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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: PBEPBE/TZVP

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/TZVP
 hartrees
Energy at 0K-116.499336
Energy at 298.15K-116.502484
HF Energy-116.499336
Nuclear repulsion energy63.579181
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/TZVP
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 3228 3192 0.00 154.48 0.13 0.24
2 A1 2975 2942 71.65 154.41 0.16 0.27
3 A1 1692 1673 13.51 47.26 0.11 0.21
4 A1 1478 1461 2.54 14.17 0.26 0.42
5 A1 1134 1121 0.87 12.90 0.15 0.27
6 A1 895 885 5.89 4.81 0.56 0.71
7 A2 989 978 0.00 9.50 0.75 0.86
8 A2 827 818 0.00 0.04 0.75 0.86
9 B1 3039 3005 45.15 105.43 0.75 0.86
10 B1 1081 1069 1.23 1.10 0.75 0.86
11 B1 579 572 82.32 1.07 0.75 0.86
12 B2 3184 3148 0.02 84.45 0.75 0.86
13 B2 1037 1025 32.88 2.10 0.75 0.86
14 B2 992 981 32.31 0.03 0.75 0.86
15 B2 772 763 16.89 16.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11950.6 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 11816.8 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 PBEPBE/TZVP
ABC
0.99763 0.72694 0.45958

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.863
C2 0.000 0.649 -0.501
C3 0.000 -0.649 -0.501
H4 0.000 1.587 -1.046
H5 0.000 -1.587 -1.046
H6 0.919 0.000 1.464
H7 -0.919 0.000 1.464

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51141.51142.48242.48241.09811.0981
C21.51141.29861.08412.30152.26492.2649
C31.51141.29862.30151.08412.26492.2649
H42.48241.08412.30153.17383.10843.1084
H52.48242.30151.08413.17383.10843.1084
H61.09812.26492.26493.10843.10841.8385
H71.09812.26492.26493.10843.10841.8385

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.557 C1 C2 H4 145.575
C1 C3 C2 64.557 C1 C3 H5 145.575
C2 C1 C3 50.886 C2 C1 H6 119.602
C2 C1 H7 119.602 C2 C3 H5 149.868
C3 C1 H6 119.602 C3 C1 H7 119.602
C3 C2 H4 149.868 H6 C1 H7 113.672
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.278      
2 C -0.120      
3 C -0.120      
4 H 0.136      
5 H 0.136      
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 -0.475 0.475
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.532 0.000 0.000
y 0.000 -17.036 0.000
z 0.000 0.000 -18.689
Traceless
 xyz
x -1.670 0.000 0.000
y 0.000 2.075 0.000
z 0.000 0.000 -0.405
Polar
3z2-r2-0.811
x2-y2-2.497
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.616 0.000 0.000
y 0.000 5.338 0.000
z 0.000 0.000 5.622


<r2> (average value of r2) Å2
<r2> 37.254
(<r2>)1/2 6.104