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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-155.905967
Energy at 298.15K-155.911714
Nuclear repulsion energy109.286277
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 B3PW91/6-31G*
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 3160 3023 14.08      
2 A1 3134 2998 13.51      
3 A1 1867 1786 4.62      
4 A1 1507 1442 0.04      
5 A1 1465 1401 0.21      
6 A1 1093 1046 1.99      
7 A1 1050 1005 5.45      
8 A1 766 733 5.12      
9 A2 3205 3066 0.00      
10 A2 1180 1128 0.00      
11 A2 966 925 0.00      
12 A2 618 592 0.00      
13 B1 3217 3078 18.71      
14 B1 1106 1058 0.29      
15 B1 913 873 42.58      
16 B1 763 730 1.59      
17 B1 294 281 3.07      
18 B2 3241 3100 13.87      
19 B2 3133 2997 17.04      
20 B2 1470 1407 0.98      
21 B2 1156 1106 8.60      
22 B2 1080 1033 3.28      
23 B2 918 878 12.12      
24 B2 353 338 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 18826.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 18011.3 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 B3PW91/6-31G*
ABC
0.65422 0.22877 0.18179

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.639
C2 0.000 0.000 0.317
H3 0.000 0.928 2.207
H4 0.000 -0.928 2.207
C5 0.000 0.767 -0.933
C6 0.000 -0.767 -0.933
H7 0.913 1.276 -1.238
H8 -0.913 1.276 -1.238
H9 -0.913 -1.276 -1.238
H10 0.913 -1.276 -1.238

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.32171.08801.08802.68382.68383.27713.27713.27713.2771
C21.32172.10532.10531.46661.46662.20942.20942.20942.2094
H31.08802.10531.85573.14423.56813.58103.58104.19054.1905
H41.08802.10531.85573.56813.14424.19054.19053.58103.5810
C52.68381.46663.14423.56811.53321.08931.08932.25832.2583
C62.68381.46663.56813.14421.53322.25832.25831.08931.0893
H73.27712.20943.58104.19051.08932.25831.82643.13852.5524
H83.27712.20943.58104.19051.08932.25831.82642.55243.1385
H93.27712.20944.19053.58102.25831.08933.13852.55241.8264
H103.27712.20944.19053.58102.25831.08932.55243.13851.8264

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.484 C1 C2 C6 148.484
C2 C1 H3 121.476 C2 C1 H4 121.476
C2 C5 C6 58.484 C2 C5 H7 118.896
C2 C5 H8 118.896 C2 C6 C5 58.484
C2 C6 H9 118.896 C2 C6 H10 118.896
H3 C1 H4 117.048 C5 C2 C6 63.031
C5 C6 H9 117.891 C5 C6 H10 117.891
C6 C5 H7 117.891 C6 C5 H8 117.891
H7 C5 H8 113.926 H9 C6 H10 113.926
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.487     -0.540
2 C 0.207     0.248
3 H 0.166     0.187
4 H 0.166     0.187
5 C -0.404     -0.347
6 C -0.404     -0.347
7 H 0.189     0.155
8 H 0.189     0.152
9 H 0.189     0.152
10 H 0.189     0.155


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 -0.422 0.422
CHELPG        
AIM        
ESP 0.023 0.000 -0.441 0.441


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.778 0.000 0.000
y 0.000 -23.743 0.000
z 0.000 0.000 -24.046
Traceless
 xyz
x -0.883 0.000 0.000
y 0.000 0.669 0.000
z 0.000 0.000 0.214
Polar
3z2-r20.428
x2-y2-1.035
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 76.772
(<r2>)1/2 8.762