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All results from a given calculation for CF3COOH (trifluoroacetic acid)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-522.270488
Energy at 298.15K-522.273609
HF Energy-521.487196
Nuclear repulsion energy330.702784
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 MP2/3-21G*
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' 3521 3349 54.56      
2 A' 1737 1653 128.64      
3 A' 1426 1356 24.80      
4 A' 1307 1244 135.67      
5 A' 1236 1176 169.07      
6 A' 1092 1039 297.51      
7 A' 763 726 1.44      
8 A' 643 611 65.46      
9 A' 576 548 20.56      
10 A' 419 399 0.35      
11 A' 382 363 2.44      
12 A' 226 215 1.05      
13 A" 1274 1212 240.29      
14 A" 762 725 20.75      
15 A" 612 582 168.17      
16 A" 489 465 0.16      
17 A" 233 222 0.07      
18 A" 36 34 0.85      

Unscaled Zero Point Vibrational Energy (zpe) 8366.1 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 7958.6 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 MP2/3-21G*
ABC
0.12142 0.08200 0.06727

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.091 0.584 0.000
C2 -0.313 -0.890 0.000
O3 0.839 -1.642 0.000
O4 -1.466 -1.323 0.000
F5 -1.039 1.357 0.000
F6 0.839 0.886 1.111
F7 0.839 0.886 -1.111
H8 0.601 -2.609 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 F5 F6 F7 H8
C11.52822.34812.46171.36881.37311.37313.2333
C21.52821.37501.23192.36142.39052.39051.9466
O32.34811.37502.32643.53812.76132.76130.9956
O42.46171.23192.32642.71383.38023.38022.4342
F51.36882.36143.53812.71382.23212.23214.2914
F61.37312.39052.76133.38022.23212.22253.6748
F71.37312.39052.76133.38022.23212.22253.6748
H83.23331.94660.99562.43424.29143.67483.6748

picture of trifluoroacetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.845 C1 C2 O4 125.890
C2 C1 F5 109.073 C2 C1 F6 110.847
C2 C1 F7 110.847 C2 O3 H8 109.351
O3 C2 O4 126.265 F5 C1 F6 108.989
F5 C1 F7 108.989 F6 C1 F7 108.053
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability