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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-155.762993
Energy at 298.15K-155.768764
HF Energy-155.593638
Nuclear repulsion energy109.197216
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 B2PLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3180 3018 13.52      
2 A1 3159 2998 12.00      
3 A1 1860 1766 2.08      
4 A1 1531 1453 0.10      
5 A1 1487 1412 0.03      
6 A1 1087 1032 1.21      
7 A1 1070 1016 4.88      
8 A1 758 719 4.97      
9 A2 3231 3067 0.00      
10 A2 1197 1136 0.00      
11 A2 982 932 0.00      
12 A2 631 598 0.00      
13 B1 3243 3078 19.69      
14 B1 1123 1066 0.61      
15 B1 917 870 38.43      
16 B1 774 734 0.97      
17 B1 289 275 2.73      
18 B2 3261 3096 13.96      
19 B2 3157 2997 15.73      
20 B2 1497 1421 0.44      
21 B2 1167 1108 7.59      
22 B2 1098 1042 2.70      
23 B2 923 876 12.07      
24 B2 357 339 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 18988.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 18024.0 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 B2PLYP/6-31G*
ABC
0.65268 0.22831 0.18135

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.653
C2 0.000 0.000 0.307
H3 0.000 0.895 2.173
H4 0.000 -0.895 2.173
C5 0.000 0.746 -0.893
C6 0.000 -0.746 -0.893
H7 0.918 0.927 -1.347
H8 -0.918 0.927 -1.347
H9 -0.918 -0.927 -1.347
H10 0.918 -0.927 -1.347

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.34641.03531.03532.65382.65383.27173.27173.27173.2717
C21.34642.06992.06991.41351.41352.10642.10642.10642.1064
H31.03532.06991.79073.07023.47843.63823.63824.06874.0687
H41.03532.06991.79073.47843.07024.06874.06873.63823.6382
C52.65381.41353.07023.47841.49291.03961.03961.96151.9615
C62.65381.41353.47843.07021.49291.96151.96151.03961.0396
H73.27172.10643.63824.06871.03961.96151.83572.60841.8531
H83.27172.10643.63824.06871.03961.96151.83571.85312.6084
H93.27172.10644.06873.63821.96151.03962.60841.85311.8357
H103.27172.10644.06873.63821.96151.03961.85312.60841.8357

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.123 C1 C2 C6 148.123
C2 C1 H3 120.142 C2 C1 H4 120.142
C2 C5 C6 58.123 C2 C5 H7 117.526
C2 C5 H8 117.526 C2 C6 C5 58.123
C2 C6 H9 117.526 C2 C6 H10 117.526
H3 C1 H4 119.717 C5 C2 C6 63.754
C5 C6 H9 99.975 C5 C6 H10 99.975
C6 C5 H7 99.975 C6 C5 H8 99.975
H7 C5 H8 123.982 H9 C6 H10 123.982
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.435      
2 C 0.195      
3 H 0.151      
4 H 0.151      
5 C -0.375      
6 C -0.375      
7 H 0.172      
8 H 0.172      
9 H 0.172      
10 H 0.172      


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 -0.382 0.382
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.025 0.000 0.000
y 0.000 -24.126 0.000
z 0.000 0.000 -24.365
Traceless
 xyz
x -0.779 0.000 0.000
y 0.000 0.569 0.000
z 0.000 0.000 0.211
Polar
3z2-r20.421
x2-y2-0.899
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.923 0.000 0.000
y 0.000 5.711 0.000
z 0.000 0.000 8.048


<r2> (average value of r2) Å2
<r2> 77.080
(<r2>)1/2 8.780