return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: M06-2X/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 M06-2X/6-311G**
 hartrees
Energy at 0K-116.595608
Energy at 298.15K-116.598862
HF Energy-116.595608
Nuclear repulsion energy64.011620
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 M06-2X/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 3340 3340 0.80 126.88 0.14 0.25
2 A1 3084 3084 57.18 133.82 0.16 0.27
3 A1 1767 1767 13.09 43.45 0.16 0.28
4 A1 1529 1529 1.72 11.52 0.28 0.44
5 A1 1186 1186 0.23 11.96 0.19 0.33
6 A1 928 928 5.80 5.16 0.61 0.76
7 A2 1023 1023 0.00 8.83 0.75 0.86
8 A2 894 894 0.00 0.07 0.75 0.86
9 B1 3155 3155 40.83 89.79 0.75 0.86
10 B1 1118 1118 1.81 2.00 0.75 0.86
11 B1 623 623 86.95 0.76 0.75 0.86
12 B2 3291 3291 1.95 67.48 0.75 0.86
13 B2 1076 1076 36.83 0.04 0.75 0.86
14 B2 1040 1040 24.58 0.14 0.75 0.86
15 B2 835 835 20.81 16.42 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12444.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12444.0 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 M06-2X/6-311G**
ABC
1.01297 0.73524 0.46556

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.860
C2 0.000 0.644 -0.499
C3 0.000 -0.644 -0.499
H4 0.000 1.576 -1.036
H5 0.000 -1.576 -1.036
H6 0.913 0.000 1.453
H7 -0.913 0.000 1.453

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50381.50382.46522.46521.08861.0886
C21.50381.28801.07562.28412.24892.2489
C31.50381.28802.28411.07562.24892.2489
H42.46521.07562.28413.15243.08383.0838
H52.46522.28411.07563.15243.08383.0838
H61.08862.24892.24893.08383.08381.8260
H71.08862.24892.24893.08383.08381.8260

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.642 C1 C2 H4 145.284
C1 C3 C2 64.642 C1 C3 H5 145.284
C2 C1 C3 50.715 C2 C1 H6 119.483
C2 C1 H7 119.483 C2 C3 H5 150.074
C3 C1 H6 119.483 C3 C1 H7 119.483
C3 C2 H4 150.074 H6 C1 H7 114.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.264      
2 C -0.128      
3 C -0.128      
4 H 0.124      
5 H 0.124      
6 H 0.135      
7 H 0.135      


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 -0.493 0.493
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.429 0.000 0.000
y 0.000 -16.781 0.000
z 0.000 0.000 -18.486
Traceless
 xyz
x -1.795 0.000 0.000
y 0.000 2.176 0.000
z 0.000 0.000 -0.381
Polar
3z2-r2-0.762
x2-y2-2.648
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.090 0.000 0.000
y 0.000 4.920 0.000
z 0.000 0.000 5.039


<r2> (average value of r2) Å2
<r2> 36.791
(<r2>)1/2 6.066