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All results from a given calculation for CF3CHO (trifluoroacetaldehyde)

using model chemistry: CISD/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 CISD/3-21G*
 hartrees
Energy at 0K-447.596876
Energy at 298.15K-447.599278
HF Energy-447.021625
Nuclear repulsion energy249.890108
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/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' 3160 2952 32.01      
2 A' 1829 1709 32.44      
3 A' 1507 1408 54.56      
4 A' 1373 1283 115.46      
5 A' 1299 1213 181.21      
6 A' 860 804 34.08      
7 A' 710 664 36.86      
8 A' 522 487 24.24      
9 A' 439 411 6.17      
10 A' 246 230 7.62      
11 A" 1329 1242 250.66      
12 A" 1063 993 2.99      
13 A" 530 495 5.92      
14 A" 301 281 0.32      
15 A" 65 61 14.31      

Unscaled Zero Point Vibrational Energy (zpe) 7616.2 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 7116.5 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 CISD/3-21G*
ABC
0.17727 0.09812 0.09636

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 0.355 0.000
C2 0.508 -1.084 0.000
O3 -0.245 -2.042 0.000
F4 -1.329 0.430 0.000
F5 0.508 0.999 1.100
F6 0.508 0.999 -1.100
H7 1.595 -1.150 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 F4 F5 F6 H7
C11.51972.41161.35271.36461.36462.1774
C21.51971.21802.38132.35632.35631.0885
O32.41161.21802.69933.32033.32032.0444
F41.35272.38132.69932.21602.21603.3237
F51.36462.35633.32032.21602.20022.6476
F61.36462.35633.32032.21602.20022.6476
H72.17741.08852.04443.32372.64762.6476

picture of trifluoroacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 123.118 C1 C2 H7 112.134
C2 C1 F4 111.866 C2 C1 F5 109.437
C2 C1 F6 109.437 O3 C2 H7 124.748
F4 C1 F5 109.275 F4 C1 F6 109.275
F5 C1 F6 107.447
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability