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All results from a given calculation for HCCCl (Chloroacetylene)

using model chemistry: MP2/STO-3G

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 MP2/STO-3G
 hartrees
Energy at 0K-530.006064
Energy at 298.15K-530.005502
HF Energy-529.842073
Nuclear repulsion energy71.617788
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 MP2/STO-3G
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 3731 3253 133.79      
2 Σ 2270 1980 0.02      
3 Σ 759 662 3.02      
4 Π 726 633 12.28      
4 Π 726 633 12.28      
5 Π 321 280 0.01      
5 Π 321 280 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 4427.2 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 3860.1 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 MP2/STO-3G
B
0.17493

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

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 -0.660
Cl3 0.000 0.000 1.071
H4 0.000 0.000 -2.962

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.22102.95181.0815
C21.22101.73092.3025
Cl32.95181.73094.0334
H41.08152.30254.0334

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