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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: B3LYP/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at B3LYP/cc-pVQZ
 hartrees
Energy at 0K-116.674336
Energy at 298.15K-116.677550
HF Energy-116.674336
Nuclear repulsion energy64.029167
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/cc-pVQZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3292 3189 0.03 149.58 0.13 0.23
2 A1 3037 2942 73.51 152.88 0.13 0.24
3 A1 1732 1678 16.82 50.87 0.11 0.20
4 A1 1525 1478 2.00 13.96 0.20 0.34
5 A1 1149 1113 0.30 14.59 0.12 0.22
6 A1 925 896 4.01 4.95 0.60 0.75
7 A2 1018 986 0.00 4.61 0.75 0.86
8 A2 873 846 0.00 0.30 0.75 0.86
9 B1 3098 3001 43.96 106.39 0.75 0.86
10 B1 1115 1080 1.74 0.56 0.75 0.86
11 B1 602 583 78.77 0.37 0.75 0.86
12 B2 3247 3145 0.07 80.17 0.75 0.86
13 B2 1075 1041 19.66 0.00 0.75 0.86
14 B2 1039 1007 41.08 0.01 0.75 0.86
15 B2 784 760 14.55 14.86 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12255.0 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 11872.6 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/cc-pVQZ
ABC
1.01790 0.73271 0.46532

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.861
C2 0.000 0.643 -0.500
C3 0.000 -0.643 -0.500
H4 0.000 1.571 -1.041
H5 0.000 -1.571 -1.041
H6 0.910 0.000 1.456
H7 -0.910 0.000 1.456

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50531.50532.46642.46641.08741.0874
C21.50531.28581.07372.27852.25132.2513
C31.50531.28582.27851.07372.25132.2513
H42.46641.07372.27853.14113.08693.0869
H52.46642.27851.07373.14113.08693.0869
H61.08742.25132.25133.08693.08691.8204
H71.08742.25132.25133.08693.08691.8204

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.717 C1 C2 H4 145.516
C1 C3 C2 64.717 C1 C3 H5 145.516
C2 C1 C3 50.566 C2 C1 H6 119.653
C2 C1 H7 119.653 C2 C3 H5 149.767
C3 C1 H6 119.653 C3 C1 H7 119.653
C3 C2 H4 149.767 H6 C1 H7 113.655
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.112      
2 C -0.146      
3 C -0.146      
4 H 0.130      
5 H 0.130      
6 H 0.071      
7 H 0.071      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.484 0.484
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.534 0.000 0.000
y 0.000 -16.999 0.000
z 0.000 0.000 -18.731
Traceless
 xyz
x -1.669 0.000 0.000
y 0.000 2.134 0.000
z 0.000 0.000 -0.465
Polar
3z2-r2-0.930
x2-y2-2.535
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.864 0.000 0.000
y 0.000 5.373 0.000
z 0.000 0.000 5.547


<r2> (average value of r2) Å2
<r2> 36.911
(<r2>)1/2 6.075