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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: TPSSh/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 TPSSh/6-31G
 hartrees
Energy at 0K-157.187832
Energy at 298.15K-157.196445
HF Energy-157.187832
Nuclear repulsion energy123.466933
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 TPSSh/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' 3250 3127 40.13      
2 A' 3165 3045 14.61      
3 A' 3157 3037 26.18      
4 A' 3105 2987 28.90      
5 A' 3032 2917 44.88      
6 A' 1556 1497 5.70      
7 A' 1543 1485 3.20      
8 A' 1466 1410 3.35      
9 A' 1430 1375 2.17      
10 A' 1254 1207 0.07      
11 A' 1236 1190 0.04      
12 A' 1094 1053 16.01      
13 A' 1018 980 5.21      
14 A' 961 925 5.64      
15 A' 811 780 3.52      
16 A' 781 751 4.81      
17 A' 364 350 0.20      
18 A" 3232 3110 0.30      
19 A" 3151 3031 29.75      
20 A" 3104 2986 42.12      
21 A" 1548 1489 2.10      
22 A" 1520 1463 2.49      
23 A" 1226 1180 0.60      
24 A" 1176 1132 1.10      
25 A" 1137 1094 6.87      
26 A" 1117 1074 1.64      
27 A" 875 842 6.19      
28 A" 847 815 8.89      
29 A" 343 330 0.96      
30 A" 218 210 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24358.2 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 23435.0 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 TPSSh/6-31G
ABC
0.51518 0.20861 0.18303

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.348 0.408 0.000
C2 -0.884 1.293 0.000
H3 1.290 0.952 0.000
C4 0.348 -0.908 0.761
C5 0.348 -0.908 -0.761
H6 1.253 -1.212 1.277
H7 1.253 -1.212 -1.277
H8 -0.567 -1.198 1.269
H9 -0.567 -1.198 -1.269
H10 -1.799 0.687 0.000
H11 -0.911 1.937 0.887
H12 -0.911 1.937 -0.887

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51691.08771.52071.52072.25262.25262.24232.24232.16492.17002.1700
C21.51692.20092.63492.63493.53143.53142.81372.81371.09701.09701.0970
H31.08772.20092.21982.21982.51292.51293.11153.11153.10032.56922.5692
C41.52072.63492.21981.52141.08492.25001.08582.24502.78093.11413.5211
C51.52072.63492.21981.52142.25001.08492.24501.08582.78093.52113.1141
H62.25263.53142.51291.08492.25002.55381.81943.12913.81433.84044.3910
H72.25263.53142.51292.25001.08492.55383.12911.81943.81434.39103.8404
H82.24232.81373.11151.08582.24501.81943.12912.53802.58523.17733.8209
H92.24232.81373.11152.24501.08583.12911.81942.53802.58523.82093.1773
H102.16491.09703.10032.78092.78093.81433.81432.58522.58521.77191.7719
H112.17001.09702.56923.11413.52113.84044.39103.17733.82091.77191.7748
H122.17001.09702.56923.52113.11414.39103.84043.82093.17731.77191.7748

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.812 C1 C2 H11 111.222
C1 C2 H12 111.222 C1 C4 H5 59.984
C1 C4 H6 118.703 C1 C4 H8 117.728
C1 H5 C4 59.984 C1 H5 H7 118.703
C1 H5 H9 117.728 C2 C1 C3 114.338
C2 C1 C4 120.327 C2 C1 H5 120.327
C3 C1 C4 115.647 C3 C1 H5 115.647
C4 C1 H5 60.031 C4 H5 H7 118.411
C4 H5 H9 117.913 H5 C4 H6 118.411
H5 C4 H8 117.913 H6 C4 H8 113.893
H7 H5 H9 113.893 H10 C2 H11 107.723
H10 C2 H12 107.723 H11 C2 H12 107.982
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.162      
2 C -0.436      
3 H 0.158      
4 C -0.318      
5 C -0.318      
6 H 0.159      
7 H 0.159      
8 H 0.158      
9 H 0.158      
10 H 0.142      
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
  0.013 0.114 0.000 0.115
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.787 -0.381 0.000
y -0.381 6.245 0.000
z 0.000 0.000 5.871


<r2> (average value of r2) Å2
<r2> 84.242
(<r2>)1/2 9.178