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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-154.897890
Energy at 298.15K-154.903930
Nuclear repulsion energy110.068528
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 HF/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 3303 2982 14.95      
2 A1 3277 2958 17.07      
3 A1 2000 1805 5.23      
4 A1 1624 1466 0.77      
5 A1 1571 1418 0.06      
6 A1 1176 1061 0.05      
7 A1 1142 1031 4.73      
8 A1 806 728 9.38      
9 A2 3347 3021 0.00      
10 A2 1280 1155 0.00      
11 A2 1044 942 0.00      
12 A2 673 608 0.00      
13 B1 3361 3033 29.01      
14 B1 1205 1087 1.31      
15 B1 1046 944 44.60      
16 B1 820 740 0.77      
17 B1 338 305 3.92      
18 B2 3385 3056 17.15      
19 B2 3272 2953 23.94      
20 B2 1582 1428 0.36      
21 B2 1249 1128 8.65      
22 B2 1206 1088 1.42      
23 B2 979 884 16.09      
24 B2 386 349 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 20035.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 18084.1 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 HF/6-31G**
ABC
0.66203 0.23218 0.18432

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.626
C2 0.000 0.000 0.318
H3 0.000 0.920 2.186
H4 0.000 -0.920 2.186
C5 0.000 0.764 -0.928
C6 0.000 -0.764 -0.928
H7 0.906 1.266 -1.226
H8 -0.906 1.266 -1.226
H9 -0.906 -1.266 -1.226
H10 0.906 -1.266 -1.226

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.30781.07641.07642.66582.66583.24953.24953.24953.2495
C21.30782.08142.08141.46161.46162.19282.19282.19282.1928
H31.07642.08141.83913.11753.53943.54723.54724.15184.1518
H41.07642.08141.83913.53943.11754.15184.15183.54723.5472
C52.66581.46163.11753.53941.52731.07761.07762.24222.2422
C62.66581.46163.53943.11751.52732.24222.24221.07761.0776
H73.24952.19283.54724.15181.07762.24221.81123.11262.5313
H83.24952.19283.54724.15181.07762.24221.81122.53133.1126
H93.24952.19284.15183.54722.24221.07763.11262.53131.8112
H103.24952.19284.15183.54722.24221.07762.53133.11261.8112

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.503 C1 C2 C6 148.503
C2 C1 H3 121.319 C2 C1 H4 121.319
C2 C5 C6 58.503 C2 C5 H7 118.661
C2 C5 H8 118.661 C2 C6 C5 58.503
C2 C6 H9 118.661 C2 C6 H10 118.661
H3 C1 H4 117.363 C5 C2 C6 62.993
C5 C6 H9 117.767 C5 C6 H10 117.767
C6 C5 H7 117.767 C6 C5 H8 117.767
H7 C5 H8 114.357 H9 C6 H10 114.357
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.341 -0.526    
2 C 0.084 0.220    
3 H 0.129 0.178    
4 H 0.129 0.178    
5 C -0.287 -0.236    
6 C -0.287 -0.236    
7 H 0.144 0.105    
8 H 0.144 0.105    
9 H 0.144 0.105    
10 H 0.144 0.105    


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 -0.412 0.412
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.344 0.000 0.000
y 0.000 -24.195 0.000
z 0.000 0.000 -24.404
Traceless
 xyz
x -1.045 0.000 0.000
y 0.000 0.680 0.000
z 0.000 0.000 0.366
Polar
3z2-r20.731
x2-y2-1.150
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.914 0.000 0.000
y 0.000 5.623 0.000
z 0.000 0.000 8.181


<r2> (average value of r2) Å2
<r2> 76.149
(<r2>)1/2 8.726