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All results from a given calculation for C4H6 (1-Methylcyclopropene)

using model chemistry: B2PLYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-155.852360
Energy at 298.15K 
HF Energy-155.636119
Nuclear repulsion energy108.431478
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 B2PLYP/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3295 3295 0.32 119.64 0.29 0.45
2 A' 3133 3133 16.12 81.73 0.71 0.83
3 A' 3061 3061 74.81 160.94 0.13 0.23
4 A' 3048 3048 24.12 214.95 0.01 0.03
5 A' 1848 1848 14.41 54.42 0.15 0.26
6 A' 1537 1537 5.16 11.69 0.35 0.52
7 A' 1495 1495 9.58 12.03 0.59 0.74
8 A' 1417 1417 0.11 5.81 0.56 0.72
9 A' 1194 1194 3.32 6.78 0.40 0.57
10 A' 1090 1090 1.37 3.76 0.10 0.19
11 A' 1068 1068 38.04 0.95 0.14 0.25
12 A' 983 983 3.92 9.73 0.26 0.41
13 A' 947 947 14.22 5.80 0.40 0.57
14 A' 675 675 0.63 14.20 0.57 0.73
15 A' 323 323 1.74 1.69 0.75 0.86
16 A" 3126 3126 42.88 100.34 0.75 0.86
17 A" 3106 3106 14.92 79.95 0.75 0.86
18 A" 1492 1492 8.04 7.67 0.75 0.86
19 A" 1130 1130 1.42 0.89 0.75 0.86
20 A" 1058 1058 0.23 2.27 0.75 0.86
21 A" 997 997 2.09 3.61 0.75 0.86
22 A" 733 733 33.39 0.67 0.75 0.86
23 A" 297 297 12.87 0.50 0.75 0.86
24 A" 163 163 0.35 0.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18608.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18608.1 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 B2PLYP/Def2TZVPP
ABC
0.69235 0.21284 0.17360

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.178 0.000
C2 -0.038 -1.329 0.000
C3 1.154 -0.404 0.000
C4 -0.846 1.385 0.000
H5 -0.306 -1.858 0.911
H6 -0.306 -1.858 -0.911
H7 2.226 -0.349 0.000
H8 -0.245 2.293 0.000
H9 -1.495 1.394 -0.877
H10 -1.495 1.394 0.877

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50731.29271.47392.25152.25152.28752.12862.11662.1166
C21.50731.50852.83151.08721.08722.46683.62723.20973.2097
C31.29271.50852.68362.25302.25301.07343.03813.31913.3191
C41.47392.83152.68363.41153.41153.52751.08841.09071.0907
H52.25151.08722.25303.41151.82203.08544.24973.89623.4620
H62.25151.08722.25303.41151.82203.08544.24973.46203.8962
H72.28752.46681.07343.52753.08543.08543.61714.20104.2010
H82.12863.62723.03811.08844.24974.24973.61711.77151.7715
H92.11663.20973.31911.09073.89623.46204.20101.77151.7536
H102.11663.20973.31911.09073.46203.89624.20101.77151.7536

picture of 1-Methylcyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 50.761 H1 C2 C6 119.526
C2 C3 C6 24.817 C2 C3 C10 72.626
C2 C6 C3 35.616 C2 C6 H4 49.653
C2 C6 H5 33.080 C3 C2 C6 119.567
C3 C6 H4 51.770 C3 C6 H5 66.150
C3 C10 H7 9.399 C3 C10 H8 65.243
C3 C10 H9 74.683 H4 C6 H5 74.512
C6 C3 C10 86.505 H7 C10 H8 58.834
H7 C10 H9 77.953 H8 C10 H9 60.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.007      
2 C -0.181      
3 C -0.188      
4 C -0.204      
5 H 0.065      
6 H 0.065      
7 H 0.162      
8 H 0.094      
9 H 0.098      
10 H 0.098      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.161 0.875 0.000 0.889
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.883 -0.608 0.008
y -0.608 -25.539 0.003
z 0.008 0.003 -25.917
Traceless
 xyz
x 1.845 -0.608 0.008
y -0.608 -0.639 0.003
z 0.008 0.003 -1.206
Polar
3z2-r2-2.412
x2-y21.656
xy-0.608
xz0.008
yz0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.391 -0.539 -0.002
y -0.539 7.801 -0.001
z -0.002 -0.001 5.289


<r2> (average value of r2) Å2
<r2> 80.287
(<r2>)1/2 8.960