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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-155.909950
Energy at 298.15K-155.915562
Nuclear repulsion energy108.534878
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 BLYP/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 3037 3029 20.67      
2 A1 3017 3009 23.72      
3 A1 1767 1763 5.51      
4 A1 1456 1452 0.07      
5 A1 1420 1416 0.41      
6 A1 1025 1023 3.24      
7 A1 996 993 4.38      
8 A1 709 707 4.54      
9 A2 3081 3073 0.00      
10 A2 1139 1136 0.00      
11 A2 941 939 0.00      
12 A2 603 602 0.00      
13 B1 3095 3087 33.00      
14 B1 1071 1068 1.24      
15 B1 867 865 40.88      
16 B1 741 739 1.44      
17 B1 269 268 4.46      
18 B2 3110 3103 22.73      
19 B2 3017 3009 28.26      
20 B2 1425 1421 1.27      
21 B2 1113 1110 6.14      
22 B2 1028 1026 2.87      
23 B2 869 867 14.27      
24 B2 345 345 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 18069.7 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 18024.5 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 BLYP/6-311G*
ABC
0.64087 0.22641 0.17936

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.647
C2 0.000 0.000 0.319
H3 0.000 0.931 2.220
H4 0.000 -0.931 2.220
C5 0.000 0.777 -0.938
C6 0.000 -0.777 -0.938
H7 0.917 1.287 -1.247
H8 -0.917 1.287 -1.247
H9 -0.917 -1.287 -1.247
H10 0.917 -1.287 -1.247

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.32781.09331.09332.69892.69893.29743.29743.29743.2974
C21.32782.11642.11641.47761.47762.22502.22502.22502.2250
H31.09332.11641.86273.16113.58983.60353.60354.21674.2167
H41.09332.11641.86273.58983.16114.21674.21673.60353.6035
C52.69891.47763.16113.58981.55401.09381.09382.27972.2797
C62.69891.47763.58983.16111.55402.27972.27971.09381.0938
H73.29742.22503.60354.21671.09382.27971.83313.16062.5747
H83.29742.22503.60354.21671.09382.27971.83312.57473.1606
H93.29742.22504.21673.60352.27971.09383.16062.57471.8331
H103.29742.22504.21673.60352.27971.09382.57473.16061.8331

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.275 C1 C2 C6 148.275
C2 C1 H3 121.588 C2 C1 H4 121.588
C2 C5 C6 58.275 C2 C5 H7 119.078
C2 C5 H8 119.078 C2 C6 C5 58.275
C2 C6 H9 119.078 C2 C6 H10 119.078
H3 C1 H4 116.823 C5 C2 C6 63.450
C5 C6 H9 117.814 C5 C6 H10 117.814
C6 C5 H7 117.814 C6 C5 H8 117.814
H7 C5 H8 113.859 H9 C6 H10 113.859
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.485      
2 C 0.133      
3 H 0.188      
4 H 0.188      
5 C -0.429      
6 C -0.429      
7 H 0.208      
8 H 0.208      
9 H 0.208      
10 H 0.208      


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 -25.647 0.000 0.000
y 0.000 -24.722 0.000
z 0.000 0.000 -25.018
Traceless
 xyz
x -0.777 0.000 0.000
y 0.000 0.611 0.000
z 0.000 0.000 0.167
Polar
3z2-r20.333
x2-y2-0.925
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> 78.174
(<r2>)1/2 8.842