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All results from a given calculation for C2H3 (vinyl)

using model chemistry: CISD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at CISD/cc-pVTZ
 hartrees
Energy at 0K-77.711839
Energy at 298.15K-77.713419
HF Energy-77.419835
Nuclear repulsion energy28.686948
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 CISD/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3322 3089 0.60      
2 A' 3255 3026 2.90      
3 A' 3158 2937 3.04      
4 A' 1760 1636 2.21      
5 A' 1448 1346 8.19      
6 A' 1109 1031 8.95      
7 A' 754 702 18.21      
8 A" 1019 948 72.45      
9 A" 936 871 18.67      

Unscaled Zero Point Vibrational Energy (zpe) 8380.7 cm-1
Scaled (by 0.9298) Zero Point Vibrational Energy (zpe) 7792.4 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 CISD/cc-pVTZ
ABC
7.88316 1.11156 0.97419

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.050 0.714 0.000
C2 0.050 -0.581 0.000
H3 -0.683 1.500 0.000
H4 -0.877 -1.144 0.000
H5 0.965 -1.153 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.29531.07372.07652.0793
C21.29532.20581.08401.0793
H31.07372.20582.65103.1224
H42.07651.08402.65101.8417
H52.07931.07933.12241.8417

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.300 C1 C2 H5 121.982
C2 C1 H3 137.013 H4 C2 H5 116.718
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability