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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-533.336039
Energy at 298.15K-533.335809
HF Energy-533.089602
Nuclear repulsion energy71.521339
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 3466 3370 56.73      
2 Σ 2203 2142 4.68      
3 Σ 644 627 1.91      
4 Π 779 757 31.30      
4 Π 779 757 31.30      
5 Π 400 389 10.76      
5 Π 400 389 10.76      

Unscaled Zero Point Vibrational Energy (zpe) 4335.8 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 4215.7 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
0.17418

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 -1.881
C2 0.000 0.000 -0.672
Cl3 0.000 0.000 1.075
H4 0.000 0.000 -2.947

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.20932.95621.0660
C21.20931.74692.2753
Cl32.95621.74694.0222
H41.06602.27534.0222

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