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 CF3CHF2 (pentafluoroethane)

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-574.943851
Energy at 298.15K-574.947185
HF Energy-573.584417
Nuclear repulsion energy356.547985
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' 3133 3039        
2 A' 1453 1409        
3 A' 1308 1269        
4 A' 1186 1151        
5 A' 1118 1085        
6 A' 857 832        
7 A' 703 682        
8 A' 560 543        
9 A' 502 487        
10 A' 356 345        
11 A' 240 233        
12 A" 1355 1314        
13 A" 1206 1170        
14 A" 1129 1096        
15 A" 568 551        
16 A" 405 392        
17 A" 207 201        
18 A" 80 77        

Unscaled Zero Point Vibrational Energy (zpe) 8181.1 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 7936.5 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
0.12001 0.07956 0.06576

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 0.119 -0.603 0.000
C2 -0.614 0.748 0.000
F3 1.453 -0.438 0.000
F4 -0.233 -1.311 1.096
F5 -0.233 -1.311 -1.096
F6 -0.233 1.448 -1.110
F7 -0.233 1.448 1.110
H8 -1.707 0.615 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.53631.34421.35211.35212.35782.35782.1942
C21.53632.38262.36372.36371.36601.36601.1016
F31.34422.38262.19252.19252.76252.76253.3306
F41.35212.36372.19252.19273.53262.75902.6614
F51.35212.36372.19252.19272.75903.53262.6614
F62.35781.36602.76253.53262.75902.21982.0243
F72.35781.36602.76252.75903.53262.21982.0243
H82.19421.10163.33062.66142.66142.02432.0243

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.520 C1 C2 F7 108.520
C1 C2 H8 111.509 C2 C1 F3 111.440
C2 C1 F4 109.679 C2 C1 F5 109.679
F3 C1 F4 108.810 F3 C1 F5 108.810
F4 C1 F5 108.361 F6 C2 F7 108.684
F6 C2 H8 109.774 F7 C2 H8 109.774
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability