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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: LSDA/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/3-21G*
 hartrees
Energy at 0K-154.215184
Energy at 298.15K-154.220936
Nuclear repulsion energy109.132254
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 LSDA/3-21G*
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 3080 3025 1.21      
2 A1 3077 3022 6.62      
3 A1 1848 1815 5.90      
4 A1 1463 1437 0.01      
5 A1 1435 1409 5.05      
6 A1 1046 1027 7.99      
7 A1 1023 1005 16.87      
8 A1 732 719 4.11      
9 A2 3155 3099 0.00      
10 A2 1143 1122 0.00      
11 A2 950 933 0.00      
12 A2 620 608 0.00      
13 B1 3170 3113 3.38      
14 B1 1092 1073 0.62      
15 B1 910 894 56.18      
16 B1 756 743 3.81      
17 B1 317 311 5.95      
18 B2 3160 3103 6.02      
19 B2 3077 3022 2.87      
20 B2 1431 1405 7.35      
21 B2 1145 1124 16.75      
22 B2 1067 1048 8.45      
23 B2 893 877 8.98      
24 B2 363 357 1.16      

Unscaled Zero Point Vibrational Energy (zpe) 18476.5 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 18143.9 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 LSDA/3-21G*
ABC
0.64569 0.22984 0.18208

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.632
C2 0.000 0.000 0.318
H3 0.000 0.934 2.204
H4 0.000 -0.934 2.204
C5 0.000 0.773 -0.931
C6 0.000 -0.773 -0.931
H7 0.923 1.278 -1.235
H8 -0.923 1.278 -1.235
H9 -0.923 -1.278 -1.235
H10 0.923 -1.278 -1.235

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.31411.09571.09572.67702.67703.27143.27143.27143.2714
C21.31412.10522.10521.46871.46872.21242.21242.21242.2124
H31.09572.10521.86873.13953.57003.57733.57734.19184.1918
H41.09572.10521.86873.57003.13954.19184.19183.57733.5773
C52.67701.46873.13953.57001.54561.09501.09502.26902.2690
C62.67701.46873.57003.13951.54562.26902.26901.09501.0950
H73.27142.21243.57734.19181.09502.26901.84613.15222.5551
H83.27142.21243.57734.19181.09502.26901.84612.55513.1522
H93.27142.21244.19183.57732.26901.09503.15222.55511.8461
H103.27142.21244.19183.57732.26901.09502.55513.15221.8461

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.251 C1 C2 C6 148.251
C2 C1 H3 121.491 C2 C1 H4 121.491
C2 C5 C6 58.251 C2 C5 H7 118.580
C2 C5 H8 118.580 C2 C6 C5 58.251
C2 C6 H9 118.580 C2 C6 H10 118.580
H3 C1 H4 117.018 C5 C2 C6 63.498
C5 C6 H9 117.448 C5 C6 H10 117.448
C6 C5 H7 117.448 C6 C5 H8 117.448
H7 C5 H8 114.912 H9 C6 H10 114.912
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.566      
2 C 0.004      
3 H 0.205      
4 H 0.205      
5 C -0.402      
6 C -0.402      
7 H 0.239      
8 H 0.239      
9 H 0.239      
10 H 0.239      


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 -0.394 0.394
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.196 0.000 0.000
y 0.000 -23.876 0.000
z 0.000 0.000 -24.078
Traceless
 xyz
x -1.219 0.000 0.000
y 0.000 0.761 0.000
z 0.000 0.000 0.458
Polar
3z2-r20.916
x2-y2-1.319
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.605 0.000 0.000
y 0.000 5.533 0.000
z 0.000 0.000 7.734


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