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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: HF/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 HF/6-311G**
 hartrees
Energy at 0K-154.924992
Energy at 298.15K-154.931025
Nuclear repulsion energy110.050371
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/6-311G**
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 3276 2976 14.72      
2 A1 3254 2956 16.61      
3 A1 1977 1796 7.79      
4 A1 1608 1461 0.84      
5 A1 1557 1414 0.70      
6 A1 1157 1051 0.01      
7 A1 1129 1025 5.04      
8 A1 795 722 10.63      
9 A2 3324 3020 0.00      
10 A2 1269 1153 0.00      
11 A2 1036 942 0.00      
12 A2 669 607 0.00      
13 B1 3338 3033 28.22      
14 B1 1196 1087 2.26      
15 B1 1041 946 47.58      
16 B1 812 738 1.42      
17 B1 336 305 5.89      
18 B2 3357 3050 16.27      
19 B2 3248 2951 23.10      
20 B2 1566 1423 1.75      
21 B2 1236 1123 8.47      
22 B2 1189 1081 0.94      
23 B2 968 880 17.37      
24 B2 383 348 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 19859.9 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 18042.8 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/6-311G**
ABC
0.66069 0.23231 0.18433

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

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 0.319
H3 0.000 0.920 2.184
H4 0.000 -0.920 2.184
C5 0.000 0.765 -0.928
C6 0.000 -0.765 -0.928
H7 0.907 1.265 -1.225
H8 -0.907 1.265 -1.225
H9 -0.907 -1.265 -1.225
H10 0.907 -1.265 -1.225

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.30701.07661.07662.66562.66563.24783.24783.24783.2478
C21.30702.08042.08041.46241.46242.19202.19202.19202.1920
H31.07662.08041.84043.11613.53923.54463.54464.14984.1498
H41.07662.08041.84043.53923.11614.14984.14983.54463.5446
C52.66561.46243.11613.53921.52981.07721.07722.24312.2431
C62.66561.46243.53923.11611.52982.24312.24311.07721.0772
H73.24782.19203.54464.14981.07722.24311.81323.11292.5304
H83.24782.19203.54464.14981.07722.24311.81322.53043.1129
H93.24782.19204.14983.54462.24311.07723.11292.53041.8132
H103.24782.19204.14983.54462.24311.07722.53043.11291.8132

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.464 C1 C2 C6 148.464
C2 C1 H3 121.268 C2 C1 H4 121.268
C2 C5 C6 58.464 C2 C5 H7 118.549
C2 C5 H8 118.549 C2 C6 C5 58.464
C2 C6 H9 118.549 C2 C6 H10 118.549
H3 C1 H4 117.463 C5 C2 C6 63.073
C5 C6 H9 117.672 C5 C6 H10 117.672
C6 C5 H7 117.672 C6 C5 H8 117.672
H7 C5 H8 114.620 H9 C6 H10 114.620
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.219      
2 C -0.061      
3 H 0.107      
4 H 0.107      
5 C -0.213      
6 C -0.213      
7 H 0.123      
8 H 0.123      
9 H 0.123      
10 H 0.123      


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 -0.418 0.418
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.651 0.000 0.000
y 0.000 -24.444 0.000
z 0.000 0.000 -24.625
Traceless
 xyz
x -1.117 0.000 0.000
y 0.000 0.694 0.000
z 0.000 0.000 0.423
Polar
3z2-r20.846
x2-y2-1.207
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.358 0.000 0.000
y 0.000 5.910 0.000
z 0.000 0.000 8.651


<r2> (average value of r2) Å2
<r2> 76.302
(<r2>)1/2 8.735