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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-157.038387
Energy at 298.15K-157.046995
HF Energy-157.038387
Nuclear repulsion energy124.429235
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
(Å4/u)
Dep P Dep U
1 A' 3256 3107 23.31      
2 A' 3175 3030 18.89      
3 A' 3164 3020 13.58      
4 A' 3132 2989 18.67      
5 A' 3053 2913 32.85      
6 A' 1535 1465 1.47      
7 A' 1510 1441 7.81      
8 A' 1443 1377 3.05      
9 A' 1401 1337 2.23      
10 A' 1253 1196 0.15      
11 A' 1222 1166 0.06      
12 A' 1074 1025 4.62      
13 A' 1020 973 12.42      
14 A' 948 905 3.23      
15 A' 814 777 6.74      
16 A' 782 746 0.71      
17 A' 366 349 0.21      
18 A" 3242 3094 0.27      
19 A" 3159 3015 23.19      
20 A" 3132 2989 27.66      
21 A" 1502 1433 1.72      
22 A" 1477 1410 2.47      
23 A" 1204 1149 0.54      
24 A" 1149 1097 0.30      
25 A" 1116 1065 5.50      
26 A" 1078 1028 1.62      
27 A" 902 861 6.95      
28 A" 822 784 4.98      
29 A" 345 330 0.77      
30 A" 230 219 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24252.2 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 23143.8 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 HSEh1PBE/6-31G**
ABC
0.52347 0.21237 0.18666

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 0.403 0.000
C2 -0.879 1.278 0.000
H3 1.291 0.944 0.000
C4 0.346 -0.897 0.752
C5 0.346 -0.897 -0.752
H6 1.252 -1.202 1.267
H7 1.252 -1.202 -1.267
H8 -0.571 -1.186 1.258
H9 -0.571 -1.186 -1.258
H10 -1.791 0.671 0.000
H11 -0.912 1.922 0.885
H12 -0.912 1.922 -0.885

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50591.08841.50161.50162.23582.23582.22422.22422.15372.16232.1623
C21.50592.19532.60742.60743.50643.50642.78372.78371.09561.09551.0955
H31.08842.19532.20142.20142.49162.49163.09553.09553.09352.56742.5674
C41.50162.60742.20141.50341.08562.23331.08662.22812.75503.09033.4946
C51.50162.60742.20141.50342.23331.08562.22811.08662.75503.49463.0903
H62.23583.50642.49161.08562.23332.53371.82293.11443.79063.81914.3671
H72.23583.50642.49162.23331.08562.53373.11441.82293.79064.36713.8191
H82.22422.78373.09551.08662.22811.82293.11442.51672.55313.14883.7910
H92.22422.78373.09552.22811.08663.11441.82292.51672.55313.79103.1488
H102.15371.09563.09352.75502.75503.79063.79062.55312.55311.76731.7673
H112.16231.09552.56743.09033.49463.81914.36713.14883.79101.76731.7708
H122.16231.09552.56743.49463.09034.36713.81913.79103.14881.76731.7708

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.780 C1 C2 H11 111.477
C1 C2 H12 111.477 C1 C4 H5 59.960
C1 C4 H6 118.694 C1 C4 H8 117.595
C1 H5 C4 59.960 C1 H5 H7 118.694
C1 H5 H9 117.595 C2 C1 C3 114.645
C2 C1 C4 120.218 C2 C1 H5 120.218
C3 C1 C4 115.487 C3 C1 H5 115.487
C4 C1 H5 60.080 C4 H5 H7 118.329
C4 H5 H9 117.794 H5 C4 H6 118.329
H5 C4 H8 117.794 H6 C4 H8 114.111
H7 H5 H9 114.111 H10 C2 H11 107.534
H10 C2 H12 107.534 H11 C2 H12 107.851
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 -0.117      
2 C -0.383      
3 H 0.129      
4 C -0.275      
5 C -0.275      
6 H 0.135      
7 H 0.135      
8 H 0.133      
9 H 0.133      
10 H 0.121      
11 H 0.131      
12 H 0.131      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.019 0.105 0.000 0.107
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.879 0.154 0.000
y 0.154 -26.805 0.000
z 0.000 0.000 -26.603
Traceless
 xyz
x 1.825 0.154 0.000
y 0.154 -1.064 0.000
z 0.000 0.000 -0.761
Polar
3z2-r2-1.522
x2-y21.926
xy0.154
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.903 -0.408 0.000
y -0.408 6.338 0.000
z 0.000 0.000 5.931


<r2> (average value of r2) Å2
<r2> 83.005
(<r2>)1/2 9.111