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All results from a given calculation for HCCCl (Chloroacetylene)

using model chemistry: CCSD/6-31G*

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 CCSD/6-31G*
 hartrees
Energy at 0K-536.107942
Energy at 298.15K-536.107124
HF Energy-535.705854
Nuclear repulsion energy73.862243
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 CCSD/6-31G*
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 3502 3307 69.99      
2 Σ 2223 2100 17.79      
3 Σ 757 715 7.75      
4 Π 551 520 46.40      
4 Π 551 520 46.40      
5 Π 232 219 0.14      
5 Π 232 219 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 4023.3 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 3799.2 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 CCSD/6-31G*
B
0.18638

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.829
C2 0.000 0.000 -0.620
Cl3 0.000 0.000 1.035
H4 0.000 0.000 -2.898

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.20962.86381.0685
C21.20961.65422.2781
Cl32.86381.65423.9322
H41.06852.27813.9322

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