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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-26.095717
Energy at 298.15K-26.101478
Nuclear repulsion energy58.045078
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 B3LYP/CEP-121G
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 3093 3014 19.25      
2 A1 3081 3003 21.64      
3 A1 1802 1756 7.43      
4 A1 1488 1450 0.07      
5 A1 1455 1417 1.06      
6 A1 1059 1032 8.64      
7 A1 1032 1006 3.61      
8 A1 705 687 9.04      
9 A2 3165 3084 0.00      
10 A2 1160 1131 0.00      
11 A2 968 943 0.00      
12 A2 629 613 0.00      
13 B1 3181 3100 41.01      
14 B1 1100 1072 1.00      
15 B1 944 920 56.78      
16 B1 759 740 2.74      
17 B1 299 292 5.45      
18 B2 3190 3109 27.84      
19 B2 3074 2996 27.80      
20 B2 1458 1420 1.60      
21 B2 1136 1107 13.24      
22 B2 1094 1066 3.44      
23 B2 880 858 15.94      
24 B2 344 335 0.55      

Unscaled Zero Point Vibrational Energy (zpe) 18547.5 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 18074.6 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 B3LYP/CEP-121G
ABC
0.62935 0.22193 0.17560

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.674
C2 0.000 0.000 0.334
H3 0.000 0.930 2.242
H4 0.000 -0.930 2.242
C5 0.000 0.788 -0.941
C6 0.000 -0.788 -0.941
H7 0.915 1.295 -1.247
H8 -0.915 1.295 -1.247
H9 -0.915 -1.295 -1.247
H10 0.915 -1.295 -1.247

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.34021.08981.08982.73092.73093.32343.32343.32343.3234
C21.34022.12312.12311.49851.49852.23872.23872.23872.2387
H31.08982.12311.85973.18623.61723.62573.62574.23804.2380
H41.08982.12311.85973.61723.18624.23804.23803.62573.6257
C52.73091.49853.18623.61721.57661.08951.08952.29542.2954
C62.73091.49853.61723.18621.57662.29542.29541.08951.0895
H73.32342.23873.62574.23801.08952.29541.82953.17032.5891
H83.32342.23873.62574.23801.08952.29541.82952.58913.1703
H93.32342.23874.23803.62572.29541.08953.17032.58911.8295
H103.32342.23874.23803.62572.29541.08952.58913.17031.8295

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.262 C1 C2 C6 148.262
C2 C1 H3 121.437 C2 C1 H4 121.437
C2 C5 C6 58.262 C2 C5 H7 118.921
C2 C5 H8 118.921 C2 C6 C5 58.262
C2 C6 H9 118.921 C2 C6 H10 118.921
H3 C1 H4 117.126 C5 C2 C6 63.477
C5 C6 H9 117.691 C5 C6 H10 117.691
C6 C5 H7 117.691 C6 C5 H8 117.691
H7 C5 H8 114.202 H9 C6 H10 114.202
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.413      
2 C 0.286      
3 H 0.124      
4 H 0.124      
5 C -0.377      
6 C -0.377      
7 H 0.158      
8 H 0.158      
9 H 0.158      
10 H 0.158      


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 -0.444 0.444
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.649 0.000 0.000
y 0.000 -24.456 0.000
z 0.000 0.000 -24.842
Traceless
 xyz
x -1.000 0.000 0.000
y 0.000 0.790 0.000
z 0.000 0.000 0.211
Polar
3z2-r20.421
x2-y2-1.194
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.615 0.000 0.000
y 0.000 6.480 0.000
z 0.000 0.000 9.221


<r2> (average value of r2) Å2
<r2> 67.365
(<r2>)1/2 8.208