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 HCCl (Chloromethylene)

using model chemistry: PBE1PBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
2 1 yes CS 3A"

State 1 (1A')

Jump to S2C1
Energy calculated at PBE1PBE/6-31G
 hartrees
Energy at 0K-498.500415
Energy at 298.15K-498.500235
HF Energy-498.500415
Nuclear repulsion energy36.409578
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 PBE1PBE/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' 2831 2706 120.34      
2 A' 1246 1191 12.53      
3 A' 704 673 116.44      

Unscaled Zero Point Vibrational Energy (zpe) 2390.4 cm-1
Scaled (by 0.9559) Zero Point Vibrational Energy (zpe) 2285.0 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 PBE1PBE/6-31G
ABC
15.02447 0.52677 0.50893

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.046 1.279 0.000
Cl2 0.046 -0.539 0.000
H3 -1.064 1.483 0.000

Atom - Atom Distances (Å)
  C1 Cl2 H3
C11.81761.1289
Cl21.81762.3061
H31.12892.3061

picture of Chloromethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 H3 100.385
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.211      
2 Cl 0.042      
3 H 0.169      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.733 0.170 0.000 1.741
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.672 -2.782 0.000
y -2.782 -20.230 0.000
z 0.000 0.000 -18.118
Traceless
 xyz
x -0.498 -2.782 0.000
y -2.782 -1.335 0.000
z 0.000 0.000 1.833
Polar
3z2-r23.665
x2-y20.558
xy-2.782
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.126 -0.398 0.000
y -0.398 4.963 0.000
z 0.000 0.000 1.571


<r2> (average value of r2) Å2
<r2> 30.206
(<r2>)1/2 5.496

State 2 (3A")

Jump to S1C1
Energy calculated at PBE1PBE/6-31G
 hartrees
Energy at 0K-498.508829
Energy at 298.15K-498.508658
HF Energy-498.508829
Nuclear repulsion energy37.379857
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 PBE1PBE/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' 987 944 0.74      
2 A' 812 776 51.86      
3 A' 3246 3103 4.55      

Unscaled Zero Point Vibrational Energy (zpe) 2522.6 cm-1
Scaled (by 0.9559) Zero Point Vibrational Energy (zpe) 2411.4 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 PBE1PBE/6-31G
ABC
24.45242 0.54387 0.53203

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.037 1.211 0.000
Cl2 0.037 -0.535 0.000
H3 -0.854 1.832 0.000

Atom - Atom Distances (Å)
  C1 Cl2 H3
C11.74681.0862
Cl21.74682.5298
H31.08622.5298

picture of Chloromethylene state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 H3 124.856
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.283      
2 Cl 0.075      
3 H 0.207      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.903 0.933 0.000 1.298
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.400 -1.599 0.000
y -1.599 -17.139 0.000
z 0.000 0.000 -19.578
Traceless
 xyz
x -0.042 -1.599 0.000
y -1.599 1.850 0.000
z 0.000 0.000 -1.808
Polar
3z2-r2-3.616
x2-y2-1.261
xy-1.599
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.547 -0.219 0.000
y -0.219 4.316 0.000
z 0.000 0.000 1.098


<r2> (average value of r2) Å2
<r2> 29.271
(<r2>)1/2 5.410