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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: CISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/6-311G*
 hartrees
Energy at 0K-574.741555
Energy at 298.15K-574.745215
HF Energy-573.671079
Nuclear repulsion energy364.097618
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 CISD/6-311G*
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' 3286 3041 24.36      
2 A' 1583 1465 3.39      
3 A' 1431 1324 214.14      
4 A' 1315 1217 216.77      
5 A' 1235 1143 161.06      
6 A' 937 867 55.53      
7 A' 776 718 43.13      
8 A' 620 573 18.23      
9 A' 558 516 11.80      
10 A' 388 359 0.10      
11 A' 260 241 5.16      
12 A" 1494 1382 21.81      
13 A" 1353 1252 417.48      
14 A" 1269 1174 128.27      
15 A" 625 578 1.48      
16 A" 446 413 1.59      
17 A" 225 208 3.39      
18 A" 83 77 1.06      

Unscaled Zero Point Vibrational Energy (zpe) 8941.5 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 8273.6 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 CISD/6-311G*
ABC
0.12560 0.08253 0.06834

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.119 -0.597 0.000
C2 -0.596 0.743 0.000
F3 1.424 -0.443 0.000
F4 -0.230 -1.283 1.071
F5 -0.230 -1.283 -1.071
F6 -0.230 1.423 -1.085
F7 -0.230 1.423 1.085
H8 -1.670 0.607 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.51871.31351.31921.31922.31942.31942.1566
C21.51872.34202.32082.32081.33161.33161.0827
F31.31352.34202.14192.14192.71942.71943.2671
F41.31922.32082.14192.14233.46022.70642.6065
F51.31922.32082.14192.14232.70643.46022.6065
F62.31941.33162.71943.46022.70642.16961.9789
F72.31941.33162.71942.70643.46022.16961.9789
H82.15661.08273.26712.60652.60651.97891.9789

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.747 C1 C2 F7 108.747
C1 C2 H8 110.882 C2 C1 F3 111.368
C2 C1 F4 109.530 C2 C1 F5 109.530
F3 C1 F4 108.896 F3 C1 F5 108.896
F4 C1 F5 108.569 F6 C2 F7 109.104
F6 C2 H8 109.664 F7 C2 H8 109.664
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability