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All results from a given calculation for HCCCl (Chloroacetylene)

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-533.340035
Energy at 298.15K-533.339789
HF Energy-533.089167
Nuclear repulsion energy71.416357
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/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 3452 3346 58.25      
2 Σ 2182 2114 4.11      
3 Σ 640 620 1.76      
4 Π 767 743 30.49      
4 Π 767 743 30.49      
5 Π 398 385 10.65      
5 Π 398 385 10.65      

Unscaled Zero Point Vibrational Energy (zpe) 4300.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 4168.5 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/3-21G
B
0.17367

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.885
C2 0.000 0.000 -0.673
Cl3 0.000 0.000 1.076
H4 0.000 0.000 -2.951

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.21192.96081.0668
C21.21191.74892.2787
Cl32.96081.74894.0275
H41.06682.27874.0275

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