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All results from a given calculation for C4H8 (methylcyclopropane)

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 CS 1A'
Energy calculated at M06-2X/3-21G
 hartrees
Energy at 0K-156.264054
Energy at 298.15K-156.272787
HF Energy-156.264054
Nuclear repulsion energy123.872494
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 A' 3262 3127 9.35      
2 A' 3213 3081 8.22      
3 A' 3170 3039 5.27      
4 A' 3154 3023 12.59      
5 A' 3086 2958 20.85      
6 A' 1574 1509 9.77      
7 A' 1543 1479 4.12      
8 A' 1475 1414 6.55      
9 A' 1420 1361 0.42      
10 A' 1255 1203 0.32      
11 A' 1221 1170 0.00      
12 A' 1090 1045 24.92      
13 A' 1018 976 1.36      
14 A' 973 933 8.35      
15 A' 808 775 4.90      
16 A' 781 749 3.78      
17 A' 376 360 0.16      
18 A" 3247 3113 0.05      
19 A" 3166 3035 10.29      
20 A" 3149 3019 18.61      
21 A" 1568 1504 2.98      
22 A" 1517 1454 5.87      
23 A" 1215 1165 0.68      
24 A" 1185 1136 2.15      
25 A" 1140 1093 7.28      
26 A" 1118 1072 2.52      
27 A" 885 848 1.55      
28 A" 853 817 12.99      
29 A" 359 344 1.25      
30 A" 273 262 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 24545.5 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 23531.7 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
0.51067 0.21221 0.18637

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.358 0.421 0.000
C2 -0.908 1.255 0.000
H3 1.286 0.982 0.000
C4 0.358 -0.892 0.763
C5 0.358 -0.892 -0.763
H6 1.268 -1.194 1.266
H7 1.268 -1.194 -1.266
H8 -0.560 -1.170 1.267
H9 -0.560 -1.170 -1.267
H10 -1.790 0.605 0.000
H11 -0.956 1.894 0.888
H12 -0.956 1.894 -0.888

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51611.08421.51881.51882.24452.24452.23122.23122.15602.16442.1644
C21.51612.21122.60692.60693.51203.51202.75802.75801.09581.09531.0953
H31.08422.21122.22602.22602.51722.51723.10503.10503.09922.57822.5782
C41.51882.60692.22601.52521.08232.24321.08332.24462.72713.08303.4950
C51.51882.60692.22601.52522.24321.08232.24461.08332.72713.49503.0830
H62.24453.51202.51721.08232.24322.53121.82753.12303.76663.82394.3725
H72.24453.51202.51722.24321.08232.53123.12301.82753.76664.37253.8239
H82.23122.75803.10501.08332.24461.82753.12302.53382.50373.11243.7668
H92.23122.75803.10502.24461.08333.12301.82752.53382.50373.76683.1124
H102.15601.09583.09922.72712.72713.76663.76662.50372.50371.77401.7740
H112.16441.09532.57823.08303.49503.82394.37253.11243.76681.77401.7767
H122.16441.09532.57823.49503.08304.37253.82393.76683.11241.77401.7767

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.227 C1 C2 H11 110.928
C1 C2 H12 110.928 C1 C4 H5 59.859
C1 C4 H6 118.325 C1 C4 H8 117.085
C1 H5 C4 59.859 C1 H5 H7 118.325
C1 H5 H9 117.085 C2 C1 C3 115.491
C2 C1 C4 118.404 C2 C1 H5 118.404
C3 C1 C4 116.563 C3 C1 H5 116.563
C4 C1 H5 60.283 C4 H5 H7 117.691
C4 H5 H9 117.742 H5 C4 H6 117.691
H5 C4 H8 117.742 H6 C4 H8 115.101
H7 H5 H9 115.101 H10 C2 H11 108.125
H10 C2 H12 108.125 H11 C2 H12 108.409
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 -0.295      
2 C -0.549      
3 H 0.213      
4 C -0.400      
5 C -0.400      
6 H 0.213      
7 H 0.213      
8 H 0.209      
9 H 0.209      
10 H 0.188      
11 H 0.200      
12 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.002 0.108 0.000 0.108
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.199 0.111 0.000
y 0.111 -27.240 0.000
z 0.000 0.000 -27.078
Traceless
 xyz
x 1.960 0.111 0.000
y 0.111 -1.102 0.000
z 0.000 0.000 -0.858
Polar
3z2-r2-1.716
x2-y22.041
xy0.111
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.386 -0.376 0.000
y -0.376 5.772 0.000
z 0.000 0.000 5.489


<r2> (average value of r2) Å2
<r2> 83.469
(<r2>)1/2 9.136