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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: PBE1PBE/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 PBE1PBE/6-311G**
 hartrees
Energy at 0K-116.502662
Energy at 298.15K-116.505901
HF Energy-116.502662
Nuclear repulsion energy63.980985
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 PBE1PBE/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 3321 3187 0.10 136.91 0.14 0.25
2 A1 3055 2931 72.03 143.62 0.16 0.27
3 A1 1752 1681 12.54 42.56 0.17 0.29
4 A1 1519 1458 2.11 13.63 0.26 0.42
5 A1 1186 1138 0.63 10.69 0.19 0.32
6 A1 928 890 5.97 5.18 0.62 0.76
7 A2 1023 981 0.00 9.16 0.75 0.86
8 A2 878 842 0.00 0.11 0.75 0.86
9 B1 3122 2995 52.84 101.50 0.75 0.86
10 B1 1112 1067 1.67 1.99 0.75 0.86
11 B1 617 592 84.00 0.77 0.75 0.86
12 B2 3273 3140 0.30 73.81 0.75 0.86
13 B2 1077 1033 35.68 0.18 0.75 0.86
14 B2 1038 996 27.18 0.02 0.75 0.86
15 B2 818 785 19.85 16.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12359.3 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 11857.5 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 PBE1PBE/6-311G**
ABC
1.01035 0.73610 0.46542

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.858
C2 0.000 0.645 -0.499
C3 0.000 -0.645 -0.499
H4 0.000 1.578 -1.038
H5 0.000 -1.578 -1.038
H6 0.914 0.000 1.456
H7 -0.914 0.000 1.456

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50191.50192.46612.46611.09191.0919
C21.50191.29011.07712.28702.25152.2515
C31.50191.29012.28701.07712.25152.2515
H42.46611.07712.28703.15513.08873.0887
H52.46612.28701.07713.15513.08873.0887
H61.09192.25152.25153.08873.08871.8275
H71.09192.25152.25153.08873.08871.8275

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.565 C1 C2 H4 145.470
C1 C3 C2 64.565 C1 C3 H5 145.470
C2 C1 C3 50.869 C2 C1 H6 119.629
C2 C1 H7 119.629 C2 C3 H5 149.965
C3 C1 H6 119.629 C3 C1 H7 119.629
C3 C2 H4 149.965 H6 C1 H7 113.617
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.227      
2 C -0.120      
3 C -0.120      
4 H 0.109      
5 H 0.109      
6 H 0.124      
7 H 0.124      


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 -0.501 0.501
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.336 0.000 0.000
y 0.000 -16.670 0.000
z 0.000 0.000 -18.395
Traceless
 xyz
x -1.803 0.000 0.000
y 0.000 2.195 0.000
z 0.000 0.000 -0.392
Polar
3z2-r2-0.785
x2-y2-2.665
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 4.938 0.000
z 0.000 0.000 5.074


<r2> (average value of r2) Å2
<r2> 36.754
(<r2>)1/2 6.063