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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G*
 hartrees
Energy at 0K-157.027102
Energy at 298.15K-157.035705
HF Energy-157.027102
Nuclear repulsion energy124.377709
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 HSEh1PBE/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' 3258 3098 25.77      
2 A' 3177 3022 17.64      
3 A' 3170 3015 16.52      
4 A' 3133 2979 19.48      
5 A' 3058 2909 33.74      
6 A' 1546 1471 1.17      
7 A' 1528 1453 8.30      
8 A' 1455 1384 3.20      
9 A' 1415 1346 2.27      
10 A' 1260 1198 0.14      
11 A' 1229 1169 0.08      
12 A' 1079 1026 4.83      
13 A' 1023 973 12.77      
14 A' 954 908 3.36      
15 A' 817 777 6.71      
16 A' 785 747 0.86      
17 A' 366 348 0.21      
18 A" 3244 3085 0.31      
19 A" 3165 3010 24.38      
20 A" 3133 2980 29.01      
21 A" 1520 1445 2.03      
22 A" 1491 1418 2.30      
23 A" 1212 1153 0.55      
24 A" 1156 1099 0.37      
25 A" 1124 1069 5.30      
26 A" 1082 1029 1.79      
27 A" 905 861 7.06      
28 A" 826 786 5.18      
29 A" 345 328 0.80      
30 A" 229 217 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24342.8 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 23150.0 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 HSEh1PBE/6-31G*
ABC
0.52315 0.21219 0.18651

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.346 0.402 0.000
C2 -0.879 1.279 0.000
H3 1.291 0.944 0.000
C4 0.346 -0.898 0.752
C5 0.346 -0.898 -0.752
H6 1.253 -1.202 1.268
H7 1.253 -1.202 -1.268
H8 -0.571 -1.187 1.259
H9 -0.571 -1.187 -1.259
H10 -1.792 0.672 0.000
H11 -0.911 1.924 0.886
H12 -0.911 1.924 -0.886

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50631.08901.50191.50192.23672.23672.22562.22562.15522.16312.1631
C21.50632.19552.60842.60843.50793.50792.78592.78591.09651.09641.0964
H31.08902.19552.20232.20232.49282.49283.09743.09743.09502.56752.5675
C41.50192.60842.20231.50351.08642.23421.08732.22922.75703.09163.4961
C51.50192.60842.20231.50352.23421.08642.22921.08732.75703.49613.0916
H62.23673.50792.49281.08642.23422.53511.82353.11623.79323.82034.3690
H72.23673.50792.49282.23421.08642.53513.11621.82353.79324.36903.8203
H82.22562.78593.09741.08732.22921.82353.11622.51892.55593.15133.7941
H92.22562.78593.09742.22921.08733.11621.82352.51892.55593.79413.1513
H102.15521.09653.09502.75702.75703.79323.79322.55592.55591.76901.7690
H112.16311.09642.56753.09163.49613.82034.36903.15133.79411.76901.7726
H122.16311.09642.56753.49613.09164.36903.82033.79413.15131.76901.7726

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.809 C1 C2 H11 111.450
C1 C2 H12 111.450 C1 C4 H5 59.965
C1 C4 H6 118.695 C1 C4 H8 117.644
C1 H5 C4 59.965 C1 H5 H7 118.695
C1 H5 H9 117.644 C2 C1 C3 114.597
C2 C1 C4 120.243 C2 C1 H5 120.243
C3 C1 C4 115.505 C3 C1 H5 115.505
C4 C1 H5 60.070 C4 H5 H7 118.346
C4 H5 H9 117.835 H5 C4 H6 118.346
H5 C4 H8 117.835 H6 C4 H8 114.043
H7 H5 H9 114.043 H10 C2 H11 107.542
H10 C2 H12 107.542 H11 C2 H12 107.864
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.133      
2 C -0.517      
3 H 0.169      
4 C -0.363      
5 C -0.363      
6 H 0.176      
7 H 0.176      
8 H 0.174      
9 H 0.174      
10 H 0.163      
11 H 0.172      
12 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.028 0.102 0.000 0.106
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.874 0.184 0.000
y 0.184 -26.849 0.000
z 0.000 0.000 -26.621
Traceless
 xyz
x 1.861 0.184 0.000
y 0.184 -1.102 0.000
z 0.000 0.000 -0.760
Polar
3z2-r2-1.519
x2-y21.976
xy0.184
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.816 -0.398 0.000
y -0.398 6.244 0.000
z 0.000 0.000 5.851


<r2> (average value of r2) Å2
<r2> 83.075
(<r2>)1/2 9.115