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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-115.936614
Energy at 298.15K-115.939875
HF Energy-115.936614
Nuclear repulsion energy63.488701
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 mPW1PW91/3-21G*
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 3381 3210 0.56 107.32 0.12 0.21
2 A1 3122 2964 38.21 104.17 0.15 0.26
3 A1 1726 1639 8.19 28.94 0.23 0.37
4 A1 1564 1485 1.05 14.56 0.36 0.53
5 A1 1139 1082 1.59 7.41 0.19 0.32
6 A1 939 891 4.87 9.13 0.60 0.75
7 A2 1048 995 0.00 19.12 0.75 0.86
8 A2 916 870 0.00 0.12 0.75 0.86
9 B1 3202 3040 38.67 74.04 0.75 0.86
10 B1 1124 1068 2.50 3.83 0.75 0.86
11 B1 672 639 109.31 1.12 0.75 0.86
12 B2 3328 3161 0.83 57.68 0.75 0.86
13 B2 1112 1056 24.96 0.25 0.75 0.86
14 B2 1069 1016 56.05 0.37 0.75 0.86
15 B2 763 725 11.62 17.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12552.2 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 11919.6 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 mPW1PW91/3-21G*
ABC
1.00334 0.71676 0.45650

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.875
C2 0.000 0.649 -0.506
C3 0.000 -0.649 -0.506
H4 0.000 1.573 -1.047
H5 0.000 -1.573 -1.047
H6 0.917 0.000 1.459
H7 -0.917 0.000 1.459

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.52641.52642.48392.48391.08721.0872
C21.52641.29861.07052.28722.26352.2635
C31.52641.29862.28721.07052.26352.2635
H42.48391.07052.28723.14613.09753.0975
H52.48392.28721.07053.14613.09753.0975
H61.08722.26352.26353.09753.09751.8348
H71.08722.26352.26353.09753.09751.8348

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.826 C1 C2 H4 145.529
C1 C3 C2 64.826 C1 C3 H5 145.529
C2 C1 C3 50.349 C2 C1 H6 119.054
C2 C1 H7 119.054 C2 C3 H5 149.645
C3 C1 H6 119.054 C3 C1 H7 119.054
C3 C2 H4 149.645 H6 C1 H7 115.095
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.410      
2 C -0.224      
3 C -0.224      
4 H 0.215      
5 H 0.215      
6 H 0.215      
7 H 0.215      


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 -0.479 0.479
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.451 0.000 0.000
y 0.000 -16.782 0.000
z 0.000 0.000 -17.933
Traceless
 xyz
x -2.093 0.000 0.000
y 0.000 1.910 0.000
z 0.000 0.000 0.183
Polar
3z2-r20.366
x2-y2-2.669
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.361 0.000 0.000
y 0.000 4.306 0.000
z 0.000 0.000 4.410


<r2> (average value of r2) Å2
<r2> 37.087
(<r2>)1/2 6.090