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All results from a given calculation for HCCCl (Chloroacetylene)

using model chemistry: CCSD(T)/TZVP

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(T)/TZVP
 hartrees
Energy at 0K-536.198011
Energy at 298.15K-536.196786
HF Energy-535.756222
Nuclear repulsion energy73.740408
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(T)/TZVP
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 3495 3364        
2 Σ 2159 2078        
3 Σ 732 705        
4 Π 492 474        
4 Π 492 474        
5 Π 124 120        
5 Π 124 120        

Unscaled Zero Point Vibrational Energy (zpe) 3809.7 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 3666.8 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(T)/TZVP
B
0.18571

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.833
C2 0.000 0.000 -0.623
Cl3 0.000 0.000 1.037
H4 0.000 0.000 -2.896

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4
C11.20962.86981.0630
C21.20961.66022.2726
Cl32.86981.66023.9328
H41.06302.27263.9328

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