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All results from a given calculation for C2H3 (vinyl)

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-77.641015
Energy at 298.15K-77.642539
HF Energy-77.389792
Nuclear repulsion energy28.258311
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/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 A' 3277 3121 2.59      
2 A' 3213 3060 7.71      
3 A' 3112 2964 5.67      
4 A' 1668 1589 1.10      
5 A' 1434 1366 5.20      
6 A' 1104 1051 9.07      
7 A' 762 725 18.59      
8 A" 935 891 74.64      
9 A" 830 791 3.49      

Unscaled Zero Point Vibrational Energy (zpe) 8167.9 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 7778.3 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/6-31G*
ABC
7.70764 1.07501 0.94343

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.051 0.729 0.000
C2 0.051 -0.591 0.000
H3 -0.702 1.509 0.000
H4 -0.879 -1.169 0.000
H5 0.974 -1.169 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.31961.08432.11372.1108
C21.31962.23071.09491.0897
H31.08432.23072.68433.1597
H42.11371.09492.68431.8529
H52.11081.08973.15971.8529

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.911 C1 C2 H5 122.067
C2 C1 H3 136.013 H4 C2 H5 116.023
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability