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

using model chemistry: CBS-Q

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 CBS-Q
Rotational Constants (cm-1) from geometry optimized at CBS-Q
See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-115.724098
Energy at 298.15K-115.725887
HF Energy-115.191441
Nuclear repulsion energy58.337632
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 CBS-Q
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' 3486 3486 0.15      
2 A' 3232 3232 85.44      
3 A' 1812 1812 0.69      
4 A' 1320 1320 9.86      
5 A' 1120 1120 12.20      
6 A' 1011 1011 3.00      
7 A' 704 704 72.33      
8 A" 3429 3429 8.75      
9 A" 1136 1136 18.80      
10 A" 1089 1089 5.37      
11 A" 986 986        
12 A" 529 529 123.80      

Unscaled Zero Point Vibrational Energy (zpe) 9925.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9925.4 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 CBS-Q
ABC
1.04112 0.88082 0.49169

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.037 0.889 0.000
H2 0.744 1.642 0.000
C3 -0.037 -0.418 0.647
C4 -0.037 -0.418 -0.647
H5 -0.040 -0.979 1.558
H6 -0.040 -0.979 -1.558

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.08461.45901.45902.43272.4327
H21.08462.29642.29643.14823.1482
C31.45902.29641.29451.06962.2755
C41.45902.29641.29452.27551.0696
H52.43273.14821.06962.27553.1161
H62.43273.14822.27551.06963.1161

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 63.664 C1 C3 H5 147.954
C1 C4 C3 63.664 C1 C4 H6 147.954
H2 C1 C3 128.463 H2 C1 C4 128.463
C3 C1 C4 52.672 C3 C4 H6 148.381
C4 C3 H5 148.381
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability