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: LSDA/6-31+G**

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 LSDA/6-31+G**
 hartrees
Energy at 0K-497.371877
Energy at 298.15K-497.371737
HF Energy-497.371877
Nuclear repulsion energy38.665251
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 LSDA/6-31+G**
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' 2796 2754 85.69      
2 A' 1186 1168 16.39      
3 A' 823 811 98.56      

Unscaled Zero Point Vibrational Energy (zpe) 2402.2 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 2366.2 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 LSDA/6-31+G**
ABC
15.16697 0.60149 0.57855

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.046 1.193 0.000
Cl2 0.046 -0.504 0.000
H3 -1.061 1.414 0.000

Atom - Atom Distances (Å)
  C1 Cl2 H3
C11.69781.1289
Cl21.69782.2148
H31.12892.2148

picture of Chloromethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 H3 101.255
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.365      
2 Cl 0.195      
3 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.679 -0.990 0.000 1.949
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.868 -3.002 0.000
y -3.002 -21.031 0.000
z 0.000 0.000 -18.270
Traceless
 xyz
x -0.218 -3.002 0.000
y -3.002 -1.962 0.000
z 0.000 0.000 2.179
Polar
3z2-r24.359
x2-y21.163
xy-3.002
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.052 -0.094 0.000
y -0.094 5.362 0.000
z 0.000 0.000 2.463


<r2> (average value of r2) Å2
<r2> 28.363
(<r2>)1/2 5.326

State 2 (3A")

Jump to S1C1
Energy calculated at LSDA/6-31+G**
 hartrees
Energy at 0K-497.366344
Energy at 298.15K-497.366189
HF Energy-497.366344
Nuclear repulsion energy39.202350
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 LSDA/6-31+G**
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' 928 914 21.13      
2 A' 916 902 35.09      
3 A' 3132 3085 5.78      

Unscaled Zero Point Vibrational Energy (zpe) 2488.0 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 2450.7 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 LSDA/6-31+G**
ABC
25.44050 0.60196 0.58804

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.037 1.143 0.000
Cl2 0.037 -0.509 0.000
H3 -0.842 1.800 0.000

Atom - Atom Distances (Å)
  C1 Cl2 H3
C11.65231.0968
Cl21.65232.4709
H31.09682.4709

picture of Chloromethylene state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 H3 126.814
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.367      
2 Cl 0.159      
3 H 0.208      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.956 -0.009 0.000 0.956
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.644 -1.871 0.000
y -1.871 -17.784 0.000
z 0.000 0.000 -19.966
Traceless
 xyz
x 0.231 -1.871 0.000
y -1.871 1.521 0.000
z 0.000 0.000 -1.752
Polar
3z2-r2-3.504
x2-y2-0.860
xy-1.871
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.427 -0.062 0.000
y -0.062 5.045 0.000
z 0.000 0.000 2.357


<r2> (average value of r2) Å2
<r2> 27.970
(<r2>)1/2 5.289