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

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-155.726411
Energy at 298.15K 
HF Energy-155.726411
Nuclear repulsion energy107.528223
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 PBEPBEultrafine/6-31G*
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' 3209 3157 1.31 122.76 0.30 0.46
2 A' 3061 3011 17.08 90.24 0.72 0.84
3 A' 2971 2922 18.25 257.25 0.01 0.01
4 A' 2967 2918 89.51 68.70 0.42 0.59
5 A' 1832 1801 10.50 53.50 0.21 0.34
6 A' 1508 1483 9.61 18.71 0.39 0.56
7 A' 1463 1438 9.62 25.63 0.69 0.81
8 A' 1381 1358 0.30 24.62 0.56 0.72
9 A' 1183 1164 0.58 4.38 0.41 0.58
10 A' 1070 1052 15.13 1.48 0.36 0.53
11 A' 1041 1024 26.03 0.18 0.72 0.84
12 A' 968 952 5.15 9.73 0.54 0.70
13 A' 921 905 12.62 9.25 0.65 0.79
14 A' 676 664 0.41 16.81 0.59 0.74
15 A' 311 306 1.87 1.59 0.74 0.85
16 A" 3028 2978 4.93 94.04 0.75 0.86
17 A" 3022 2972 72.92 100.22 0.75 0.86
18 A" 1457 1433 7.95 18.93 0.75 0.86
19 A" 1104 1085 0.24 2.92 0.75 0.86
20 A" 1025 1009 1.19 4.78 0.75 0.86
21 A" 968 952 3.29 12.58 0.75 0.86
22 A" 692 681 25.01 1.21 0.75 0.86
23 A" 289 284 10.05 1.04 0.75 0.86
24 A" 160 157 0.54 0.39 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18152.6 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 17853.1 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 PBEPBEultrafine/6-31G*
ABC
0.68300 0.20955 0.17105

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.183 0.000
C2 -0.043 -1.333 0.000
C3 1.161 -0.420 0.000
C4 -0.843 1.398 0.000
H5 -0.327 -1.875 0.920
H6 -0.327 -1.875 -0.920
H7 2.249 -0.371 0.000
H8 -0.237 2.320 0.000
H9 -1.505 1.414 -0.886
H10 -1.505 1.414 0.886

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51701.30851.47832.27792.27792.31612.14912.13612.1361
C21.51701.51142.84561.10471.10472.48543.65763.23513.2351
C31.30851.51142.70552.27552.27551.08863.07523.35463.3546
C41.47832.84562.70553.43833.43833.56201.10301.10591.1059
H52.27791.10472.27553.43831.84023.12104.29473.93223.4931
H62.27791.10472.27553.43831.84023.12104.29473.49313.9322
H72.31612.48541.08863.56203.12103.12103.66294.24964.2496
H82.14913.65763.07521.10304.29474.29473.66291.79241.7924
H92.13613.23513.35461.10593.93223.49314.24961.79241.7716
H102.13613.23513.35461.10593.49313.93224.24961.79241.7716

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 51.195 H1 C2 C6 119.823
C2 C3 C6 24.845 C2 C3 C10 72.368
C2 C6 C3 35.089 C2 C6 H4 49.391
C2 C6 H5 33.607 C3 C2 C6 120.065
C3 C6 H4 51.784 C3 C6 H5 66.150
C3 C10 H7 9.415 C3 C10 H8 65.383
C3 C10 H9 74.689 H4 C6 H5 74.479
C6 C3 C10 86.360 H7 C10 H8 58.960
H7 C10 H9 77.969 H8 C10 H9 60.383
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.185      
2 C -0.372      
3 C -0.181      
4 C -0.593      
5 H 0.137      
6 H 0.137      
7 H 0.140      
8 H 0.180      
9 H 0.184      
10 H 0.184      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.168 0.914 0.000 0.929
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.164 -0.608 0.000
y -0.608 -24.794 0.000
z 0.000 0.000 -25.201
Traceless
 xyz
x 1.833 -0.608 0.000
y -0.608 -0.611 0.000
z 0.000 0.000 -1.222
Polar
3z2-r2-2.443
x2-y21.630
xy-0.608
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.664 -0.577 0.000
y -0.577 7.071 0.000
z 0.000 0.000 4.275


<r2> (average value of r2) Å2
<r2> 80.901
(<r2>)1/2 8.995