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All results from a given calculation for HCCCl (Chloroacetylene)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-26.077186
Energy at 298.15K-26.076977
HF Energy-26.077186
Nuclear repulsion energy24.523695
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/CEP-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 3681 3318 96.16      
2 Σ 2361 2128 19.46      
3 Σ 742 669 3.00      
4 Π 834 751 63.18      
4 Π 834 751 63.18      
5 Π 373 337 9.43      
5 Π 373 337 9.43      

Unscaled Zero Point Vibrational Energy (zpe) 4598.8 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 4145.3 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 HF/CEP-31G
B
0.17811

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.869
C2 0.000 0.000 -0.647
Cl3 0.000 0.000 1.060
H4 0.000 0.000 -2.926

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.22222.92971.0567
C21.22221.70752.2789
Cl32.92971.70753.9864
H41.05672.27893.9864

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 HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.334      
2 C -0.240      
3 Cl 0.192      
4 H 0.383      


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 -1.205 1.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.689 0.000 0.000
y 0.000 -24.689 0.000
z 0.000 0.000 -17.712
Traceless
 xyz
x -3.489 0.000 0.000
y 0.000 -3.489 0.000
z 0.000 0.000 6.977
Polar
3z2-r213.955
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 1.394 0.000 0.000
y 0.000 1.394 0.000
z 0.000 0.000 7.409


<r2> (average value of r2) Å2
<r2> 46.053
(<r2>)1/2 6.786