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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: HF/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-115.839297
Energy at 298.15K-115.842704
HF Energy-115.839297
Nuclear repulsion energy64.505686
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/6-31G(2df,p)
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 3478 3149 0.24 109.46 0.13 0.23
2 A1 3182 2881 82.15 119.99 0.16 0.27
3 A1 1871 1694 19.75 48.19 0.18 0.30
4 A1 1647 1491 4.32 13.94 0.26 0.41
5 A1 1252 1133 0.07 11.88 0.16 0.28
6 A1 1021 925 2.23 8.90 0.61 0.75
7 A2 1101 997 0.00 12.74 0.75 0.86
8 A2 998 904 0.00 0.06 0.75 0.86
9 B1 3241 2934 65.75 85.81 0.75 0.86
10 B1 1201 1088 3.99 1.76 0.75 0.86
11 B1 715 647 73.79 0.68 0.75 0.86
12 B2 3425 3101 0.37 61.51 0.75 0.86
13 B2 1191 1078 31.89 0.00 0.75 0.86
14 B2 1166 1056 30.87 0.06 0.75 0.86
15 B2 881 798 15.76 18.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13183.6 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 11937.8 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 HF/6-31G(2df,p)
ABC
1.03525 0.74245 0.47220

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.854
C2 0.000 0.637 -0.498
C3 0.000 -0.637 -0.498
H4 0.000 1.561 -1.029
H5 0.000 -1.561 -1.029
H6 0.903 0.000 1.452
H7 -0.903 0.000 1.452

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.49411.49412.44602.44601.08311.0831
C21.49411.27311.06652.26122.24092.2409
C31.49411.27312.26121.06652.24092.2409
H42.44601.06652.26123.12283.06713.0671
H52.44602.26121.06653.12283.06713.0671
H61.08312.24092.24093.06713.06711.8064
H71.08312.24092.24093.06713.06711.8064

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.783 C1 C2 H4 145.081
C1 C3 C2 64.783 C1 C3 H5 145.081
C2 C1 C3 50.434 C2 C1 H6 119.956
C2 C1 H7 119.956 C2 C3 H5 150.136
C3 C1 H6 119.956 C3 C1 H7 119.956
C3 C2 H4 150.136 H6 C1 H7 113.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.317      
2 C -0.145      
3 C -0.145      
4 H 0.185      
5 H 0.185      
6 H 0.119      
7 H 0.119      


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 -0.578 0.578
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.224 0.000 0.000
y 0.000 -16.519 0.000
z 0.000 0.000 -18.295
Traceless
 xyz
x -1.817 0.000 0.000
y 0.000 2.240 0.000
z 0.000 0.000 -0.424
Polar
3z2-r2-0.847
x2-y2-2.705
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.944 0.000 0.000
y 0.000 4.673 0.000
z 0.000 0.000 4.689


<r2> (average value of r2) Å2
<r2> 36.301
(<r2>)1/2 6.025