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

using model chemistry: G4

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 B3LYP/6-31G(2df,p)
Rotational Constants (cm-1) from geometry optimized at B3LYP/6-31G(2df,p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at G4
 hartrees
Energy at 0K-115.880020
Energy at 298.15K-115.881807
HF Energy-115.961472
Nuclear repulsion energy58.022421
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 B3LYP/6-31G(2df,p)
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' 3307 3191 0.02      
2 A' 3054 2947 58.68      
3 A' 1670 1612 0.18      
4 A' 1244 1200 9.68      
5 A' 1003 968 19.56      
6 A' 936 903 3.48      
7 A' 640 618 50.04      
8 A" 3259 3145 0.91      
9 A" 1046 1010 25.57      
10 A" 983 949 3.89      
11 A" 900 868 0.01      
12 A" 706 681 26.47      

Unscaled Zero Point Vibrational Energy (zpe) 9373.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9045.1 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 B3LYP/6-31G(2df,p)
ABC
1.06730 0.88920 0.49957

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.037 0.888 0.000
H2 0.744 1.653 0.000
C3 -0.037 -0.418 0.655
C4 -0.037 -0.418 -0.655
H5 -0.040 -0.983 1.572
H6 -0.040 -0.983 -1.572

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.09301.46151.46152.44372.4437
H21.09302.30842.30843.16743.1674
C31.46152.30841.31081.07672.2980
C41.46152.30841.31082.29801.0767
H52.44373.16741.07672.29803.1443
H62.44373.16742.29801.07673.1443

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 63.367 C1 C3 H5 148.271
C1 C4 C3 63.367 C1 C4 H6 148.271
H2 C1 C3 128.640 H2 C1 C4 128.640
C3 C1 C4 53.266 C3 C4 H6 148.362
C4 C3 H5 148.362
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.272      
2 H 0.110      
3 C -0.069      
4 C -0.069      
5 H 0.150      
6 H 0.150      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.578 -1.339 0.000 1.459
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 33.030
(<r2>)1/2 5.747