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: HF/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 HF/6-31G**
 hartrees
Energy at 0K-497.799199
Energy at 298.15K-497.799075
HF Energy-497.799199
Nuclear repulsion energy38.540525
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 HF/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' 3160 2852 67.50      
2 A' 1329 1199 8.17      
3 A' 841 759 142.43      

Unscaled Zero Point Vibrational Energy (zpe) 2664.7 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 2405.1 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 HF/6-31G**
ABC
16.46218 0.59269 0.57209

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.044 1.199 0.000
Cl2 0.044 -0.509 0.000
H3 -1.020 1.452 0.000

Atom - Atom Distances (Å)
  C1 Cl2 H3
C11.70771.0941
Cl21.70772.2313
H31.09412.2313

picture of Chloromethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 H3 103.384
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.122      
2 Cl -0.017      
3 H 0.139      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.651 -0.024 0.000 1.652
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.607 -2.803 0.000
y -2.803 -19.996 0.000
z 0.000 0.000 -18.041
Traceless
 xyz
x -0.588 -2.803 0.000
y -2.803 -1.172 0.000
z 0.000 0.000 1.761
Polar
3z2-r23.521
x2-y20.389
xy-2.803
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.163 -0.392 0.000
y -0.392 4.196 0.000
z 0.000 0.000 1.865


<r2> (average value of r2) Å2
<r2> 28.222
(<r2>)1/2 5.312

State 2 (3A")

Jump to S1C1
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-497.827749
Energy at 298.15K-497.827620
HF Energy-497.827749
Nuclear repulsion energy38.605871
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 HF/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' 3396 3066 7.71      
2 A' 1075 970 1.42      
3 A' 915 826 48.89      

Unscaled Zero Point Vibrational Energy (zpe) 2693.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 2430.9 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 HF/6-31G**
ABC
25.60875 0.58144 0.56853

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.036 1.169 0.000
Cl2 0.036 -0.518 0.000
H3 -0.836 1.792 0.000

Atom - Atom Distances (Å)
  C1 Cl2 H3
C11.68661.0724
Cl21.68662.4695
H31.07242.4695

picture of Chloromethylene state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 H3 125.557
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.162      
2 Cl -0.012      
3 H 0.174      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.666 1.042 0.000 1.237
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.502 -1.273 0.000
y -1.273 -16.774 0.000
z 0.000 0.000 -19.541
Traceless
 xyz
x -0.344 -1.273 0.000
y -1.273 2.247 0.000
z 0.000 0.000 -1.903
Polar
3z2-r2-3.806
x2-y2-1.728
xy-1.273
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.811 -0.272 0.000
y -0.272 3.795 0.000
z 0.000 0.000 1.437


<r2> (average value of r2) Å2
<r2> 28.110
(<r2>)1/2 5.302