return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H3 (vinyl)

using model chemistry: MP3=FULL/aug-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 MP3=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-77.769753
Energy at 298.15K-77.771328
HF Energy-77.419698
Nuclear repulsion energy28.882551
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 MP3=FULL/aug-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' 3316 3316 0.90      
2 A' 3236 3236 0.93      
3 A' 3149 3149 2.07      
4 A' 1886 1886 3.87      
5 A' 1440 1440 9.65      
6 A' 1085 1085 7.92      
7 A' 718 718 19.12      
8 A" 1053 1053 72.61      
9 A" 967 967 27.53      

Unscaled Zero Point Vibrational Energy (zpe) 8424.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8424.5 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 MP3=FULL/aug-cc-pVTZ
ABC
7.96685 1.12931 0.98910

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.049 0.706 0.000
C2 0.049 -0.576 0.000
H3 -0.666 1.504 0.000
H4 -0.880 -1.134 0.000
H5 0.962 -1.147 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.28171.07162.06072.0661
C21.28172.19971.08311.0776
H31.07162.19972.64723.1117
H42.06071.08312.64721.8419
H52.06611.07763.11171.8419

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.017 C1 C2 H5 122.022
C2 C1 H3 138.192 H4 C2 H5 116.961
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability