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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: B3PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at B3PW91/6-311G**
 hartrees
Energy at 0K-116.606431
Energy at 298.15K-116.609655
HF Energy-116.606431
Nuclear repulsion energy63.917106
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 B3PW91/6-311G**
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 3306 3184 0.02 138.39 0.14 0.25
2 A1 3041 2929 73.97 143.41 0.16 0.27
3 A1 1740 1676 13.08 41.78 0.17 0.29
4 A1 1516 1460 2.14 13.83 0.26 0.41
5 A1 1172 1129 0.65 10.58 0.19 0.32
6 A1 923 889 5.62 5.32 0.61 0.75
7 A2 1018 980 0.00 9.18 0.75 0.86
8 A2 872 840 0.00 0.14 0.75 0.86
9 B1 3107 2992 54.10 101.46 0.75 0.86
10 B1 1109 1068 1.62 2.05 0.75 0.86
11 B1 611 588 83.62 0.75 0.75 0.86
12 B2 3258 3138 0.07 75.13 0.75 0.86
13 B2 1071 1031 33.73 0.21 0.75 0.86
14 B2 1032 994 30.31 0.00 0.75 0.86
15 B2 805 776 18.17 16.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12290.1 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 11836.6 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 B3PW91/6-311G**
ABC
1.00969 0.73357 0.46427

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.860
C2 0.000 0.645 -0.499
C3 0.000 -0.645 -0.499
H4 0.000 1.578 -1.039
H5 0.000 -1.578 -1.039
H6 0.914 0.000 1.457
H7 -0.914 0.000 1.457

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50461.50462.46882.46881.09191.0919
C21.50461.29081.07722.28752.25402.2540
C31.50461.29082.28751.07722.25402.2540
H42.46881.07722.28753.15503.09143.0914
H52.46882.28751.07723.15503.09143.0914
H61.09192.25402.25403.09143.09141.8276
H71.09192.25402.25403.09143.09141.8276

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.599 C1 C2 H4 145.479
C1 C3 C2 64.599 C1 C3 H5 145.479
C2 C1 C3 50.801 C2 C1 H6 119.633
C2 C1 H7 119.633 C2 C3 H5 149.922
C3 C1 H6 119.633 C3 C1 H7 119.633
C3 C2 H4 149.922 H6 C1 H7 113.627
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.223      
2 C -0.120      
3 C -0.120      
4 H 0.109      
5 H 0.109      
6 H 0.123      
7 H 0.123      


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 -0.497 0.497
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.292 0.000 0.000
y 0.000 -16.665 0.000
z 0.000 0.000 -18.360
Traceless
 xyz
x -1.779 0.000 0.000
y 0.000 2.161 0.000
z 0.000 0.000 -0.382
Polar
3z2-r2-0.763
x2-y2-2.627
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.135 0.000 0.000
y 0.000 4.950 0.000
z 0.000 0.000 5.095


<r2> (average value of r2) Å2
<r2> 36.790
(<r2>)1/2 6.065