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All results from a given calculation for CF3CHF2 (pentafluoroethane)

using model chemistry: MP2/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/CEP-121G*
 hartrees
Energy at 0K-132.035384
Energy at 298.15K-132.038746
HF Energy-130.907029
Nuclear repulsion energy201.001691
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 MP2/CEP-121G*
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' 3188 3037 18.66      
2 A' 1485 1415 1.64      
3 A' 1334 1271 160.59      
4 A' 1211 1153 197.88      
5 A' 1145 1091 154.04      
6 A' 871 830 55.21      
7 A' 717 683 33.42      
8 A' 570 543 15.16      
9 A' 513 489 8.42      
10 A' 358 341 0.04      
11 A' 245 233 4.54      
12 A" 1403 1336 11.00      
13 A" 1230 1172 403.48      
14 A" 1159 1105 112.25      
15 A" 577 550 0.65      
16 A" 409 390 1.10      
17 A" 210 200 2.88      
18 A" 76 72 1.04      

Unscaled Zero Point Vibrational Energy (zpe) 8349.9 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 7955.8 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 MP2/CEP-121G*
ABC
0.11997 0.07894 0.06538

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.122 -0.606 0.000
C2 -0.613 0.756 0.000
F3 1.457 -0.453 0.000
F4 -0.235 -1.313 1.096
F5 -0.235 -1.313 -1.096
F6 -0.235 1.455 -1.110
F7 -0.235 1.455 1.110
H8 -1.698 0.622 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.54711.34451.35201.35202.36722.36722.1955
C21.54712.39792.37112.37111.36491.36491.0932
F31.34452.39792.19192.19192.78162.78163.3341
F41.35202.37112.19192.19153.53872.76752.6619
F51.35202.37112.19192.19152.76753.53872.6619
F62.36721.36492.78163.53872.76752.21912.0162
F72.36721.36492.78162.76753.53872.21912.0162
H82.19551.09323.33412.66192.66192.01622.0162

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.607 C1 C2 F7 108.607
C1 C2 H8 111.352 C2 C1 F3 111.859
C2 C1 F4 109.560 C2 C1 F5 109.560
F3 C1 F4 108.753 F3 C1 F5 108.753
F4 C1 F5 108.282 F6 C2 F7 108.770
F6 C2 H8 109.726 F7 C2 H8 109.726
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability