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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: PBEPBE/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 PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-156.987646
Energy at 298.15K-156.996103
HF Energy-156.987646
Nuclear repulsion energy123.248295
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 PBEPBE/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' 3156 3138 21.15      
2 A' 3071 3053 21.20      
3 A' 3060 3042 12.55      
4 A' 3038 3020 13.33      
5 A' 2960 2943 36.33      
6 A' 1448 1439 1.96      
7 A' 1420 1412 8.14      
8 A' 1366 1358 1.97      
9 A' 1328 1320 2.71      
10 A' 1200 1193 0.12      
11 A' 1168 1162 0.02      
12 A' 1012 1006 1.46      
13 A' 976 970 11.37      
14 A' 906 900 3.09      
15 A' 782 778 6.33      
16 A' 745 741 0.50      
17 A' 354 352 0.26      
18 A" 3142 3123 0.29      
19 A" 3055 3037 21.89      
20 A" 3035 3017 25.10      
21 A" 1413 1405 2.13      
22 A" 1385 1377 2.24      
23 A" 1142 1135 0.52      
24 A" 1083 1077 0.22      
25 A" 1061 1055 4.56      
26 A" 1010 1004 1.06      
27 A" 861 856 6.28      
28 A" 781 777 3.95      
29 A" 332 330 0.66      
30 A" 225 223 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23256.5 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 23121.6 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 PBEPBE/cc-pVDZ
ABC
0.51332 0.20885 0.18351

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/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
C11.51321.10291.51551.51552.25942.25942.24732.24732.17472.18102.1810
C21.51322.21242.62732.62733.53723.53722.80792.80791.11021.11041.1104
H31.10292.21242.22442.22442.51662.51663.13083.13083.12712.58972.5897
C41.51552.62732.22441.51741.10002.25701.10102.25152.78303.11883.5280
C51.51552.62732.22441.51742.25701.10002.25151.10102.78303.52803.1188
H62.25943.53722.51661.10002.25702.55961.84873.15023.83213.85534.4104
H72.25943.53722.51662.25701.10002.55963.15021.84873.83214.41043.8553
H82.24732.80793.13081.10102.25151.84873.15022.54172.57783.18013.8301
H92.24732.80793.13082.25151.10103.15021.84872.54172.57783.83013.1801
H102.17471.11023.12712.78302.78303.83213.83212.57782.57781.78981.7898
H112.18101.11042.58973.11883.52803.85534.41043.18013.83011.78981.7927
H122.18101.11042.58973.52803.11884.41043.85533.83013.18011.78981.7927

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 111.057 C1 C2 H11 111.541
C1 C2 H12 111.541 C1 C4 H5 59.957
C1 C4 H6 118.646 C1 C4 H8 117.510
C1 H5 C4 59.957 C1 H5 H7 118.646
C1 H5 H9 117.510 C2 C1 C3 114.582
C2 C1 C4 120.334 C2 C1 H5 120.334
C3 C1 C4 115.419 C3 C1 H5 115.419
C4 C1 H5 60.087 C4 H5 H7 118.276
C4 H5 H9 117.718 H5 C4 H6 118.276
H5 C4 H8 117.718 H6 C4 H8 114.271
H7 H5 H9 114.271 H10 C2 H11 107.418
H10 C2 H12 107.418 H11 C2 H12 107.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.147      
2 C -0.000      
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 1.786 0.149 0.000
y 0.149 -1.003 0.000
z 0.000 0.000 -0.784
Polar
3z2-r2-1.567
x2-y21.859
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 -0.513 0.000
y -0.513 6.943 0.000
z 0.000 0.000 6.388


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