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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: LSDA/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 LSDA/6-31G
 hartrees
Energy at 0K-155.023902
Energy at 298.15K-155.029645
Nuclear repulsion energy108.980182
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 LSDA/6-31G
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 3092 3029 8.39      
2 A1 3081 3018 6.18      
3 A1 1864 1826 7.98      
4 A1 1459 1430 0.20      
5 A1 1427 1398 4.12      
6 A1 1084 1062 2.42      
7 A1 1041 1020 17.82      
8 A1 753 737 4.37      
9 A2 3156 3092 0.00      
10 A2 1147 1124 0.00      
11 A2 949 930 0.00      
12 A2 619 606 0.00      
13 B1 3170 3106 11.26      
14 B1 1082 1060 0.38      
15 B1 913 894 53.64      
16 B1 758 742 3.88      
17 B1 299 293 4.19      
18 B2 3181 3116 12.10      
19 B2 3078 3015 7.12      
20 B2 1432 1403 5.63      
21 B2 1141 1118 16.99      
22 B2 1085 1063 6.26      
23 B2 901 883 10.73      
24 B2 356 349 0.85      

Unscaled Zero Point Vibrational Energy (zpe) 18532.6 cm-1
Scaled (by 0.9797) Zero Point Vibrational Energy (zpe) 18156.4 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 LSDA/6-31G
ABC
0.64874 0.22814 0.18106

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.640
C2 0.000 0.000 0.317
H3 0.000 0.933 2.214
H4 0.000 -0.933 2.214
C5 0.000 0.769 -0.933
C6 0.000 -0.769 -0.933
H7 0.916 1.284 -1.243
H8 -0.916 1.284 -1.243
H9 -0.916 -1.284 -1.243
H10 0.916 -1.284 -1.243

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.32271.09581.09582.68592.68593.28683.28683.28683.2868
C21.32272.11402.11401.46831.46832.21932.21932.21932.2193
H31.09582.11401.86653.15193.57853.59423.59424.20864.2086
H41.09582.11401.86653.57853.15194.20864.20863.59423.5942
C52.68591.46833.15193.57851.53811.09611.09612.26992.2699
C62.68591.46833.57853.15191.53812.26992.26991.09611.0961
H73.28682.21933.59424.20861.09612.26991.83283.15552.5687
H83.28682.21933.59424.20861.09612.26991.83282.56873.1555
H93.28682.21934.20863.59422.26991.09613.15552.56871.8328
H103.28682.21934.20863.59422.26991.09612.56873.15551.8328

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.415 C1 C2 C6 148.415
C2 C1 H3 121.603 C2 C1 H4 121.603
C2 C5 C6 58.415 C2 C5 H7 119.151
C2 C5 H8 119.151 C2 C6 C5 58.415
C2 C6 H9 119.151 C2 C6 H10 119.151
H3 C1 H4 116.795 C5 C2 C6 63.171
C5 C6 H9 118.042 C5 C6 H10 118.042
C6 C5 H7 118.042 C6 C5 H8 118.042
H7 C5 H8 113.457 H9 C6 H10 113.457
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.434      
2 C 0.093      
3 H 0.149      
4 H 0.149      
5 C -0.353      
6 C -0.353      
7 H 0.187      
8 H 0.187      
9 H 0.187      
10 H 0.187      


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 -0.447 0.447
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.972 0.000 0.000
y 0.000 -23.872 0.000
z 0.000 0.000 -24.251
Traceless
 xyz
x -0.911 0.000 0.000
y 0.000 0.740 0.000
z 0.000 0.000 0.171
Polar
3z2-r20.342
x2-y2-1.101
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.913 0.000 0.000
y 0.000 5.848 0.000
z 0.000 0.000 8.191


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