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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: B97D3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/6-31G*
 hartrees
Energy at 0K-157.106544
Energy at 298.15K-157.115057
HF Energy-157.106544
Nuclear repulsion energy 
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 B97D3/6-31G*
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' 3172 3109 40.88      
2 A' 3089 3029 17.88      
3 A' 3085 3025 32.49      
4 A' 3048 2988 23.02      
5 A' 2977 2919 45.08      
6 A' 1508 1479 0.84      
7 A' 1501 1472 6.06      
8 A' 1421 1393 1.87      
9 A' 1386 1359 4.72      
10 A' 1226 1202 0.11      
11 A' 1200 1177 0.06      
12 A' 1040 1020 5.63      
13 A' 992 973 8.57      
14 A' 937 919 3.59      
15 A' 793 778 4.49      
16 A' 763 749 1.47      
17 A' 365 358 0.21      
18 A" 3156 3094 0.39      
19 A" 3081 3021 36.13      
20 A" 3044 2984 39.64      
21 A" 1495 1466 1.50      
22 A" 1468 1439 0.86      
23 A" 1187 1164 0.50      
24 A" 1125 1103 0.26      
25 A" 1100 1079 4.03      
26 A" 1046 1025 1.59      
27 A" 873 856 6.12      
28 A" 809 793 4.62      
29 A" 338 331 0.71      
30 A" 221 217 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23724.0 cm-1
Scaled (by 0.9804) Zero Point Vibrational Energy (zpe) 23259.0 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 B97D3/6-31G*
ABC
0.51752 0.20968 0.18425

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.348 0.404 0.000
C2 -0.884 1.288 0.000
H3 1.296 0.949 0.000
C4 0.348 -0.904 0.756
C5 0.348 -0.904 -0.756
H6 1.258 -1.209 1.275
H7 1.258 -1.209 -1.275
H8 -0.573 -1.194 1.266
H9 -0.573 -1.194 -1.266
H10 -1.801 0.679 0.000
H11 -0.914 1.935 0.891
H12 -0.914 1.935 -0.891

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51601.09341.51081.51082.24822.24822.23712.23712.16662.17452.1745
C21.51602.20612.62522.62523.52773.52772.80332.80331.10101.10141.1014
H31.09342.20612.21422.21422.50622.50623.11253.11253.10902.57862.5786
C41.51082.62522.21421.51281.09092.24651.09172.24082.77393.10923.5160
C51.51082.62522.21421.51282.24651.09092.24081.09172.77393.51603.1092
H62.24823.52772.50621.09092.24652.54931.83113.13153.81393.84004.3917
H72.24823.52772.50622.24651.09092.54933.13151.83113.81394.39173.8400
H82.23712.80333.11251.09172.24081.83113.13152.53142.57263.16973.8154
H92.23712.80333.11252.24081.09173.13151.83112.53142.57263.81543.1697
H102.16661.10103.10902.77392.77393.81393.81392.57262.57261.77731.7773
H112.17451.10142.57863.10923.51603.84004.39173.16973.81541.77731.7815
H122.17451.10142.57863.51603.10924.39173.84003.81543.16971.77731.7815

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.756 C1 C2 H11 111.283
C1 C2 H12 111.283 C1 C4 H5 59.937
C1 C4 H6 118.658 C1 C4 H8 117.764
C1 H5 C4 59.937 C1 H5 H7 118.658
C1 H5 H9 117.764 C2 C1 C3 114.260
C2 C1 C4 120.446 C2 C1 H5 120.446
C3 C1 C4 115.560 C3 C1 H5 115.560
C4 C1 H5 60.126 C4 H5 H7 118.334
C4 H5 H9 117.895 H5 C4 H6 118.334
H5 C4 H8 117.895 H6 C4 H8 113.975
H7 H5 H9 113.975 H10 C2 H11 107.677
H10 C2 H12 107.677 H11 C2 H12 108.003
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.094      
2 C -0.459      
3 H 0.141      
4 C -0.318      
5 C -0.318      
6 H 0.151      
7 H 0.151      
8 H 0.151      
9 H 0.151      
10 H 0.143      
11 H 0.150      
12 H 0.150      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.029 0.099 0.000 0.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.951 0.203 0.000
y 0.203 -26.878 0.000
z 0.000 0.000 -26.640
Traceless
 xyz
x 1.808 0.203 0.000
y 0.203 -1.083 0.000
z 0.000 0.000 -0.725
Polar
3z2-r2-1.450
x2-y21.927
xy0.203
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.956 -0.434 0.000
y -0.434 6.409 0.000
z 0.000 0.000 5.973


<r2> (average value of r2) Å2
<r2> 83.875
(<r2>)1/2 9.158