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All results from a given calculation for HCCCl (Chloroacetylene)

using model chemistry: MP2/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 MP2/CEP-31G
 hartrees
Energy at 0K-26.279399
Energy at 298.15K-26.278638
HF Energy-26.070859
Nuclear repulsion energy23.814584
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/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 3462 3345 55.36      
2 Σ 2036 1967 14.62      
3 Σ 663 640 3.57      
4 Π 626 605 70.99      
4 Π 626 605 70.99      
5 Π 232 224 1.77      
5 Π 232 224 1.77      

Unscaled Zero Point Vibrational Energy (zpe) 3937.8 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 3805.1 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/CEP-31G
B
0.16818

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.930
C2 0.000 0.000 -0.657
Cl3 0.000 0.000 1.090
H4 0.000 0.000 -3.005

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.27293.01971.0756
C21.27291.74682.3485
Cl33.01971.74684.0953
H41.07562.34854.0953

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