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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-116.595889
Energy at 298.15K-116.599127
HF Energy-116.595889
Nuclear repulsion energy63.939045
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 mPW1PW91/6-31G**
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 3347 3184 0.01 133.35 0.13 0.22
2 A1 3076 2926 68.77 130.26 0.15 0.26
3 A1 1771 1685 11.06 35.85 0.19 0.32
4 A1 1545 1470 4.30 15.84 0.32 0.49
5 A1 1200 1142 0.95 8.92 0.20 0.33
6 A1 941 896 4.02 8.56 0.67 0.80
7 A2 1031 981 0.00 16.10 0.75 0.86
8 A2 869 827 0.00 0.00 0.75 0.86
9 B1 3142 2990 55.92 90.00 0.75 0.86
10 B1 1126 1072 1.60 3.33 0.75 0.86
11 B1 613 583 71.09 1.49 0.75 0.86
12 B2 3300 3140 0.01 69.96 0.75 0.86
13 B2 1093 1040 36.77 0.39 0.75 0.86
14 B2 1051 1000 23.60 0.02 0.75 0.86
15 B2 825 785 14.89 18.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12464.9 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 11860.3 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 mPW1PW91/6-31G**
ABC
1.00725 0.73652 0.46475

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.857
C2 0.000 0.647 -0.499
C3 0.000 -0.647 -0.499
H4 0.000 1.580 -1.037
H5 0.000 -1.580 -1.037
H6 0.912 0.000 1.458
H7 -0.912 0.000 1.458

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50171.50172.46602.46601.09241.0924
C21.50171.29301.07722.29022.25372.2537
C31.50171.29302.29021.07722.25372.2537
H42.46601.07722.29023.15903.09073.0907
H52.46602.29021.07723.15903.09073.0907
H61.09242.25372.25373.09073.09071.8238
H71.09242.25372.25373.09073.09071.8238

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.499 C1 C2 H4 145.484
C1 C3 C2 64.499 C1 C3 H5 145.484
C2 C1 C3 51.002 C2 C1 H6 119.802
C2 C1 H7 119.802 C2 C3 H5 150.017
C3 C1 H6 119.802 C3 C1 H7 119.802
C3 C2 H4 150.017 H6 C1 H7 113.177
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.290      
2 C -0.111      
3 C -0.111      
4 H 0.135      
5 H 0.135      
6 H 0.121      
7 H 0.121      


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 -0.515 0.515
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.938 0.000 0.000
y 0.000 -16.428 0.000
z 0.000 0.000 -18.005
Traceless
 xyz
x -1.721 0.000 0.000
y 0.000 2.043 0.000
z 0.000 0.000 -0.322
Polar
3z2-r2-0.643
x2-y2-2.509
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.766 0.000 0.000
y 0.000 4.661 0.000
z 0.000 0.000 4.737


<r2> (average value of r2) Å2
<r2> 36.572
(<r2>)1/2 6.047