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/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 M06-2X/3-21G*
 hartrees
Energy at 0K-115.908373
Energy at 298.15K-115.911658
HF Energy-115.908373
Nuclear repulsion energy63.464444
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/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 3402 3222 1.30 100.99 0.12 0.21
2 A1 3152 2985 30.39 97.29 0.15 0.26
3 A1 1744 1652 8.34 29.34 0.22 0.36
4 A1 1568 1485 1.13 13.03 0.39 0.56
5 A1 1147 1086 1.03 8.36 0.20 0.33
6 A1 944 895 4.44 9.38 0.60 0.75
7 A2 1049 994 0.00 19.11 0.75 0.86
8 A2 933 884 0.00 0.00 0.75 0.86
9 B1 3230 3060 31.09 66.04 0.75 0.86
10 B1 1130 1070 2.71 3.89 0.75 0.86
11 B1 684 648 104.37 1.32 0.75 0.86
12 B2 3351 3174 2.24 53.14 0.75 0.86
13 B2 1121 1062 22.27 0.18 0.75 0.86
14 B2 1079 1022 52.59 0.16 0.75 0.86
15 B2 788 747 10.93 17.74 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12660.6 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 11992.1 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/3-21G*
ABC
1.00405 0.71502 0.45585

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.877
C2 0.000 0.649 -0.507
C3 0.000 -0.649 -0.507
H4 0.000 1.574 -1.046
H5 0.000 -1.574 -1.046
H6 0.916 0.000 1.459
H7 -0.916 0.000 1.459

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.52861.52862.48502.48501.08591.0859
C21.52861.29771.07062.28712.26462.2646
C31.52861.29772.28711.07062.26462.2646
H42.48501.07062.28713.14753.09763.0976
H52.48502.28711.07063.14753.09763.0976
H61.08592.26462.26463.09763.09761.8328
H71.08592.26462.26463.09763.09761.8328

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.882 C1 C2 H4 145.358
C1 C3 C2 64.882 C1 C3 H5 145.358
C2 C1 C3 50.236 C2 C1 H6 119.062
C2 C1 H7 119.062 C2 C3 H5 149.760
C3 C1 H6 119.062 C3 C1 H7 119.062
C3 C2 H4 149.760 H6 C1 H7 115.110
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.375      
2 C -0.218      
3 C -0.218      
4 H 0.205      
5 H 0.205      
6 H 0.201      
7 H 0.201      


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 -0.466 0.466
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.557 0.000 0.000
y 0.000 -16.960 0.000
z 0.000 0.000 -18.115
Traceless
 xyz
x -2.020 0.000 0.000
y 0.000 1.876 0.000
z 0.000 0.000 0.144
Polar
3z2-r20.287
x2-y2-2.597
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.330 0.000 0.000
y 0.000 4.273 0.000
z 0.000 0.000 4.393


<r2> (average value of r2) Å2
<r2> 37.209
(<r2>)1/2 6.100