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/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-497.390167
Energy at 298.15K-497.390031
HF Energy-497.390167
Nuclear repulsion energy38.571625
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/cc-pVDZ
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' 2786 2755 89.41      
2 A' 1177 1164 6.94      
3 A' 832 823 77.58      

Unscaled Zero Point Vibrational Energy (zpe) 2397.4 cm-1
Scaled (by 0.989) Zero Point Vibrational Energy (zpe) 2371.1 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 LSDA/cc-pVDZ
ABC
14.83597 0.59951 0.57623

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.047 1.197 0.000
Cl2 0.047 -0.505 0.000
H3 -1.072 1.406 0.000

Atom - Atom Distances (Å)
  C1 Cl2 H3
C11.70161.1383
Cl21.70162.2146
H31.13832.2146

picture of Chloromethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 H3 100.607
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.199      
2 Cl 0.076      
3 H 0.123      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.460 -0.886 0.000 1.707
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.338 -2.480 0.000
y -2.480 -20.031 0.000
z 0.000 0.000 -17.852
Traceless
 xyz
x -0.397 -2.480 0.000
y -2.480 -1.436 0.000
z 0.000 0.000 1.832
Polar
3z2-r23.665
x2-y20.693
xy-2.480
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.497 -0.365 0.000
y -0.365 4.674 0.000
z 0.000 0.000 1.871


<r2> (average value of r2) Å2
<r2> 28.017
(<r2>)1/2 5.293

State 2 (3A")

Jump to S1C1
Energy calculated at LSDA/cc-pVDZ
 hartrees
Energy at 0K-497.383016
Energy at 298.15K-497.382859
HF Energy-497.383016
Nuclear repulsion energy39.076930
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/cc-pVDZ
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' 932 922 28.64      
2 A' 892 882 23.16      
3 A' 3111 3077 6.24      

Unscaled Zero Point Vibrational Energy (zpe) 2467.4 cm-1
Scaled (by 0.989) Zero Point Vibrational Energy (zpe) 2440.3 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/cc-pVDZ
ABC
24.56694 0.59901 0.58475

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.037 1.147 0.000
Cl2 0.037 -0.510 0.000
H3 -0.856 1.799 0.000

Atom - Atom Distances (Å)
  C1 Cl2 H3
C11.65711.1061
Cl21.65712.4761
H31.10612.4761

picture of Chloromethylene state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 H3 126.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.200      
2 Cl 0.070      
3 H 0.130      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.832 -0.001 0.000 0.832
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.228 -1.608 0.000
y -1.608 -17.169 0.000
z 0.000 0.000 -19.427
Traceless
 xyz
x 0.070 -1.608 0.000
y -1.608 1.658 0.000
z 0.000 0.000 -1.728
Polar
3z2-r2-3.455
x2-y2-1.059
xy-1.608
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.991 -0.236 0.000
y -0.236 4.532 0.000
z 0.000 0.000 1.576


<r2> (average value of r2) Å2
<r2> 27.733
(<r2>)1/2 5.266