
8 A' 670 638 32.68      
9 A' 551 525 10.31      
10 A' 414 394 0.80      
11 A' 217 207 3.36      
12 A" 3178 3027 15.81      
13 A" 1370 1305 160.15      
14 A" 1247 1188 46.91      
15 A" 1022 973 53.70      
16 A" 532 506 3.11      
17 A" 358 341 1.31      
18 A" 113 108 5.68      

Unscaled Zero Point Vibrational Energy (zpe) 10240.4 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 9751.9 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/6-31G*
ABC
0.17665 0.09319 0.09201

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.355 0.197 0.000
C2 -1.156 0.240 0.000
F3 0.833 1.461 0.000
F4 0.833 -0.432 1.087
F5 0.833 -0.432 -1.087
F6 -1.631 -1.059 0.000
H7 -1.499 0.761 0.899
H8 -1.499 0.761 -0.899

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 H7 H8
C11.51111.35121.34401.34402.34962.13632.1363
C21.51112.33372.36382.36381.38271.09461.0946
F31.35122.33372.18282.18283.52422.59562.5956
F41.34402.36382.18282.17462.76522.62633.2875
F51.34402.36382.18282.17462.76523.28752.6263
F62.34961.38273.52422.76522.76522.03412.0341
H72.13631.09462.59562.62633.28752.03411.7980
H82.13631.09462.59563.28752.62632.03411.7980

picture of 1,1,1,2-tetrafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.494 C1 C2 H7 109.098
C1 C2 H8 109.098 C2 C1 F3 109.109
C2 C1 F4 111.640 C2 C1 F5 111.640
F3 C1 F4 108.167 F3 C1 F5 108.167
F4 C1 F5 107.997 F6 C2 H7 109.844
F6 C2 H8 109.844 H7 C2 H8 110.427
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability