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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: HF/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at HF/6-311+G(3df,2p)
 hartrees
Energy at 0K-115.864143
Energy at 298.15K-115.867535
HF Energy-115.864143
Nuclear repulsion energy64.552281
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 HF/6-311+G(3df,2p)
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 3458 3142 0.84 109.33 0.15 0.26
2 A1 3175 2885 84.24 123.56 0.15 0.26
3 A1 1849 1680 26.99 80.22 0.07 0.14
4 A1 1642 1492 1.18 10.92 0.14 0.25
5 A1 1237 1124 0.04 18.95 0.13 0.23
6 A1 1009 917 3.29 5.71 0.51 0.68
7 A2 1100 999 0.00 3.70 0.75 0.86
8 A2 987 897 0.00 2.07 0.75 0.86
9 B1 3232 2936 51.78 102.55 0.75 0.86
10 B1 1197 1087 2.84 0.10 0.75 0.86
11 B1 691 628 102.77 0.05 0.75 0.86
12 B2 3408 3096 1.23 64.44 0.75 0.86
13 B2 1188 1079 20.87 0.50 0.75 0.86
14 B2 1161 1055 43.17 0.11 0.75 0.86
15 B2 869 789 21.10 14.15 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13100.6 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 11903.2 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 HF/6-311+G(3df,2p)
ABC
1.03825 0.74235 0.47274

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.855
C2 0.000 0.636 -0.497
C3 0.000 -0.636 -0.497
H4 0.000 1.558 -1.031
H5 0.000 -1.558 -1.031
H6 0.903 0.000 1.449
H7 -0.903 0.000 1.449

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.49431.49432.44642.44641.08061.0806
C21.49431.27151.06562.25782.23762.2376
C31.49431.27152.25781.06562.23762.2376
H42.44641.06562.25783.11613.06473.0647
H52.44642.25781.06563.11613.06473.0647
H61.08062.23762.23763.06473.06471.8056
H71.08062.23762.23763.06473.06471.8056

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.821 C1 C2 H4 145.235
C1 C3 C2 64.821 C1 C3 H5 145.235
C2 C1 C3 50.358 C2 C1 H6 119.825
C2 C1 H7 119.825 C2 C3 H5 149.944
C3 C1 H6 119.825 C3 C1 H7 119.825
C3 C2 H4 149.944 H6 C1 H7 113.325
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.366      
2 C -0.114      
3 C -0.114      
4 H 0.195      
5 H 0.195      
6 H 0.102      
7 H 0.102      


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 -19.795 0.000 0.000
y 0.000 -16.723 0.000
z 0.000 0.000 -18.657
Traceless
 xyz
x -2.105 0.000 0.000
y 0.000 2.503 0.000
z 0.000 0.000 -0.398
Polar
3z2-r2-0.797
x2-y2-3.072
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.948 0.000 0.000
y 0.000 5.251 0.000
z 0.000 0.000 5.270


<r2> (average value of r2) Å2
<r2> 36.502
(<r2>)1/2 6.042