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All results from a given calculation for C3H3 (cyclopropenyl radical)

using model chemistry: CCSD(T)/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 2A'

Conformer 1 (D3H)

Jump to S1C2
Vibrational Frequencies calculated at CCSD(T)/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-115.728497
Energy at 298.15K-115.730166
HF Energy-115.233754
Nuclear repulsion energy57.790949
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 CCSD(T)/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3305 3222        
2 A' 3097 3019        
3 A' 1637 1595        
4 A' 1228 1197        
5 A' 995 969        
6 A' 926 902        
7 A' 593 578        
8 A" 3268 3186        
9 A" 1100 1073        
10 A" 988 963        
11 A" 909 886        
12 A" 854 832        

Unscaled Zero Point Vibrational Energy (zpe) 9449.4 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 9211.2 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 CCSD(T)/cc-pVTZ
ABC
1.05611 0.88343 0.49525

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.037 0.892 0.000
H2 0.742 1.652 0.000
C3 -0.037 -0.420 0.660
C4 -0.037 -0.420 -0.660
H5 -0.039 -0.982 1.577
H6 -0.039 -0.982 -1.577

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.08821.46901.46902.44962.4496
H21.08822.31022.31023.16803.1680
C31.46902.31021.31951.07572.3063
C41.46902.31021.31952.30631.0757
H52.44963.16801.07572.30633.1540
H62.44963.16802.30631.07573.1540

picture of cyclopropenyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 63.314 C1 C3 H5 148.176
C1 C4 C3 63.314 C1 C4 H6 148.176
H2 C1 C3 128.605 H2 C1 C4 128.605
C3 C1 C4 53.372 C3 C4 H6 148.510
C4 C3 H5 148.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability