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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: PBE1PBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-311G*
 hartrees
Energy at 0K-157.042742
Energy at 298.15K-157.051341
HF Energy-157.042742
Nuclear repulsion energy124.480473
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 PBE1PBE/6-311G*
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' 3236 3102 34.23      
2 A' 3158 3027 22.17      
3 A' 3146 3016 16.89      
4 A' 3113 2984 22.53      
5 A' 3042 2916 38.13      
6 A' 1532 1469 1.52      
7 A' 1514 1451 12.13      
8 A' 1442 1382 4.54      
9 A' 1403 1345 1.50      
10 A' 1253 1201 0.04      
11 A' 1223 1172 0.02      
12 A' 1062 1018 4.05      
13 A' 1014 972 16.74      
14 A' 949 910 3.14      
15 A' 811 778 7.61      
16 A' 783 750 1.43      
17 A' 364 349 0.21      
18 A" 3221 3087 0.32      
19 A" 3140 3010 29.89      
20 A" 3112 2983 34.31      
21 A" 1507 1444 3.13      
22 A" 1475 1414 4.92      
23 A" 1206 1156 0.82      
24 A" 1145 1098 0.13      
25 A" 1116 1070 5.39      
26 A" 1066 1022 1.96      
27 A" 896 859 8.64      
28 A" 824 790 5.64      
29 A" 344 330 0.83      
30 A" 224 215 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24160.5 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 23157.8 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 PBE1PBE/6-311G*
ABC
0.52385 0.21256 0.18678

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.346 0.402 0.000
C2 -0.877 1.278 0.000
H3 1.290 0.941 0.000
C4 0.346 -0.897 0.752
C5 0.346 -0.897 -0.752
H6 1.251 -1.201 1.266
H7 1.251 -1.201 -1.266
H8 -0.570 -1.186 1.259
H9 -0.570 -1.186 -1.259
H10 -1.792 0.676 0.000
H11 -0.909 1.922 0.884
H12 -0.909 1.922 -0.884

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50401.08761.50141.50142.23472.23472.22392.22392.15482.16042.1604
C21.50402.19382.60612.60613.50413.50412.78362.78361.09491.09481.0948
H31.08762.19382.19932.19932.48852.48853.09363.09363.09362.56592.5659
C41.50142.60612.19931.50371.08482.23231.08582.22802.75823.08903.4931
C51.50142.60612.19931.50372.23231.08482.22801.08582.75823.49313.0890
H62.23473.50412.48851.08482.23232.53141.82163.11293.79283.81714.3644
H72.23473.50412.48852.23231.08482.53143.11291.82163.79284.36443.8171
H82.22392.78363.09361.08582.22801.82163.11292.51712.55773.14903.7906
H92.22392.78363.09362.22801.08583.11291.82162.51712.55773.79063.1490
H102.15481.09493.09362.75822.75823.79283.79282.55772.55771.76491.7649
H112.16041.09482.56593.08903.49313.81714.36443.14903.79061.76491.7688
H122.16041.09482.56593.49313.08904.36443.81713.79063.14901.76491.7688

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 111.040 C1 C2 H11 111.496
C1 C2 H12 111.496 C1 C4 H5 59.950
C1 C4 H6 118.674 C1 C4 H8 117.637
C1 H5 C4 59.950 C1 H5 H7 118.674
C1 H5 H9 117.637 C2 C1 C3 114.716
C2 C1 C4 120.256 C2 C1 H5 120.256
C3 C1 C4 115.383 C3 C1 H5 115.383
C4 C1 H5 60.101 C4 H5 H7 118.273
C4 H5 H9 117.817 H5 C4 H6 118.273
H5 C4 H8 117.817 H6 C4 H8 114.122
H7 H5 H9 114.122 H10 C2 H11 107.417
H10 C2 H12 107.417 H11 C2 H12 107.770
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.237      
2 C -0.658      
3 H 0.219      
4 C -0.452      
5 C -0.452      
6 H 0.231      
7 H 0.231      
8 H 0.227      
9 H 0.227      
10 H 0.212      
11 H 0.227      
12 H 0.227      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.041 0.110 0.000 0.117
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.250 0.241 0.000
y 0.241 -27.410 0.000
z 0.000 0.000 -27.121
Traceless
 xyz
x 2.015 0.241 0.000
y 0.241 -1.224 0.000
z 0.000 0.000 -0.791
Polar
3z2-r2-1.582
x2-y22.160
xy0.241
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.177 -0.458 0.000
y -0.458 6.793 0.000
z 0.000 0.000 6.300


<r2> (average value of r2) Å2
<r2> 83.270
(<r2>)1/2 9.125