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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: B97D3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/6-31+G**
 hartrees
Energy at 0K-157.123698
Energy at 298.15K-157.132201
HF Energy-157.123698
Nuclear repulsion energy123.652150
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 B97D3/6-31+G**
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' 3171 3116 37.44      
2 A' 3088 3035 26.33      
3 A' 3081 3028 21.84      
4 A' 3045 2993 23.68      
5 A' 2972 2920 51.58      
6 A' 1487 1462 0.99      
7 A' 1476 1451 9.11      
8 A' 1398 1374 3.17      
9 A' 1367 1344 3.93      
10 A' 1213 1192 0.01      
11 A' 1187 1167 0.00      
12 A' 1022 1005 8.80      
13 A' 984 967 11.37      
14 A' 928 912 3.09      
15 A' 786 773 5.44      
16 A' 757 744 2.81      
17 A' 365 359 0.22      
18 A" 3156 3102 0.33      
19 A" 3077 3024 38.55      
20 A" 3042 2989 39.04      
21 A" 1469 1443 2.37      
22 A" 1446 1421 1.73      
23 A" 1173 1153 0.81      
24 A" 1111 1092 0.03      
25 A" 1086 1067 3.90      
26 A" 1036 1018 1.90      
27 A" 863 848 8.71      
28 A" 805 791 5.21      
29 A" 340 334 0.73      
30 A" 217 213 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23573.3 cm-1
Scaled (by 0.9828) Zero Point Vibrational Energy (zpe) 23167.8 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 B97D3/6-31+G**
ABC
0.51674 0.20962 0.18410

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.348 0.404 0.000
C2 -0.885 1.288 0.000
H3 1.296 0.948 0.000
C4 0.348 -0.904 0.758
C5 0.348 -0.904 -0.758
H6 1.258 -1.210 1.274
H7 1.258 -1.210 -1.274
H8 -0.573 -1.193 1.266
H9 -0.573 -1.193 -1.266
H10 -1.801 0.679 0.000
H11 -0.914 1.934 0.890
H12 -0.914 1.934 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51691.09281.51171.51172.24882.24882.23632.23632.16642.17362.1736
C21.51692.20702.62632.62633.52903.52902.80212.80211.10001.10041.1004
H31.09282.20702.21422.21422.50652.50653.11113.11113.10842.57812.5781
C41.51172.62632.21421.51581.09002.24741.09092.24212.77433.10823.5157
C51.51172.62632.21421.51582.24741.09002.24211.09092.77433.51573.1082
H62.24883.52902.50651.09002.24742.54841.83133.13123.81413.84014.3914
H72.24883.52902.50652.24741.09002.54843.13121.83133.81414.39143.8401
H82.23632.80213.11111.09092.24211.83133.13122.53142.57133.16713.8130
H92.23632.80213.11112.24211.09093.13121.83132.53142.57133.81303.1671
H102.16641.10003.10842.77432.77433.81413.81412.57132.57131.77611.7761
H112.17361.10042.57813.10823.51573.84014.39143.16713.81301.77611.7809
H122.17361.10042.57813.51573.10824.39143.84013.81303.16711.77611.7809

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.763 C1 C2 H11 111.241
C1 C2 H12 111.241 C1 C4 H5 59.905
C1 C4 H6 118.712 C1 C4 H8 117.690
C1 H5 C4 59.905 C1 H5 H7 118.712
C1 H5 H9 117.690 C2 C1 C3 114.283
C2 C1 C4 120.443 C2 C1 H5 120.443
C3 C1 C4 115.524 C3 C1 H5 115.524
C4 C1 H5 60.190 C4 H5 H7 118.287
C4 H5 H9 117.896 H5 C4 H6 118.287
H5 C4 H8 117.896 H6 C4 H8 114.027
H7 H5 H9 114.027 H10 C2 H11 107.693
H10 C2 H12 107.693 H11 C2 H12 108.053
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.156      
2 C -0.621      
3 H 0.145      
4 C -0.365      
5 C -0.365      
6 H 0.152      
7 H 0.152      
8 H 0.149      
9 H 0.149      
10 H 0.142      
11 H 0.153      
12 H 0.153      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.039 0.135 0.000 0.141
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.614 0.230 0.000
y 0.230 -27.692 0.000
z 0.000 0.000 -27.430
Traceless
 xyz
x 1.947 0.230 0.000
y 0.230 -1.170 0.000
z 0.000 0.000 -0.777
Polar
3z2-r2-1.554
x2-y22.078
xy0.230
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.597 -0.520 0.000
y -0.520 7.538 0.000
z 0.000 0.000 6.999


<r2> (average value of r2) Å2
<r2> 84.375
(<r2>)1/2 9.186