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 C4H6 (1-Methylcyclopropene)

using model chemistry: wB97X-D/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at wB97X-D/6-31G**
 hartrees
Energy at 0K-155.897150
Energy at 298.15K 
HF Energy-155.897150
Nuclear repulsion energy108.255878
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 wB97X-D/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3316 3316 0.09 103.54 0.29 0.45
2 A' 3157 3157 16.54 84.39 0.73 0.84
3 A' 3058 3058 27.93 261.98 0.02 0.04
4 A' 3057 3057 72.99 35.81 0.64 0.78
5 A' 1906 1906 11.85 50.53 0.21 0.35
6 A' 1548 1548 7.76 15.50 0.40 0.57
7 A' 1500 1500 8.86 22.37 0.70 0.83
8 A' 1422 1422 0.16 13.72 0.62 0.77
9 A' 1213 1213 2.51 4.80 0.48 0.65
10 A' 1106 1106 15.77 2.32 0.23 0.37
11 A' 1088 1088 26.47 0.09 0.70 0.82
12 A' 996 996 6.05 9.96 0.47 0.64
13 A' 953 953 13.06 9.46 0.60 0.75
14 A' 698 698 0.48 16.71 0.58 0.74
15 A' 322 322 1.74 1.33 0.73 0.84
16 A" 3129 3129 6.47 84.75 0.75 0.86
17 A" 3123 3123 67.97 95.45 0.75 0.86
18 A" 1496 1496 8.30 17.69 0.75 0.86
19 A" 1135 1135 0.77 2.52 0.75 0.86
20 A" 1063 1063 1.21 5.41 0.75 0.86
21 A" 997 997 2.94 11.50 0.75 0.86
22 A" 743 743 30.33 1.16 0.75 0.86
23 A" 298 298 11.03 1.40 0.75 0.86
24 A" 152 152 0.49 0.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18737.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18737.8 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 wB97X-D/6-31G**
ABC
0.69053 0.21222 0.17315

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.179 0.000
C2 -0.026 -1.329 0.000
C3 1.158 -0.397 0.000
C4 -0.858 1.380 0.000
H5 -0.297 -1.867 0.913
H6 -0.297 -1.867 -0.913
H7 2.234 -0.332 0.000
H8 -0.264 2.297 0.000
H9 -1.509 1.382 -0.881
H10 -1.509 1.382 0.881

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50781.29331.47642.25982.25982.29152.13462.12132.1213
C21.50781.50682.83381.09401.09402.46953.63353.21283.2128
C31.29331.50682.68772.26112.26111.07753.04623.32463.3246
C41.47642.83382.68773.41933.41933.53471.09271.09491.0949
H52.25981.09402.26113.41931.82613.09734.26293.90383.4675
H62.25981.09402.26113.41931.82613.09734.26293.46753.9038
H72.29152.46951.07753.53473.09733.09733.62674.20994.2099
H82.13463.63353.04621.09274.26294.26293.62671.77851.7785
H92.12133.21283.32461.09493.90383.46754.20991.77851.7612
H102.12133.21283.32461.09493.46753.90384.20991.77851.7612

picture of 1-Methylcyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 50.809 H1 C2 C6 119.743
C2 C3 C6 24.790 C2 C3 C10 72.569
C2 C6 C3 35.275 C2 C6 H4 49.510
C2 C6 H5 33.425 C3 C2 C6 119.935
C3 C6 H4 51.714 C3 C6 H5 66.183
C3 C10 H7 9.419 C3 C10 H8 65.325
C3 C10 H9 74.641 H4 C6 H5 74.512
C6 C3 C10 86.471 H7 C10 H8 58.908
H7 C10 H9 77.926 H8 C10 H9 60.323
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.117      
2 C -0.286      
3 C -0.172      
4 C -0.445      
5 H 0.105      
6 H 0.105      
7 H 0.130      
8 H 0.146      
9 H 0.150      
10 H 0.150      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.161 0.905 0.000 0.919
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.966 -0.566 0.000
y -0.566 -24.674 0.000
z 0.000 0.000 -25.133
Traceless
 xyz
x 1.938 -0.566 0.000
y -0.566 -0.625 0.000
z 0.000 0.000 -1.313
Polar
3z2-r2-2.625
x2-y21.708
xy-0.566
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.534 -0.473 0.000
y -0.473 6.817 0.000
z 0.000 0.000 4.256


<r2> (average value of r2) Å2
<r2> 79.965
(<r2>)1/2 8.942