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All results from a given calculation for C4H6 (1-Methylcyclopropene)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-155.039233
Energy at 298.15K 
HF Energy-155.039233
Nuclear repulsion energy107.845236
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 mPW1PW91/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3349 3197 0.66 87.26 0.29 0.45
2 A' 3152 3009 11.46 80.32 0.72 0.84
3 A' 3108 2967 45.37 110.86 0.14 0.25
4 A' 3062 2923 15.67 152.67 0.02 0.04
5 A' 1859 1775 8.67 41.86 0.21 0.35
6 A' 1565 1494 4.23 14.89 0.43 0.61
7 A' 1549 1478 12.15 29.16 0.71 0.83
8 A' 1464 1397 3.80 22.17 0.56 0.72
9 A' 1201 1146 5.84 3.38 0.46 0.63
10 A' 1115 1064 10.03 1.30 0.35 0.52
11 A' 1086 1036 54.39 0.71 0.40 0.57
12 A' 986 941 0.17 8.42 0.59 0.75
13 A' 951 908 12.88 10.88 0.48 0.65
14 A' 657 627 0.46 15.33 0.61 0.76
15 A' 326 311 2.56 1.45 0.72 0.84
16 A" 3186 3041 42.07 79.14 0.75 0.86
17 A" 3119 2977 8.84 85.50 0.75 0.86
18 A" 1547 1477 11.17 21.77 0.75 0.86
19 A" 1141 1090 0.10 2.99 0.75 0.86
20 A" 1089 1039 4.59 6.02 0.75 0.86
21 A" 1021 975 4.24 13.41 0.75 0.86
22 A" 787 752 43.22 1.30 0.75 0.86
23 A" 314 300 16.88 1.56 0.75 0.86
24 A" 149 143 0.50 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18890.4 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 18032.8 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 mPW1PW91/3-21G
ABC
0.68081 0.21128 0.17199

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.182 0.000
C2 -0.074 -1.344 0.000
C3 1.148 -0.428 0.000
C4 -0.810 1.411 0.000
H5 -0.352 -1.859 0.918
H6 -0.352 -1.859 -0.918
H7 2.219 -0.387 0.000
H8 -0.178 2.303 0.000
H9 -1.461 1.437 -0.883
H10 -1.461 1.437 0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52801.30041.47152.26532.26532.29062.12842.11802.1180
C21.52801.52792.85121.08841.08842.48453.64863.23003.2300
C31.30041.52792.68612.26772.26771.07103.03593.32603.3260
C41.47152.85122.68613.42633.42633.52221.09381.09691.0969
H52.26531.08842.26773.42631.83573.10124.26533.91513.4767
H62.26531.08842.26773.42631.83573.10124.26533.47673.9151
H72.29062.48451.07103.52223.10123.10123.60304.20034.2003
H82.12843.64863.03591.09384.26534.26533.60301.78211.7821
H92.11803.23003.32601.09693.91513.47674.20031.78211.7655
H102.11803.23003.32601.09693.47673.91514.20031.78211.7655

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 50.367 H1 C2 C6 118.989
C2 C3 C6 24.766 C2 C3 C10 73.046
C2 C6 C3 36.021 C2 C6 H4 49.994
C2 C6 H5 32.510 C3 C2 C6 119.213
C3 C6 H4 51.533 C3 C6 H5 66.125
C3 C10 H7 9.491 C3 C10 H8 64.938
C3 C10 H9 74.609 H4 C6 H5 74.462
C6 C3 C10 86.670 H7 C10 H8 58.432
H7 C10 H9 77.869 H8 C10 H9 60.309
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.010      
2 C -0.394      
3 C -0.196      
4 C -0.767      
5 H 0.207      
6 H 0.207      
7 H 0.206      
8 H 0.237      
9 H 0.245      
10 H 0.245      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.188 0.876 0.000 0.895
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.208 -0.553 0.000
y -0.553 -24.538 0.000
z 0.000 0.000 -25.724
Traceless
 xyz
x 1.922 -0.553 0.000
y -0.553 -0.072 0.000
z 0.000 0.000 -1.851
Polar
3z2-r2-3.701
x2-y21.329
xy-0.553
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.052 -0.469 0.000
y -0.469 6.449 0.000
z 0.000 0.000 3.763


<r2> (average value of r2) Å2
<r2> 80.458
(<r2>)1/2 8.970