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All results from a given calculation for HCCCl (Chloroacetylene)

using model chemistry: QCISD(T)/cc-pVDZ

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 QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-536.161446
Energy at 298.15K-536.160851
HF Energy-535.732226
Nuclear repulsion energy73.190517
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 QCISD(T)/cc-pVDZ
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 3468 3306        
2 Σ 2142 2041        
3 Σ 746 711        
4 Π 585 558        
4 Π 585 558        
5 Π 295 281        
5 Π 295 281        

Unscaled Zero Point Vibrational Energy (zpe) 4057.7 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 3867.4 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 QCISD(T)/cc-pVDZ
B
0.18302

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.848
C2 0.000 0.000 -0.621
Cl3 0.000 0.000 1.044
H4 0.000 0.000 -2.926

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.22732.89231.0779
C21.22731.66502.3052
Cl32.89231.66503.9702
H41.07792.30523.9702

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