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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-155.935457
Energy at 298.15K-155.941203
Nuclear repulsion energy109.466790
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 B3PW91/6-311G*
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 3130 3013 16.34      
2 A1 3111 2995 16.91      
3 A1 1853 1784 6.94      
4 A1 1490 1435 0.02      
5 A1 1448 1394 1.41      
6 A1 1083 1043 2.62      
7 A1 1033 994 5.91      
8 A1 758 730 6.11      
9 A2 3182 3063 0.00      
10 A2 1174 1130 0.00      
11 A2 963 927 0.00      
12 A2 617 594 0.00      
13 B1 3196 3076 22.44      
14 B1 1101 1060 1.17      
15 B1 907 873 46.66      
16 B1 761 732 2.03      
17 B1 289 278 5.44      
18 B2 3212 3093 15.56      
19 B2 3109 2993 21.36      
20 B2 1453 1399 2.59      
21 B2 1149 1106 8.52      
22 B2 1066 1026 3.24      
23 B2 910 876 14.03      
24 B2 354 341 0.47      

Unscaled Zero Point Vibrational Energy (zpe) 18673.8 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 17977.2 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 B3PW91/6-311G*
ABC
0.65497 0.22984 0.18249

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.635
C2 0.000 0.000 0.317
H3 0.000 0.927 2.201
H4 0.000 -0.927 2.201
C5 0.000 0.767 -0.931
C6 0.000 -0.767 -0.931
H7 0.912 1.274 -1.235
H8 -0.912 1.274 -1.235
H9 -0.912 -1.274 -1.235
H10 0.912 -1.274 -1.235

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.31791.08681.08682.67792.67793.26963.26963.26963.2696
C21.31792.10052.10051.46461.46462.20532.20532.20532.2053
H31.08682.10051.85473.13673.56133.57223.57224.18184.1818
H41.08682.10051.85473.56133.13674.18184.18183.57223.5722
C52.67791.46463.13673.56131.53321.08731.08732.25602.2560
C62.67791.46463.56133.13671.53322.25602.25601.08731.0873
H73.26962.20533.57224.18181.08732.25601.82463.13432.5484
H83.26962.20533.57224.18181.08732.25601.82462.54843.1343
H93.26962.20534.18183.57222.25601.08733.13432.54841.8246
H103.26962.20534.18183.57222.25601.08732.54843.13431.8246

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.437 C1 C2 C6 148.437
C2 C1 H3 121.430 C2 C1 H4 121.430
C2 C5 C6 58.437 C2 C5 H7 118.842
C2 C5 H8 118.842 C2 C6 C5 58.437
C2 C6 H9 118.842 C2 C6 H10 118.842
H3 C1 H4 117.139 C5 C2 C6 63.125
C5 C6 H9 117.831 C5 C6 H10 117.831
C6 C5 H7 117.831 C6 C5 H8 117.831
H7 C5 H8 114.080 H9 C6 H10 114.080
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.533      
2 C 0.106      
3 H 0.216      
4 H 0.216      
5 C -0.475      
6 C -0.475      
7 H 0.236      
8 H 0.236      
9 H 0.236      
10 H 0.236      


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 -0.416 0.416
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.278 0.000 0.000
y 0.000 -24.157 0.000
z 0.000 0.000 -24.433
Traceless
 xyz
x -0.983 0.000 0.000
y 0.000 0.699 0.000
z 0.000 0.000 0.284
Polar
3z2-r20.569
x2-y2-1.121
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> 76.807
(<r2>)1/2 8.764