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: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-1530.419020
Energy at 298.15K-1530.420613
HF Energy-1529.580506
Nuclear repulsion energy432.854857
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 MP2/6-31G**
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' 3084 2888 31.83      
2 A' 1802 1687 86.23      
3 A' 1426 1336 8.67      
4 A' 1081 1013 30.04      
5 A' 900 843 92.15      
6 A' 650 609 59.20      
7 A' 460 431 2.58      
8 A' 331 310 3.95      
9 A' 284 266 1.52      
10 A' 211 197 3.03      
11 A" 1036 970 31.71      
12 A" 792 742 119.59      
13 A" 337 316 1.98      
14 A" 259 242 1.58      
15 A" 77 72 6.10      

Unscaled Zero Point Vibrational Energy (zpe) 6365.4 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 5961.2 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 MP2/6-31G**
ABC
0.06200 0.05484 0.05079

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.042 0.049 0.000
C2 0.923 -1.218 0.000
O3 0.487 -2.348 0.000
Cl4 -1.661 -0.354 0.000
Cl5 0.487 0.964 1.456
Cl6 0.487 0.964 -1.456
H7 1.995 -0.971 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 Cl5 Cl6 H7
C11.54352.43791.75051.77591.77592.2037
C21.54351.21092.72502.65902.65901.1004
O32.43791.21092.93083.61753.61752.0423
Cl41.75052.72502.93082.91072.91073.7083
Cl51.77592.65903.61752.91072.91152.8527
Cl61.77592.65903.61752.91072.91152.8527
H72.20371.10042.04233.70832.85272.8527

picture of trichloroacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 124.079 C1 C2 H7 111.828
C2 C1 Cl4 111.487 C2 C1 Cl5 106.250
C2 C1 Cl6 106.250 O3 C2 H7 124.093
Cl4 C1 Cl5 111.255 Cl4 C1 Cl6 111.255
Cl5 C1 Cl6 110.113
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability