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All results from a given calculation for CCl3CHO (trichloroacetaldehyde)

using model chemistry: QCISD/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 QCISD/3-21G*
 hartrees
Energy at 0K-1523.241704
Energy at 298.15K-1523.243161
HF Energy-1522.482156
Nuclear repulsion energy426.852868
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 QCISD/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3015 2898 28.12      
2 A' 1692 1626 58.20      
3 A' 1426 1370 6.07      
4 A' 979 941 35.78      
5 A' 845 812 60.88      
6 A' 625 600 60.83      
7 A' 430 414 2.68      
8 A' 319 307 3.33      
9 A' 270 260 2.05      
10 A' 209 201 2.66      
11 A" 1029 989 28.65      
12 A" 723 695 98.11      
13 A" 330 317 2.15      
14 A" 245 236 1.54      
15 A" 91 87 6.54      

Unscaled Zero Point Vibrational Energy (zpe) 6114.1 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 5876.2 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 QCISD/3-21G*
ABC
0.06085 0.05320 0.04909

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.052 0.046 0.000
C2 0.939 -1.239 0.000
O3 0.488 -2.384 0.000
Cl4 -1.674 -0.378 0.000
Cl5 0.488 0.989 1.473
Cl6 0.488 0.989 -1.473
H7 2.009 -0.983 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 Cl5 Cl6 H7
C11.56162.46901.77691.80311.80312.2115
C21.56161.23052.75122.70952.70951.1009
O32.46901.23052.94993.68153.68152.0684
Cl41.77692.75122.94992.95182.95183.7327
Cl51.80312.70953.68152.95182.94622.8940
Cl61.80312.70953.68152.95182.94622.8940
H72.21151.10092.06843.73272.89402.8940

picture of trichloroacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 123.903 C1 C2 H7 111.146
C2 C1 Cl4 110.830 C2 C1 Cl5 107.057
C2 C1 Cl6 107.057 O3 C2 H7 124.951
Cl4 C1 Cl5 111.083 Cl4 C1 Cl6 111.083
Cl5 C1 Cl6 109.571
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability