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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-155.770943
Energy at 298.15K 
HF Energy-155.770943
Nuclear repulsion energy108.398526
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 HSEh1PBE/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' 3309 3158 0.09 108.96 0.29 0.45
2 A' 3154 3010 14.76 85.46 0.73 0.84
3 A' 3055 2916 16.34 233.59 0.01 0.01
4 A' 3051 2912 85.52 81.05 0.31 0.47
5 A' 1904 1817 11.07 54.16 0.21 0.35
6 A' 1543 1472 8.57 16.47 0.39 0.57
7 A' 1489 1421 9.18 22.78 0.69 0.82
8 A' 1410 1346 0.22 17.12 0.60 0.75
9 A' 1228 1171 1.08 5.27 0.47 0.64
10 A' 1112 1061 19.30 2.14 0.29 0.45
11 A' 1086 1037 21.36 0.15 0.63 0.77
12 A' 999 953 8.08 9.46 0.49 0.66
13 A' 956 912 12.43 8.46 0.66 0.79
14 A' 706 673 0.57 16.34 0.58 0.74
15 A' 324 309 1.87 1.35 0.74 0.85
16 A" 3123 2981 6.37 88.11 0.75 0.86
17 A" 3114 2971 66.71 96.87 0.75 0.86
18 A" 1485 1417 8.21 17.37 0.75 0.86
19 A" 1133 1081 0.60 2.73 0.75 0.86
20 A" 1057 1009 0.91 6.13 0.75 0.86
21 A" 994 949 3.41 10.23 0.75 0.86
22 A" 737 704 28.23 1.13 0.75 0.86
23 A" 302 288 10.66 1.24 0.75 0.86
24 A" 161 154 0.53 0.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18715.6 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 17860.3 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 HSEh1PBE/6-31G**
ABC
0.69401 0.21278 0.17372

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.033 -1.323 0.000
C3 1.155 -0.407 0.000
C4 -0.848 1.383 0.000
H5 -0.310 -1.861 0.913
H6 -0.310 -1.861 -0.913
H7 2.232 -0.354 0.000
H8 -0.251 2.298 0.000
H9 -1.502 1.391 -0.879
H10 -1.502 1.391 0.879

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50291.29561.47142.25722.25722.29552.13322.12012.1201
C21.50291.50002.82501.09531.09532.46393.62753.20813.2081
C31.29561.50002.68592.25692.25691.07883.04903.32633.3263
C41.47142.82502.68593.41223.41223.53631.09331.09601.0960
H52.25721.09532.25693.41221.82523.09334.25893.89943.4634
H62.25721.09532.25693.41221.82523.09334.25893.46343.8994
H72.29552.46391.07883.53633.09333.09333.63384.21484.2148
H82.13323.62753.04901.09334.25894.25893.63381.77831.7783
H92.12013.20813.32631.09603.89943.46344.21481.77831.7588
H102.12013.20813.32631.09603.46343.89944.21481.77831.7588

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 51.121 H1 C2 C6 119.816
C2 C3 C6 24.845 C2 C3 C10 72.367
C2 C6 C3 35.128 C2 C6 H4 49.424
C2 C6 H5 33.569 C3 C2 C6 120.027
C3 C6 H4 51.811 C3 C6 H5 66.149
C3 C10 H7 9.375 C3 C10 H8 65.370
C3 C10 H9 74.670 H4 C6 H5 74.487
C6 C3 C10 86.362 H7 C10 H8 58.993
H7 C10 H9 77.957 H8 C10 H9 60.362
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.118      
2 C -0.296      
3 C -0.161      
4 C -0.469      
5 H 0.110      
6 H 0.110      
7 H 0.125      
8 H 0.151      
9 H 0.155      
10 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.165 0.910 0.000 0.925
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.017 -0.620 0.000
y -0.620 -24.703 0.000
z 0.000 0.000 -25.177
Traceless
 xyz
x 1.923 -0.620 0.000
y -0.620 -0.606 0.000
z 0.000 0.000 -1.317
Polar
3z2-r2-2.633
x2-y21.686
xy-0.620
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.552 -0.521 0.000
y -0.521 6.865 0.000
z 0.000 0.000 4.250


<r2> (average value of r2) Å2
<r2> 79.819
(<r2>)1/2 8.934