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All results from a given calculation for C2H3 (vinyl)

using model chemistry: QCISD(TQ)/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(TQ)/cc-pVTZ
 hartrees
Energy at 0K-77.753240
Energy at 298.15K-77.754755
HF Energy-77.420164
Nuclear repulsion energy28.332502
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(TQ)/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' 3252 3252        
2 A' 3183 3183        
3 A' 3078 3078        
4 A' 1622 1622        
5 A' 1405 1405        
6 A' 1085 1085        
7 A' 738 738        
8 A" 920 920        
9 A" 813 813        

Unscaled Zero Point Vibrational Energy (zpe) 8047.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8047.9 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(TQ)/cc-pVTZ
ABC
7.76543 1.07957 0.94781

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.050 0.726 0.000
C2 0.050 -0.591 0.000
H3 -0.690 1.512 0.000
H4 -0.882 -1.158 0.000
H5 0.971 -1.164 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.31761.07942.10202.1031
C21.31762.23011.09081.0849
H31.07942.23012.67723.1502
H42.10201.09082.67721.8534
H52.10311.08493.15021.8534

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.285 C1 C2 H5 121.878
C2 C1 H3 136.749 H4 C2 H5 116.837
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability