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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-116.631471
Energy at 298.15K-116.634662
HF Energy-116.631471
Nuclear repulsion energy63.657001
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 B3LYP/6-31+G**
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 3309 3190 0.00 145.68 0.15 0.27
2 A1 3048 2938 71.47 123.99 0.18 0.31
3 A1 1736 1674 18.41 60.16 0.11 0.19
4 A1 1529 1475 3.41 13.14 0.30 0.46
5 A1 1155 1113 0.25 18.83 0.17 0.28
6 A1 925 892 5.26 5.49 0.52 0.68
7 A2 1014 977 0.00 5.06 0.75 0.86
8 A2 851 821 0.00 0.67 0.75 0.86
9 B1 3112 3000 48.89 112.73 0.75 0.86
10 B1 1112 1072 1.02 0.57 0.75 0.86
11 B1 593 572 94.51 0.08 0.75 0.86
12 B2 3264 3147 0.05 85.79 0.75 0.86
13 B2 1074 1036 31.64 0.05 0.75 0.86
14 B2 1030 993 35.51 0.04 0.75 0.86
15 B2 784 756 16.95 17.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12267.4 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 11828.2 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 B3LYP/6-31+G**
ABC
1.00244 0.72675 0.46004

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.864
C2 0.000 0.648 -0.502
C3 0.000 -0.648 -0.502
H4 0.000 1.582 -1.043
H5 0.000 -1.582 -1.043
H6 0.914 0.000 1.464
H7 -0.914 0.000 1.464

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51241.51242.47802.47801.09331.0933
C21.51241.29681.07892.29482.26322.2632
C31.51241.29682.29481.07892.26322.2632
H42.47801.07892.29483.16333.10243.1024
H52.47802.29481.07893.16333.10243.1024
H61.09332.26322.26323.10243.10241.8282
H71.09332.26322.26323.10243.10241.8282

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.614 C1 C2 H4 145.499
C1 C3 C2 64.614 C1 C3 H5 145.499
C2 C1 C3 50.772 C2 C1 H6 119.713
C2 C1 H7 119.713 C2 C3 H5 149.887
C3 C1 H6 119.713 C3 C1 H7 119.713
C3 C2 H4 149.887 H6 C1 H7 113.454
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.294      
2 C -0.120      
3 C -0.120      
4 H 0.135      
5 H 0.135      
6 H 0.132      
7 H 0.132      


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 -0.450 0.450
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.709 0.000 0.000
y 0.000 -17.103 0.000
z 0.000 0.000 -18.799
Traceless
 xyz
x -1.758 0.000 0.000
y 0.000 2.151 0.000
z 0.000 0.000 -0.393
Polar
3z2-r2-0.786
x2-y2-2.606
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.651 0.000 0.000
y 0.000 5.279 0.000
z 0.000 0.000 5.389


<r2> (average value of r2) Å2
<r2> 37.269
(<r2>)1/2 6.105