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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: B2PLYP/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at B2PLYP/6-311G*
 hartrees
Energy at 0K-116.503508
Energy at 298.15K-116.506701
HF Energy-116.368792
Nuclear repulsion energy63.748413
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 B2PLYP/6-311G*
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 3316 3316 0.08 146.20 0.15 0.26
2 A1 3071 3071 73.49 136.72 0.16 0.28
3 A1 1715 1715 15.53 34.33 0.19 0.32
4 A1 1546 1546 2.05 15.18 0.23 0.37
5 A1 1167 1167 0.46 10.37 0.18 0.31
6 A1 930 930 4.98 6.27 0.57 0.72
7 A2 1028 1028 0.00 9.95 0.75 0.86
8 A2 841 841 0.00 0.13 0.75 0.86
9 B1 3140 3140 57.65 98.59 0.75 0.86
10 B1 1126 1126 1.27 2.35 0.75 0.86
11 B1 583 583 84.34 0.83 0.75 0.86
12 B2 3270 3270 0.38 81.69 0.75 0.86
13 B2 1075 1075 34.66 0.46 0.75 0.86
14 B2 1038 1038 33.53 0.04 0.75 0.86
15 B2 790 790 14.63 15.82 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12317.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12317.2 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 B2PLYP/6-311G*
ABC
1.00523 0.72873 0.46125

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.864
C2 0.000 0.648 -0.501
C3 0.000 -0.648 -0.501
H4 0.000 1.578 -1.044
H5 0.000 -1.578 -1.044
H6 0.912 0.000 1.459
H7 -0.912 0.000 1.459

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51101.51102.47562.47561.08961.0896
C21.51101.29571.07672.29102.25752.2575
C31.51101.29572.29101.07672.25752.2575
H42.47561.07672.29103.15603.09653.0965
H52.47562.29101.07673.15603.09653.0965
H61.08962.25752.25753.09653.09651.8246
H71.08962.25752.25753.09653.09651.8246

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.610 C1 C2 H4 145.640
C1 C3 C2 64.610 C1 C3 H5 145.640
C2 C1 C3 50.779 C2 C1 H6 119.598
C2 C1 H7 119.598 C2 C3 H5 149.750
C3 C1 H6 119.598 C3 C1 H7 119.598
C3 C2 H4 149.750 H6 C1 H7 113.715
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.405      
2 C -0.202      
3 C -0.202      
4 H 0.204      
5 H 0.204      
6 H 0.200      
7 H 0.200      


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 -0.486 0.486
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.537 0.000 0.000
y 0.000 -16.952 0.000
z 0.000 0.000 -18.547
Traceless
 xyz
x -1.788 0.000 0.000
y 0.000 2.090 0.000
z 0.000 0.000 -0.302
Polar
3z2-r2-0.605
x2-y2-2.585
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.046 0.000 0.000
y 0.000 4.858 0.000
z 0.000 0.000 5.030


<r2> (average value of r2) Å2
<r2> 37.070
(<r2>)1/2 6.089