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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: BLYP/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 BLYP/6-31G**
 hartrees
Energy at 0K-155.880976
Energy at 298.15K-155.886592
Nuclear repulsion energy108.348750
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/6-31G**
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 3061 3037 16.00      
2 A1 3033 3010 18.17      
3 A1 1780 1766 3.57      
4 A1 1460 1448 0.07      
5 A1 1421 1410 0.02      
6 A1 1032 1024 2.53      
7 A1 1008 1000 2.47      
8 A1 715 710 3.44      
9 A2 3101 3077 0.00      
10 A2 1136 1127 0.00      
11 A2 936 929 0.00      
12 A2 600 595 0.00      
13 B1 3113 3089 25.78      
14 B1 1067 1058 0.42      
15 B1 872 865 31.15      
16 B1 733 727 1.09      
17 B1 277 275 2.05      
18 B2 3139 3115 18.01      
19 B2 3034 3011 20.81      
20 B2 1428 1417 0.20      
21 B2 1112 1103 6.08      
22 B2 1035 1027 1.52      
23 B2 873 867 12.10      
24 B2 343 340 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 18153.2 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 18013.5 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/6-31G**
ABC
0.63973 0.22538 0.17865

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.652
C2 0.000 0.000 0.320
H3 0.000 0.933 2.224
H4 0.000 -0.933 2.224
C5 0.000 0.777 -0.940
C6 0.000 -0.777 -0.940
H7 0.917 1.290 -1.249
H8 -0.917 1.290 -1.249
H9 -0.917 -1.290 -1.249
H10 0.917 -1.290 -1.249

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.33201.09411.09412.70532.70533.30453.30453.30453.3045
C21.33202.12022.12021.47981.47982.22862.22862.22862.2286
H31.09412.12021.86523.16723.59593.60963.60964.22394.2239
H41.09412.12021.86523.59593.16724.22394.22393.60963.6096
C52.70531.47983.16723.59591.55431.09571.09572.28272.2827
C62.70531.47983.59593.16721.55432.28272.28271.09571.0957
H73.30452.22863.60964.22391.09572.28271.83503.16602.5800
H83.30452.22863.60964.22391.09572.28271.83502.58003.1660
H93.30452.22864.22393.60962.28271.09573.16602.58001.8350
H103.30452.22864.22393.60962.28271.09572.58003.16601.8350

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.320 C1 C2 C6 148.320
C2 C1 H3 121.525 C2 C1 H4 121.525
C2 C5 C6 58.320 C2 C5 H7 119.082
C2 C5 H8 119.082 C2 C6 C5 58.320
C2 C6 H9 119.082 C2 C6 H10 119.082
H3 C1 H4 116.950 C5 C2 C6 63.361
C5 C6 H9 117.910 C5 C6 H10 117.910
C6 C5 H7 117.910 C6 C5 H8 117.910
H7 C5 H8 113.729 H9 C6 H10 113.729
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.299      
2 C 0.177      
3 H 0.080      
4 H 0.080      
5 C -0.232      
6 C -0.232      
7 H 0.107      
8 H 0.107      
9 H 0.107      
10 H 0.107      


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 -0.424 0.424
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.940 0.000 0.000
y 0.000 -24.100 0.000
z 0.000 0.000 -24.483
Traceless
 xyz
x -0.648 0.000 0.000
y 0.000 0.611 0.000
z 0.000 0.000 0.037
Polar
3z2-r20.073
x2-y2-0.839
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> 78.024
(<r2>)1/2 8.833