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/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-498.597729
Energy at 298.15K-498.597600
HF Energy-498.597729
Nuclear repulsion energy38.856682
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/cc-pVTZ
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' 2918 2804 67.33      
2 A' 1230 1182 8.31      
3 A' 837 805 86.96      

Unscaled Zero Point Vibrational Energy (zpe) 2492.3 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 2395.1 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 PBE1PBE/cc-pVTZ
ABC
15.74124 0.60592 0.58346

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.045 1.188 0.000
Cl2 0.045 -0.503 0.000
H3 -1.042 1.419 0.000

Atom - Atom Distances (Å)
  C1 Cl2 H3
C11.69071.1117
Cl21.69072.2079
H31.11172.2079

picture of Chloromethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 H3 101.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.162      
2 Cl 0.046      
3 H 0.116      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.447 -0.679 0.000 1.598
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.449 -2.624 0.000
y -2.624 -19.938 0.000
z 0.000 0.000 -17.993
Traceless
 xyz
x -0.483 -2.624 0.000
y -2.624 -1.217 0.000
z 0.000 0.000 1.701
Polar
3z2-r23.401
x2-y20.489
xy-2.624
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.939 -0.242 0.000
y -0.242 5.053 0.000
z 0.000 0.000 2.486


<r2> (average value of r2) Å2
<r2> 27.856
(<r2>)1/2 5.278

State 2 (3A")

Jump to S1C1
Energy calculated at PBE1PBE/cc-pVTZ
 hartrees
Energy at 0K-498.599235
Energy at 298.15K-498.599089
HF Energy-498.599235
Nuclear repulsion energy39.214446
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/cc-pVTZ
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' 958 920 1.44      
2 A' 911 876 45.66      
3 A' 3209 3084 5.57      

Unscaled Zero Point Vibrational Energy (zpe) 2538.8 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 2439.8 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/cc-pVTZ
ABC
26.05081 0.60131 0.58775

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.036 1.145 0.000
Cl2 0.036 -0.510 0.000
H3 -0.831 1.793 0.000

Atom - Atom Distances (Å)
  C1 Cl2 H3
C11.65431.0830
Cl21.65432.4609
H31.08302.4609

picture of Chloromethylene state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 H3 126.799
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.176      
2 Cl 0.019      
3 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.725 0.311 0.000 0.789
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.374 -1.463 0.000
y -1.463 -17.020 0.000
z 0.000 0.000 -19.510
Traceless
 xyz
x -0.109 -1.463 0.000
y -1.463 1.922 0.000
z 0.000 0.000 -1.813
Polar
3z2-r2-3.626
x2-y2-1.354
xy-1.463
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.543 -0.164 0.000
y -0.164 4.782 0.000
z 0.000 0.000 2.298


<r2> (average value of r2) Å2
<r2> 27.645
(<r2>)1/2 5.258