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 CHCl2CHO (dichloroacetaldehyde)

using model chemistry: ROHF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at ROHF/3-21G*
 hartrees
Energy at 0K-1065.681755
Energy at 298.15K-1065.684434
HF Energy-1065.681755
Nuclear repulsion energy263.235915
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 ROHF/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' 3374 3065 2.03      
2 A' 3245 2948 29.28      
3 A' 1931 1754 127.95      
4 A' 1543 1401 5.18      
5 A' 1356 1232 7.68      
6 A' 1088 989 35.78      
7 A' 828 752 29.39      
8 A' 458 416 5.60      
9 A' 349 317 29.05      
10 A' 279 253 1.22      
11 A" 1372 1246 23.54      
12 A" 1148 1043 22.15      
13 A" 764 694 111.72      
14 A" 316 287 3.00      
15 A" 88 80 12.60      

Unscaled Zero Point Vibrational Energy (zpe) 9069.0 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 8239.2 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 ROHF/3-21G*
ABC
0.10563 0.09414 0.05235

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.330 0.211 0.000
C2 -0.922 1.073 0.000
H3 1.209 0.825 0.000
Cl4 0.330 -0.800 1.471
Cl5 0.330 -0.800 -1.471
O6 -0.881 2.273 0.000
H7 -1.839 0.500 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 Cl4 Cl5 O6 H7
C11.52041.07211.78481.78482.39162.1886
C21.52042.14582.69072.69071.20111.0808
H31.07212.14582.36152.36152.54293.0655
Cl41.78482.69072.36152.94143.61602.9259
Cl51.78482.69072.36152.94143.61602.9259
O62.39161.20112.54293.61603.61602.0152
H72.18861.08083.06552.92592.92592.0152

picture of dichloroacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O6 122.557 C1 C2 H7 113.492
C2 C1 H3 110.534 C2 C1 Cl4 108.731
C2 C1 Cl5 108.731 H3 C1 Cl4 108.932
H3 C1 Cl5 108.932 Cl4 C1 Cl5 110.981
O6 C2 H7 123.951
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.551      
2 C 0.394      
3 H 0.347      
4 Cl 0.025      
5 Cl 0.025      
6 O -0.482      
7 H 0.241      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.000 -0.682 0.000 0.682
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.023 2.941 0.000
y 2.941 -50.760 0.000
z 0.000 0.000 -44.125
Traceless
 xyz
x 6.419 2.941 0.000
y 2.941 -8.186 0.000
z 0.000 0.000 1.767
Polar
3z2-r23.534
x2-y29.737
xy2.941
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 193.570
(<r2>)1/2 13.913