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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-116.465232
Energy at 298.15K-116.468361
HF Energy-116.465232
Nuclear repulsion energy63.155569
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 PBEPBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3228 3210 0.06 172.08 0.13 0.23
2 A1 2965 2948 66.87 156.30 0.14 0.25
3 A1 1695 1686 9.82 38.47 0.18 0.31
4 A1 1442 1433 3.14 16.54 0.34 0.51
5 A1 1146 1139 1.71 10.71 0.19 0.33
6 A1 883 878 4.66 8.12 0.68 0.81
7 A2 975 969 0.00 12.20 0.75 0.86
8 A2 818 813 0.00 0.01 0.75 0.86
9 B1 3036 3018 50.58 108.75 0.75 0.86
10 B1 1059 1053 1.04 3.35 0.75 0.86
11 B1 580 576 58.40 1.57 0.75 0.86
12 B2 3181 3163 0.03 89.50 0.75 0.86
13 B2 1018 1012 35.25 0.09 0.75 0.86
14 B2 974 969 20.05 0.00 0.75 0.86
15 B2 772 768 14.12 18.70 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11886.2 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 11817.2 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 PBEPBE/cc-pVDZ
ABC
0.98047 0.72039 0.45405

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.866
C2 0.000 0.655 -0.503
C3 0.000 -0.655 -0.503
H4 0.000 1.601 -1.052
H5 0.000 -1.601 -1.052
H6 0.927 0.000 1.474
H7 -0.927 0.000 1.474

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51781.51782.49822.49821.10881.1088
C21.51781.30991.09352.32152.27982.2798
C31.51781.30992.32151.09352.27982.2798
H42.49821.09352.32153.20173.13083.1308
H52.49822.32151.09353.20173.13083.1308
H61.10882.27982.27983.13083.13081.8548
H71.10882.27982.27983.13083.13081.8548

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.437 C1 C2 H4 145.681
C1 C3 C2 64.437 C1 C3 H5 145.681
C2 C1 C3 51.127 C2 C1 H6 119.637
C2 C1 H7 119.637 C2 C3 H5 149.883
C3 C1 H6 119.637 C3 C1 H7 119.637
C3 C2 H4 149.883 H6 C1 H7 113.518
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.020      
2 C -0.017      
3 C -0.017      
4 H -0.004      
5 H -0.004      
6 H 0.031      
7 H 0.031      


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 -0.517 0.517
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.258 0.000 0.000
y 0.000 -16.805 0.000
z 0.000 0.000 -18.490
Traceless
 xyz
x -1.611 0.000 0.000
y 0.000 2.070 0.000
z 0.000 0.000 -0.459
Polar
3z2-r2-0.917
x2-y2-2.454
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.046 0.000 0.000
y 0.000 4.984 0.000
z 0.000 0.000 5.091


<r2> (average value of r2) Å2
<r2> 37.446
(<r2>)1/2 6.119