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 HCCCl (Chloroacetylene)

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 C*V 1Σ
Energy calculated at PBE1PBE/6-31G*
 hartrees
Energy at 0K-536.651349
Energy at 298.15K-536.650831
HF Energy-536.651349
Nuclear repulsion energy74.392712
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 Σ 3521 3346 90.62      
2 Σ 2246 2134 34.57      
3 Σ 777 738 10.98      
4 Π 603 573 48.69      
4 Π 603 573 48.69      
5 Π 321 305 0.45      
5 Π 321 305 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 4195.6 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 3987.1 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/6-31G*
B
0.18913

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.817
C2 0.000 0.000 -0.612
Cl3 0.000 0.000 1.027
H4 0.000 0.000 -2.884

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.20492.84411.0667
C21.20491.63922.2715
Cl32.84411.63923.9107
H41.06672.27153.9107

picture of Chloroacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl3 180.000 C2 C1 H4 180.000
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 -0.325      
2 C -0.042      
3 Cl 0.130      
4 H 0.238      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.560 0.560
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.409 0.000 0.000
y 0.000 -24.409 0.000
z 0.000 0.000 -17.232
Traceless
 xyz
x -3.589 0.000 0.000
y 0.000 -3.589 0.000
z 0.000 0.000 7.177
Polar
3z2-r214.354
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.920 0.000 0.000
y 0.000 1.920 0.000
z 0.000 0.000 7.276


<r2> (average value of r2) Å2
<r2> 62.056
(<r2>)1/2 7.878