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 CCl3CHO (trichloroacetaldehyde)

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-71.572954
Energy at 298.15K-71.574217
HF Energy-71.123843
Nuclear repulsion energy112.472140
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' 3026 2953 24.11      
2 A' 1559 1522 68.41      
3 A' 1402 1368 5.58      
4 A' 1029 1005 22.13      
5 A' 812 792 73.79      
6 A' 584 570 64.05      
7 A' 404 394 3.50      
8 A' 296 289 4.74      
9 A' 256 250 1.90      
10 A' 194 189 2.71      
11 A" 999 975 36.78      
12 A" 681 664 103.65      
13 A" 309 301 1.68      
14 A" 229 223 1.65      
15 A" 69 68 9.17      

Unscaled Zero Point Vibrational Energy (zpe) 5923.4 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 5781.2 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
0.05628 0.05012 0.04608

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 0.058 0.023 0.000
C2 0.962 -1.256 0.000
O3 0.513 -2.433 0.000
Cl4 -1.748 -0.386 0.000
Cl5 0.513 1.013 1.534
Cl6 0.513 1.013 -1.534
H7 2.042 -1.021 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 Cl5 Cl6 H7
C11.56602.49731.85171.88151.88152.2417
C21.56601.25992.84612.77542.77541.1052
O32.49731.25993.04923.77193.77192.0817
Cl41.85172.84613.04923.06943.06943.8426
Cl51.88152.77543.77193.06943.06772.9712
Cl61.88152.77543.77193.06943.06772.9712
H72.24171.10522.08173.84262.97122.9712

picture of trichloroacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 123.834 C1 C2 H7 112.978
C2 C1 Cl4 112.499 C2 C1 Cl5 106.876
C2 C1 Cl6 106.876 O3 C2 H7 123.189
Cl4 C1 Cl5 110.605 Cl4 C1 Cl6 110.605
Cl5 C1 Cl6 109.218
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability