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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: wB97X-D/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/cc-pVDZ
 hartrees
Energy at 0K-157.177241
Energy at 298.15K-157.185850
HF Energy-157.177241
Nuclear repulsion energy124.168431
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 wB97X-D/cc-pVDZ
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' 3259 3104 27.43      
2 A' 3183 3032 19.01      
3 A' 3167 3017 13.80      
4 A' 3123 2975 25.26      
5 A' 3046 2901 39.80      
6 A' 1536 1464 2.02      
7 A' 1503 1432 10.84      
8 A' 1441 1373 4.26      
9 A' 1405 1338 1.97      
10 A' 1242 1183 0.00      
11 A' 1219 1161 0.02      
12 A' 1064 1014 8.71      
13 A' 1009 961 12.61      
14 A' 951 906 3.90      
15 A' 812 773 4.75      
16 A' 782 745 5.78      
17 A' 374 356 0.21      
18 A" 3245 3091 0.22      
19 A" 3161 3011 28.37      
20 A" 3125 2977 31.58      
21 A" 1504 1433 2.51      
22 A" 1483 1412 3.69      
23 A" 1207 1150 0.75      
24 A" 1149 1095 0.22      
25 A" 1113 1060 5.24      
26 A" 1079 1028 1.65      
27 A" 884 842 10.36      
28 A" 832 793 6.62      
29 A" 355 338 0.78      
30 A" 206 196 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 24229.4 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 23080.9 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 wB97X-D/cc-pVDZ
ABC
0.52067 0.21148 0.18577

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.346 0.401 0.000
C2 -0.881 1.284 0.000
H3 1.290 0.943 0.000
C4 0.346 -0.900 0.754
C5 0.346 -0.900 -0.754
H6 1.254 -1.204 1.268
H7 1.254 -1.204 -1.268
H8 -0.570 -1.190 1.262
H9 -0.570 -1.190 -1.262
H10 -1.795 0.680 0.000
H11 -0.905 1.926 0.887
H12 -0.905 1.926 -0.887

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51191.08811.50401.50402.23752.23752.22762.22762.15952.16272.1627
C21.51192.19762.61632.61633.51473.51472.79402.79401.09571.09531.0953
H31.08812.19762.20372.20372.49352.49353.09843.09843.09632.56322.5632
C41.50402.61632.20371.50851.08582.23681.08692.23332.76593.09353.4994
C51.50402.61632.20371.50852.23681.08582.23331.08692.76593.49943.0935
H62.23753.51472.49351.08582.23682.53531.82393.11823.80123.82104.3701
H72.23753.51472.49352.23681.08582.53533.11821.82393.80124.37013.8210
H82.22762.79403.09841.08692.23331.82393.11822.52322.56633.15593.7994
H92.22762.79403.09842.23331.08693.11821.82392.52322.56633.79943.1559
H102.15951.09573.09632.76592.76593.80123.80122.56632.56631.77001.7700
H112.16271.09532.56323.09353.49943.82104.37013.15593.79941.77001.7739
H122.16271.09532.56323.49943.09354.37013.82103.79943.15591.77001.7739

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 111.093
C1 C2 H12 111.093 C1 C4 H5 59.901
C1 C4 H6 118.634 C1 C4 H8 117.686
C1 H5 C4 59.901 C1 H5 H7 118.634
C1 H5 H9 117.686 C2 C1 C3 114.409
C2 C1 C4 120.338 C2 C1 H5 120.338
C3 C1 C4 115.524 C3 C1 H5 115.524
C4 C1 H5 60.197 C4 H5 H7 118.217
C4 H5 H9 117.825 H5 C4 H6 118.217
H5 C4 H8 117.825 H6 C4 H8 114.163
H7 H5 H9 114.163 H10 C2 H11 107.776
H10 C2 H12 107.776 H11 C2 H12 108.151
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.088      
2 C -0.618      
3 H 0.154      
4 C -0.355      
5 C -0.355      
6 H 0.159      
7 H 0.159      
8 H 0.155      
9 H 0.155      
10 H 0.144      
11 H 0.158      
12 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.035 0.139 0.000 0.144
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.321 0.197 0.000
y 0.197 -27.398 0.000
z 0.000 0.000 -27.156
Traceless
 xyz
x 1.956 0.197 0.000
y 0.197 -1.159 0.000
z 0.000 0.000 -0.797
Polar
3z2-r2-1.593
x2-y22.077
xy0.197
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.333 -0.429 0.000
y -0.429 7.148 0.000
z 0.000 0.000 6.692


<r2> (average value of r2) Å2
<r2> 83.601
(<r2>)1/2 9.143