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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-155.757574
Energy at 298.15K-155.763219
Nuclear repulsion energy108.880758
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/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3072 3040 11.42      
2 A1 3048 3017 12.80      
3 A1 1807 1788 5.20      
4 A1 1435 1420 0.12      
5 A1 1395 1381 0.23      
6 A1 1058 1047 2.04      
7 A1 997 987 3.39      
8 A1 745 737 3.09      
9 A2 3121 3089 0.00      
10 A2 1130 1118 0.00      
11 A2 929 919 0.00      
12 A2 593 587 0.00      
13 B1 3135 3102 12.86      
14 B1 1059 1048 0.56      
15 B1 875 866 33.08      
16 B1 725 718 1.44      
17 B1 287 284 2.35      
18 B2 3154 3121 10.34      
19 B2 3048 3017 14.46      
20 B2 1398 1383 1.15      
21 B2 1111 1099 6.95      
22 B2 1026 1015 1.34      
23 B2 889 880 11.42      
24 B2 346 342 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 18190.6 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 18003.2 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/6-31G(2df,p)
ABC
0.64742 0.22758 0.18065

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.643
C2 0.000 0.000 0.317
H3 0.000 0.933 2.215
H4 0.000 -0.933 2.215
C5 0.000 0.771 -0.935
C6 0.000 -0.771 -0.935
H7 0.918 1.283 -1.242
H8 -0.918 1.283 -1.242
H9 -0.918 -1.283 -1.242
H10 0.918 -1.283 -1.242

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.32561.09401.09402.69062.69063.28783.28783.28783.2878
C21.32562.11432.11431.47041.47042.21782.21782.21782.2178
H31.09402.11431.86513.15403.58083.59363.59364.20694.2069
H41.09402.11431.86513.58083.15404.20694.20693.59363.5936
C52.69061.47043.15403.58081.54141.09491.09492.27012.2701
C62.69061.47043.58083.15401.54142.27012.27011.09491.0949
H73.28782.21783.59364.20691.09492.27011.83583.15462.5655
H83.28782.21783.59364.20691.09492.27011.83582.56553.1546
H93.28782.21784.20693.59362.27011.09493.15462.56551.8358
H103.28782.21784.20693.59362.27011.09492.56553.15461.8358

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.390 C1 C2 C6 148.390
C2 C1 H3 121.522 C2 C1 H4 121.522
C2 C5 C6 58.390 C2 C5 H7 118.932
C2 C5 H8 118.932 C2 C6 C5 58.390
C2 C6 H9 118.932 C2 C6 H10 118.932
H3 C1 H4 116.956 C5 C2 C6 63.220
C5 C6 H9 117.880 C5 C6 H10 117.880
C6 C5 H7 117.880 C6 C5 H8 117.880
H7 C5 H8 113.926 H9 C6 H10 113.926
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.473      
2 C 0.388      
3 H 0.118      
4 H 0.118      
5 C -0.345      
6 C -0.345      
7 H 0.135      
8 H 0.135      
9 H 0.135      
10 H 0.135      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.433 0.433
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.785 0.000 0.000
y 0.000 -23.928 0.000
z 0.000 0.000 -24.372
Traceless
 xyz
x -0.635 0.000 0.000
y 0.000 0.650 0.000
z 0.000 0.000 -0.015
Polar
3z2-r2-0.031
x2-y2-0.857
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.397 0.000 0.000
y 0.000 6.141 0.000
z 0.000 0.000 8.626


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000