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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: B3LYP/SDD

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/SDD
 hartrees
Energy at 0K-155.934551
Energy at 298.15K-155.940322
Nuclear repulsion energy108.012847
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/SDD
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 3145 3024 10.79      
2 A1 3141 3019 17.51      
3 A1 1842 1771 10.75      
4 A1 1498 1440 0.02      
5 A1 1465 1408 4.39      
6 A1 1067 1026 16.92      
7 A1 1048 1008 2.25      
8 A1 716 688 8.58      
9 A2 3226 3101 0.00      
10 A2 1165 1120 0.00      
11 A2 965 927 0.00      
12 A2 630 606 0.00      
13 B1 3241 3116 31.69      
14 B1 1104 1061 0.08      
15 B1 967 930 83.21      
16 B1 762 732 6.75      
17 B1 311 299 5.66      
18 B2 3247 3121 19.90      
19 B2 3135 3013 20.55      
20 B2 1469 1412 6.18      
21 B2 1153 1109 24.34      
22 B2 1111 1068 4.16      
23 B2 896 862 16.63      
24 B2 359 345 0.85      

Unscaled Zero Point Vibrational Energy (zpe) 18831.1 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 18102.3 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/SDD
ABC
0.63374 0.22381 0.17708

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.658
C2 0.000 0.000 0.323
H3 0.000 0.929 2.225
H4 0.000 -0.929 2.225
C5 0.000 0.785 -0.945
C6 0.000 -0.785 -0.945
H7 0.913 1.291 -1.251
H8 -0.913 1.291 -1.251
H9 -0.913 -1.291 -1.251
H10 0.913 -1.291 -1.251

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.33501.08871.08872.71872.71873.31163.31163.31163.3116
C21.33502.11682.11681.49121.49122.23162.23162.23162.2316
H31.08872.11681.85883.17313.60363.61273.61274.22494.2249
H41.08872.11681.85883.60363.17314.22494.22493.61273.6127
C52.71871.49123.17313.60361.56961.08811.08812.28822.2882
C62.71871.49123.60363.17311.56962.28822.28821.08811.0881
H73.31162.23163.61274.22491.08812.28821.82643.16222.5814
H83.31162.23163.61274.22491.08812.28821.82642.58143.1622
H93.31162.23164.22493.61272.28821.08813.16222.58141.8264
H103.31162.23164.22493.61272.28821.08812.58143.16221.8264

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.245 C1 C2 C6 148.245
C2 C1 H3 121.381 C2 C1 H4 121.381
C2 C5 C6 58.245 C2 C5 H7 118.977
C2 C5 H8 118.977 C2 C6 C5 58.245
C2 C6 H9 118.977 C2 C6 H10 118.977
H3 C1 H4 117.239 C5 C2 C6 63.510
C5 C6 H9 117.707 C5 C6 H10 117.707
C6 C5 H7 117.707 C6 C5 H8 117.707
H7 C5 H8 114.119 H9 C6 H10 114.119
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.602      
2 C 0.225      
3 H 0.214      
4 H 0.214      
5 C -0.481      
6 C -0.481      
7 H 0.227      
8 H 0.227      
9 H 0.227      
10 H 0.227      


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 -0.439 0.439
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.311 0.000 0.000
y 0.000 -23.884 0.000
z 0.000 0.000 -24.334
Traceless
 xyz
x -1.202 0.000 0.000
y 0.000 0.939 0.000
z 0.000 0.000 0.263
Polar
3z2-r20.527
x2-y2-1.427
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.977 0.000 0.000
y 0.000 5.769 0.000
z 0.000 0.000 8.391


<r2> (average value of r2) Å2
<r2> 78.429
(<r2>)1/2 8.856