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All results from a given calculation for C2H3 (vinyl)

using model chemistry: QCISD/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 QCISD/cc-pVTZ
 hartrees
Energy at 0K-77.739170
Energy at 298.15K-77.740699
HF Energy-77.420190
Nuclear repulsion energy28.433875
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/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' 3267 3122 0.61      
2 A' 3200 3058 3.09      
3 A' 3098 2960 3.54      
4 A' 1659 1585 1.74      
5 A' 1414 1351 6.97      
6 A' 1084 1036 8.06      
7 A' 737 704 18.07      
8 A" 944 902 72.20      
9 A" 844 807 10.42      

Unscaled Zero Point Vibrational Energy (zpe) 8122.9 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 7761.5 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 QCISD/cc-pVTZ
ABC
7.80641 1.08846 0.95527

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

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 -0.688 1.509 0.000
H4 -0.880 -1.154 0.000
H5 0.969 -1.162 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.31121.07782.09442.0971
C21.31122.22311.08861.0832
H31.07782.22312.66943.1429
H42.09441.08862.66941.8490
H52.09711.08323.14291.8490

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.283 C1 C2 H5 121.999
C2 C1 H3 136.826 H4 C2 H5 116.719
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability