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All results from a given calculation for HCCCl (Chloroacetylene)

using model chemistry: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-533.539321
Energy at 298.15K-533.538874
HF Energy-533.205561
Nuclear repulsion energy73.530405
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 CCD/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 3457 3307 59.76      
2 Σ 2199 2104 10.19      
3 Σ 718 687 4.70      
4 Π 659 631 44.55      
4 Π 659 631 44.55      
5 Π 332 317 3.30      
5 Π 332 317 3.30      

Unscaled Zero Point Vibrational Energy (zpe) 4178.4 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 3996.7 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 CCD/3-21G*
B
0.18465

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.837
C2 0.000 0.000 -0.626
Cl3 0.000 0.000 1.040
H4 0.000 0.000 -2.904

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.21132.87751.0667
C21.21131.66622.2781
Cl32.87751.66623.9443
H41.06672.27813.9443

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