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All results from a given calculation for C2H3 (vinyl)

using model chemistry: QCISD/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-77.735311
Energy at 298.15K-77.736835
HF Energy-77.418484
Nuclear repulsion energy28.428092
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/6-311+G(3df,2p)
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' 3268 3116 0.55      
2 A' 3196 3048 2.52      
3 A' 3093 2950 3.12      
4 A' 1654 1578 1.98      
5 A' 1411 1346 7.07      
6 A' 1079 1029 7.47      
7 A' 734 700 17.25      
8 A" 939 895 72.08      
9 A" 842 803 10.57      

Unscaled Zero Point Vibrational Energy (zpe) 8108.3 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 7732.9 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/6-311+G(3df,2p)
ABC
7.82456 1.08758 0.95486

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.050 0.723 0.000
C2 0.050 -0.588 0.000
H3 -0.685 1.512 0.000
H4 -0.880 -1.155 0.000
H5 0.968 -1.165 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.31071.07852.09592.0989
C21.31072.22501.08961.0842
H31.07852.22502.67483.1461
H42.09591.08962.67481.8482
H52.09891.08423.14611.8482

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.386 C1 C2 H5 122.141
C2 C1 H3 137.060 H4 C2 H5 116.474
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability