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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: BLYP/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at BLYP/6-311G*
 hartrees
Energy at 0K-116.585419
Energy at 298.15K-116.588519
HF Energy-116.585419
Nuclear repulsion energy63.319588
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 BLYP/6-311G*
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 3193 3185 1.33 166.27 0.15 0.27
2 A1 2950 2943 87.83 148.10 0.17 0.28
3 A1 1678 1674 14.11 36.27 0.19 0.32
4 A1 1493 1489 3.19 16.67 0.24 0.39
5 A1 1113 1111 1.16 9.76 0.18 0.30
6 A1 889 886 4.17 7.00 0.58 0.73
7 A2 989 986 0.00 10.77 0.75 0.86
8 A2 806 804 0.00 0.02 0.75 0.86
9 B1 3009 3001 69.77 110.58 0.75 0.86
10 B1 1088 1085 1.18 2.61 0.75 0.86
11 B1 558 556 74.54 1.14 0.75 0.86
12 B2 3147 3139 4.12 97.09 0.75 0.86
13 B2 1024 1022 36.15 0.81 0.75 0.86
14 B2 986 983 33.65 0.21 0.75 0.86
15 B2 742 740 11.37 15.97 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11831.1 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 11801.5 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 BLYP/6-311G*
ABC
0.99611 0.71620 0.45488

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.871
C2 0.000 0.650 -0.505
C3 0.000 -0.650 -0.505
H4 0.000 1.587 -1.054
H5 0.000 -1.587 -1.054
H6 0.919 0.000 1.474
H7 -0.919 0.000 1.474

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.52241.52242.49482.49481.09861.0986
C21.52241.30051.08532.30322.27672.2767
C31.52241.30052.30321.08532.27672.2767
H42.49481.08532.30323.17323.12263.1226
H52.49482.30321.08533.17323.12263.1226
H61.09862.27672.27673.12263.12261.8373
H71.09862.27672.27673.12263.12261.8373

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.714 C1 C2 H4 145.657
C1 C3 C2 64.714 C1 C3 H5 145.657
C2 C1 C3 50.571 C2 C1 H6 119.727
C2 C1 H7 119.727 C2 C3 H5 149.629
C3 C1 H6 119.727 C3 C1 H7 119.727
C3 C2 H4 149.629 H6 C1 H7 113.485
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.387      
2 C -0.171      
3 C -0.171      
4 H 0.179      
5 H 0.179      
6 H 0.185      
7 H 0.185      


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 -19.565 0.000 0.000
y 0.000 -17.105 0.000
z 0.000 0.000 -18.664
Traceless
 xyz
x -1.680 0.000 0.000
y 0.000 2.009 0.000
z 0.000 0.000 -0.329
Polar
3z2-r2-0.658
x2-y2-2.460
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.161 0.000 0.000
y 0.000 5.030 0.000
z 0.000 0.000 5.255


<r2> (average value of r2) Å2
<r2> 37.501
(<r2>)1/2 6.124