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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: mPW1PW91/6-31G(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 mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-116.601317
Energy at 298.15K-116.604577
HF Energy-116.601317
Nuclear repulsion energy64.046494
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 mPW1PW91/6-31G(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 3347 3196 0.03 128.40 0.13 0.23
2 A1 3067 2928 66.53 121.79 0.15 0.26
3 A1 1762 1682 11.66 36.00 0.16 0.28
4 A1 1530 1461 3.40 14.47 0.32 0.48
5 A1 1192 1138 1.02 9.93 0.15 0.27
6 A1 947 904 3.83 8.01 0.65 0.79
7 A2 1027 981 0.00 12.37 0.75 0.86
8 A2 890 850 0.00 0.01 0.75 0.86
9 B1 3134 2992 47.46 83.33 0.75 0.86
10 B1 1120 1069 2.13 2.17 0.75 0.86
11 B1 638 610 62.98 1.05 0.75 0.86
12 B2 3298 3148 0.12 68.02 0.75 0.86
13 B2 1086 1037 35.37 0.11 0.75 0.86
14 B2 1049 1002 22.07 0.04 0.75 0.86
15 B2 825 788 14.26 17.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12455.4 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 11891.2 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 mPW1PW91/6-31G(2df,p)
ABC
1.01201 0.73797 0.46631

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.856
C2 0.000 0.645 -0.498
C3 0.000 -0.645 -0.498
H4 0.000 1.576 -1.035
H5 0.000 -1.576 -1.035
H6 0.912 0.000 1.456
H7 -0.912 0.000 1.456

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.49991.49992.46172.46171.09151.0915
C21.49991.28931.07522.28492.25102.2510
C31.49991.28932.28491.07522.25102.2510
H42.46171.07522.28493.15283.08573.0857
H52.46172.28491.07523.15283.08573.0857
H61.09152.25102.25103.08573.08571.8232
H71.09152.25102.25103.08573.08571.8232

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.546 C1 C2 H4 145.385
C1 C3 C2 64.546 C1 C3 H5 145.385
C2 C1 C3 50.908 C2 C1 H6 119.775
C2 C1 H7 119.775 C2 C3 H5 150.068
C3 C1 H6 119.775 C3 C1 H7 119.775
C3 C2 H4 150.068 H6 C1 H7 113.270
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.347      
2 C -0.117      
3 C -0.117      
4 H 0.167      
5 H 0.167      
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 -0.540 0.540
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.852 0.000 0.000
y 0.000 -16.401 0.000
z 0.000 0.000 -18.025
Traceless
 xyz
x -1.639 0.000 0.000
y 0.000 2.038 0.000
z 0.000 0.000 -0.399
Polar
3z2-r2-0.798
x2-y2-2.451
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.013 0.000 0.000
y 0.000 4.714 0.000
z 0.000 0.000 4.805


<r2> (average value of r2) Å2
<r2> 36.471
(<r2>)1/2 6.039