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All results from a given calculation for CHCl2CHO (dichloroacetaldehyde)

using model chemistry: QCISD(T)/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C1 1A

Conformer 1 (C1)

Jump to S1C2
Energy calculated at QCISD(T)/cc-pVTZ
 hartrees
Energy at 0K-1071.842863
Energy at 298.15K 
HF Energy-1070.835653
Nuclear repulsion energy264.788353
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(T)/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD(T)/cc-pVTZ
 hartrees
Energy at 0K-1071.841343
Energy at 298.15K 
HF Energy-1070.829968
Nuclear repulsion energy266.003413
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(T)/cc-pVTZ
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 3119 2959        
2 A 2969 2817        
3 A 1801 1709        
4 A 1400 1328        
5 A 1271 1206        
6 A 1222 1159        
7 A 1035 982        
8 A 942 893        
9 A 826 784        
10 A 651 618        
11 A 620 588        
12 A 343 325        
13 A 273 259        
14 A 218 207        
15 A 84 79        

Unscaled Zero Point Vibrational Energy (zpe) 8386.5 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 7955.5 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 QCISD(T)/cc-pVTZ
ABC
0.12413 0.08970 0.05528

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.100 -0.021 0.526
C2 -0.704 -1.284 0.201
H3 0.231 0.067 1.603
Cl4 1.733 -0.253 -0.171
Cl5 -0.682 1.446 -0.058
O6 -1.787 -1.288 -0.322
H7 -0.179 -2.208 0.501

Atom - Atom Distances (Å)
  C1 C2 H3 Cl4 Cl5 O6 H7
C11.53171.08821.79031.76202.42592.2046
C21.53172.15902.67142.74201.20311.1041
H31.08822.15902.34552.34433.10042.5601
Cl41.79032.67142.34552.95503.67182.8152
Cl51.76202.74202.34432.95502.96033.7303
O62.42591.20313.10043.67182.96032.0272
H72.20461.10412.56012.81523.73032.0272

picture of dichloroacetaldehyde state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O6 124.575 C1 C2 H7 112.518
C2 C1 H3 109.838 C2 C1 Cl4 106.801
C2 C1 Cl5 112.524 H3 C1 Cl4 106.586
H3 C1 Cl5 108.343 Cl4 C1 Cl5 112.573
O6 C2 H7 122.907
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability