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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: HF/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-154.940121
Energy at 298.15K-154.946157
Nuclear repulsion energy110.280554
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/6-311+G(3df,2p)
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 3273 2974 12.79      
2 A1 3252 2955 15.48      
3 A1 1964 1785 11.05      
4 A1 1611 1464 1.52      
5 A1 1562 1419 0.46      
6 A1 1158 1053 0.00      
7 A1 1127 1024 4.57      
8 A1 793 721 10.35      
9 A2 3319 3016 0.00      
10 A2 1270 1154 0.00      
11 A2 1036 942 0.00      
12 A2 669 607 0.00      
13 B1 3334 3029 19.51      
14 B1 1197 1087 2.87      
15 B1 1046 950 54.56      
16 B1 808 734 2.21      
17 B1 337 306 5.79      
18 B2 3352 3045 12.47      
19 B2 3248 2951 19.80      
20 B2 1572 1428 2.20      
21 B2 1239 1126 6.96      
22 B2 1198 1088 0.38      
23 B2 970 882 17.88      
24 B2 385 349 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 19858.9 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 18043.8 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/6-311+G(3df,2p)
ABC
0.66314 0.23335 0.18510

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.622
C2 0.000 0.000 0.317
H3 0.000 0.918 2.180
H4 0.000 -0.918 2.180
C5 0.000 0.764 -0.925
C6 0.000 -0.764 -0.925
H7 0.904 1.263 -1.223
H8 -0.904 1.263 -1.223
H9 -0.904 -1.263 -1.223
H10 0.904 -1.263 -1.223

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.30481.07441.07442.65952.65953.24183.24183.24183.2418
C21.30482.07692.07691.45861.45862.18782.18782.18782.1878
H31.07442.07691.83613.10953.53183.53843.53844.14244.1424
H41.07442.07691.83613.53183.10954.14244.14243.53843.5384
C52.65951.45863.10953.53181.52721.07501.07502.23922.2392
C62.65951.45863.53183.10951.52722.23922.23921.07501.0750
H73.24182.18783.53844.14241.07502.23921.80813.10682.5264
H83.24182.18783.53844.14241.07502.23921.80812.52643.1068
H93.24182.18784.14243.53842.23921.07503.10682.52641.8081
H103.24182.18784.14243.53842.23921.07502.52643.10681.8081

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.431 C1 C2 C6 148.431
C2 C1 H3 121.298 C2 C1 H4 121.298
C2 C5 C6 58.431 C2 C5 H7 118.645
C2 C5 H8 118.645 C2 C6 C5 58.431
C2 C6 H9 118.645 C2 C6 H10 118.645
H3 C1 H4 117.404 C5 C2 C6 63.139
C5 C6 H9 117.693 C5 C6 H10 117.693
C6 C5 H7 117.693 C6 C5 H8 117.693
H7 C5 H8 114.488 H9 C6 H10 114.488
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.472      
2 C 0.291      
3 H 0.135      
4 H 0.135      
5 C -0.333      
6 C -0.333      
7 H 0.145      
8 H 0.145      
9 H 0.145      
10 H 0.145      


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 -0.488 0.488
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.902 0.000 0.000
y 0.000 -24.469 0.000
z 0.000 0.000 -24.738
Traceless
 xyz
x -1.299 0.000 0.000
y 0.000 0.851 0.000
z 0.000 0.000 0.448
Polar
3z2-r20.895
x2-y2-1.433
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.398 0.000 0.000
y 0.000 6.418 0.000
z 0.000 0.000 9.267


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