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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-156.987627
Energy at 298.15K-156.996077
HF Energy-156.987627
Nuclear repulsion energy123.248334
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 PBEPBEultrafine/cc-pVDZ
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' 3155 3137 21.15      
2 A' 3070 3053 20.96      
3 A' 3060 3042 12.52      
4 A' 3037 3019 13.72      
5 A' 2958 2941 36.21      
6 A' 1448 1439 1.95      
7 A' 1420 1411 8.18      
8 A' 1365 1357 1.97      
9 A' 1327 1319 2.72      
10 A' 1200 1193 0.11      
11 A' 1168 1162 0.02      
12 A' 1012 1006 1.56      
13 A' 976 970 11.20      
14 A' 905 899 3.15      
15 A' 782 777 6.33      
16 A' 746 741 0.48      
17 A' 354 352 0.26      
18 A" 3141 3123 0.29      
19 A" 3054 3037 21.92      
20 A" 3034 3016 25.06      
21 A" 1412 1404 2.17      
22 A" 1384 1376 2.23      
23 A" 1142 1135 0.52      
24 A" 1085 1079 0.17      
25 A" 1061 1054 4.59      
26 A" 1010 1004 1.08      
27 A" 860 855 6.33      
28 A" 781 777 3.87      
29 A" 330 328 0.65      
30 A" 223 221 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23247.7 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 23112.9 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 PBEPBEultrafine/cc-pVDZ
ABC
0.51332 0.20885 0.18351

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.347 0.406 0.000
C2 -0.882 1.289 0.000
H3 1.305 0.953 0.000
C4 0.347 -0.906 0.759
C5 0.347 -0.906 -0.759
H6 1.266 -1.214 1.280
H7 1.266 -1.214 -1.280
H8 -0.583 -1.197 1.271
H9 -0.583 -1.197 -1.271
H10 -1.810 0.680 0.000
H11 -0.913 1.944 0.896
H12 -0.913 1.944 -0.896

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51331.10301.51541.51542.25932.25932.24722.24722.17462.18102.1810
C21.51332.21232.62732.62733.53733.53732.80792.80791.11021.11041.1104
H31.10302.21232.22452.22452.51682.51683.13093.13093.12692.58952.5895
C41.51542.62732.22451.51751.10002.25701.10112.25142.78293.11883.5281
C51.51542.62732.22451.51752.25701.10002.25141.10112.78293.52813.1188
H62.25933.53732.51681.10002.25702.55971.84883.15023.83203.85534.4105
H72.25933.53732.51682.25701.10002.55973.15021.84883.83204.41053.8553
H82.24722.80793.13091.10112.25141.84883.15022.54152.57763.18003.8300
H92.24722.80793.13092.25141.10113.15021.84882.54152.57763.83003.1800
H102.17461.11023.12692.78292.78293.83203.83202.57762.57761.78991.7899
H112.18101.11042.58953.11883.52813.85534.41053.18003.83001.78991.7927
H122.18101.11042.58953.52813.11884.41053.85533.83003.18001.78991.7927

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 111.044 C1 C2 H11 111.542
C1 C2 H12 111.542 C1 C4 H5 59.954
C1 C4 H6 118.649 C1 C4 H8 117.506
C1 H5 C4 59.954 C1 H5 H7 118.649
C1 H5 H9 117.506 C2 C1 C3 114.565
C2 C1 C4 120.336 C2 C1 H5 120.336
C3 C1 C4 115.429 C3 C1 H5 115.429
C4 C1 H5 60.092 C4 H5 H7 118.278
C4 H5 H9 117.711 H5 C4 H6 118.278
H5 C4 H8 117.711 H6 C4 H8 114.276
H7 H5 H9 114.276 H10 C2 H11 107.422
H10 C2 H12 107.422 H11 C2 H12 107.657
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.147      
2 C -0.001      
3 H 0.001      
4 C -0.029      
5 C -0.029      
6 H 0.030      
7 H 0.030      
8 H 0.027      
9 H 0.027      
10 H 0.022      
11 H 0.034      
12 H 0.034      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.024 0.134 0.000 0.136
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.413 0.149 0.000
y 0.149 -27.272 0.000
z 0.000 0.000 -27.126
Traceless
 xyz
x 1.785 0.149 0.000
y 0.149 -1.002 0.000
z 0.000 0.000 -0.783
Polar
3z2-r2-1.566
x2-y21.858
xy0.149
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.421 -0.512 0.000
y -0.512 6.943 0.000
z 0.000 0.000 6.387


<r2> (average value of r2) Å2
<r2> 84.543
(<r2>)1/2 9.195