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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-116.457921
Energy at 298.15K-116.461058
HF Energy-116.457921
Nuclear repulsion energy63.375510
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 PBEPBEultrafine/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 3240 3187 0.52 148.02 0.13 0.23
2 A1 2984 2935 70.85 130.99 0.15 0.26
3 A1 1708 1680 9.75 31.58 0.19 0.32
4 A1 1505 1480 4.75 17.38 0.33 0.49
5 A1 1160 1141 1.84 8.15 0.18 0.31
6 A1 906 891 3.90 9.60 0.67 0.80
7 A2 997 980 0.00 17.47 0.75 0.86
8 A2 815 802 0.00 0.04 0.75 0.86
9 B1 3043 2993 59.63 92.17 0.75 0.86
10 B1 1095 1077 1.09 3.80 0.75 0.86
11 B1 576 567 62.35 1.91 0.75 0.86
12 B2 3196 3143 1.49 79.59 0.75 0.86
13 B2 1047 1029 40.32 0.85 0.75 0.86
14 B2 997 981 20.66 0.07 0.75 0.86
15 B2 785 773 11.83 18.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12026.8 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 11828.4 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 PBEPBEultrafine/6-31G*
ABC
0.98820 0.72479 0.45680

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.863
C2 0.000 0.653 -0.502
C3 0.000 -0.653 -0.502
H4 0.000 1.595 -1.047
H5 0.000 -1.595 -1.047
H6 0.920 0.000 1.472
H7 -0.920 0.000 1.472

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51341.51342.48842.48841.10321.1032
C21.51341.30561.08812.31252.27352.2735
C31.51341.30562.31251.08812.27352.2735
H42.48841.08812.31253.18923.11993.1199
H52.48842.31251.08813.18923.11993.1199
H61.10322.27352.27353.11993.11991.8404
H71.10322.27352.27353.11993.11991.8404

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.448 C1 C2 H4 145.603
C1 C3 C2 64.448 C1 C3 H5 145.603
C2 C1 C3 51.104 C2 C1 H6 119.842
C2 C1 H7 119.842 C2 C3 H5 149.949
C3 C1 H6 119.842 C3 C1 H7 119.842
C3 C2 H4 149.949 H6 C1 H7 113.051
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.354      
2 C -0.116      
3 C -0.116      
4 H 0.148      
5 H 0.148      
6 H 0.145      
7 H 0.145      


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 -0.511 0.511
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.982 0.000 0.000
y 0.000 -16.605 0.000
z 0.000 0.000 -18.127
Traceless
 xyz
x -1.616 0.000 0.000
y 0.000 1.949 0.000
z 0.000 0.000 -0.333
Polar
3z2-r2-0.666
x2-y2-2.377
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.786 0.000 0.000
y 0.000 4.717 0.000
z 0.000 0.000 4.829


<r2> (average value of r2) Å2
<r2> 37.097
(<r2>)1/2 6.091