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All results from a given calculation for C2H3 (vinyl)

using model chemistry: CCD/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 CCD/cc-pVTZ
 hartrees
Energy at 0K-77.729673
Energy at 298.15K-77.731259
HF Energy-77.419316
Nuclear repulsion energy28.750206
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 CCD/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' 3287 3069 0.75      
2 A' 3221 3007 2.44      
3 A' 3126 2918 2.42      
4 A' 1838 1716 2.84      
5 A' 1437 1341 9.08      
6 A' 1096 1023 9.23      
7 A' 743 694 19.24      
8 A" 1047 978 71.24      
9 A" 965 901 25.77      

Unscaled Zero Point Vibrational Energy (zpe) 8379.3 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 7823.8 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 CCD/cc-pVTZ
ABC
7.87081 1.11969 0.98024

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.049 0.710 0.000
C2 0.049 -0.578 0.000
H3 -0.677 1.504 0.000
H4 -0.881 -1.141 0.000
H5 0.967 -1.153 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.28781.07702.07122.0764
C21.28782.20581.08731.0826
H31.07702.20582.65313.1250
H42.07121.08732.65311.8477
H52.07641.08263.12501.8477

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.162 C1 C2 H5 122.081
C2 C1 H3 137.557 H4 C2 H5 116.757
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability