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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-77.665140
Energy at 298.15K-77.666676
HF Energy-77.395712
Nuclear repulsion energy28.326721
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' 3319 3125 2.34      
2 A' 3263 3072 8.31      
3 A' 3159 2974 5.45      
4 A' 1676 1578 0.87      
5 A' 1442 1358 3.75      
6 A' 1115 1050 8.57      
7 A' 768 723 15.67      
8 A" 943 887 66.88      
9 A" 836 787 2.88      

Unscaled Zero Point Vibrational Energy (zpe) 8260.9 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 7776.8 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 QCISD/6-31G**
ABC
7.75471 1.07881 0.94706

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 -0.703 1.500 0.000
H4 -0.875 -1.164 0.000
H5 0.970 -1.164 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.31951.07882.10642.1041
C21.31952.22291.08831.0835
H31.07882.22292.66963.1462
H42.10641.08832.66961.8449
H52.10411.08353.14621.8449

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.758 C1 C2 H5 121.931
C2 C1 H3 135.677 H4 C2 H5 116.312
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability