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All results from a given calculation for HCCCl (Chloroacetylene)

using model chemistry: mPW1PW91/3-21G

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 mPW1PW91/3-21G
 hartrees
Energy at 0K-534.265428
Energy at 298.15K-534.265332
HF Energy-534.265428
Nuclear repulsion energy72.885472
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 mPW1PW91/3-21G
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 3531 3371 91.79      
2 Σ 2267 2164 18.51      
3 Σ 698 666 5.91      
4 Π 851 812 37.95      
4 Π 851 812 37.95      
5 Π 433 414 14.07      
5 Π 433 414 14.07      

Unscaled Zero Point Vibrational Energy (zpe) 4532.2 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 4326.5 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 mPW1PW91/3-21G
B
0.18116

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.848
C2 0.000 0.000 -0.649
Cl3 0.000 0.000 1.052
H4 0.000 0.000 -2.909

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.19942.90081.0605
C21.19941.70142.2598
Cl32.90081.70143.9612
H41.06052.25983.9612

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 mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.436      
2 C -0.267      
3 Cl 0.411      
4 H 0.293      


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 -0.895 0.895
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.983 0.000 0.000
y 0.000 -24.983 0.000
z 0.000 0.000 -17.539
Traceless
 xyz
x -3.722 0.000 0.000
y 0.000 -3.722 0.000
z 0.000 0.000 7.444
Polar
3z2-r214.888
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 1.302 0.000 0.000
y 0.000 1.302 0.000
z 0.000 0.000 6.816


<r2> (average value of r2) Å2
<r2> 64.370
(<r2>)1/2 8.023