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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G
 hartrees
Energy at 0K-116.436533
Energy at 298.15K-116.439796
HF Energy-116.436533
Nuclear repulsion energy63.494722
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/6-31G
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 3387 3238 0.10 129.41 0.12 0.21
2 A1 3110 2973 49.67 126.26 0.15 0.27
3 A1 1745 1668 8.83 34.81 0.20 0.34
4 A1 1566 1497 1.55 17.20 0.31 0.47
5 A1 1184 1132 0.48 8.66 0.20 0.34
6 A1 949 907 6.16 8.43 0.64 0.78
7 A2 1039 993 0.00 18.51 0.75 0.86
8 A2 888 849 0.00 0.06 0.75 0.86
9 B1 3185 3045 54.91 87.28 0.75 0.86
10 B1 1137 1087 1.43 3.87 0.75 0.86
11 B1 641 612 104.00 1.31 0.75 0.86
12 B2 3335 3188 0.28 66.78 0.75 0.86
13 B2 1132 1082 33.56 0.60 0.75 0.86
14 B2 1075 1027 39.80 0.16 0.75 0.86
15 B2 800 765 14.47 18.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12586.9 cm-1
Scaled (by 0.9559) Zero Point Vibrational Energy (zpe) 12031.8 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/6-31G
ABC
0.99726 0.72236 0.45698

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.868
C2 0.000 0.652 -0.504
C3 0.000 -0.652 -0.504
H4 0.000 1.581 -1.044
H5 0.000 -1.581 -1.044
H6 0.912 0.000 1.466
H7 -0.912 0.000 1.466

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51931.51932.48092.48091.09041.0904
C21.51931.30331.07452.29672.26692.2669
C31.51931.30332.29671.07452.26692.2669
H42.48091.07452.29673.16163.10333.1033
H52.48092.29671.07453.16163.10333.1033
H61.09042.26692.26693.10333.10331.8237
H71.09042.26692.26693.10333.10331.8237

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.603 C1 C2 H4 145.540
C1 C3 C2 64.603 C1 C3 H5 145.540
C2 C1 C3 50.795 C2 C1 H6 119.695
C2 C1 H7 119.695 C2 C3 H5 149.857
C3 C1 H6 119.695 C3 C1 H7 119.695
C3 C2 H4 149.857 H6 C1 H7 113.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.368      
2 C -0.158      
3 C -0.158      
4 H 0.181      
5 H 0.181      
6 H 0.160      
7 H 0.160      


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 -19.174 0.000 0.000
y 0.000 -16.748 0.000
z 0.000 0.000 -18.044
Traceless
 xyz
x -1.778 0.000 0.000
y 0.000 1.861 0.000
z 0.000 0.000 -0.082
Polar
3z2-r2-0.165
x2-y2-2.426
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.611 0.000 0.000
y 0.000 4.579 0.000
z 0.000 0.000 4.666


<r2> (average value of r2) Å2
<r2> 37.045
(<r2>)1/2 6.086