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

using model chemistry: PBEPBEultrafine/6-311G*

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/6-311G*
 hartrees
Energy at 0K-155.757781
Energy at 298.15K 
HF Energy-155.757781
Nuclear repulsion energy107.722342
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3183 3150 1.61 134.98 0.32 0.48
2 A' 3041 3009 22.35 99.61 0.71 0.83
3 A' 2956 2925 24.91 245.75 0.01 0.03
4 A' 2947 2916 100.89 131.00 0.22 0.36
5 A' 1819 1800 12.60 61.32 0.20 0.34
6 A' 1486 1470 7.13 16.26 0.34 0.51
7 A' 1450 1435 11.68 19.79 0.62 0.77
8 A' 1367 1353 0.62 16.22 0.61 0.76
9 A' 1171 1159 0.99 6.15 0.45 0.62
10 A' 1054 1043 10.61 2.74 0.28 0.44
11 A' 1024 1013 31.71 0.13 0.71 0.83
12 A' 958 949 7.57 8.17 0.49 0.66
13 A' 905 896 16.12 5.78 0.58 0.74
14 A' 668 661 0.80 14.92 0.62 0.76
15 A' 312 309 2.07 1.68 0.75 0.86
16 A" 3009 2977 0.50 99.80 0.75 0.86
17 A" 3004 2973 88.38 120.22 0.75 0.86
18 A" 1444 1429 9.91 12.82 0.75 0.86
19 A" 1094 1083 0.49 2.09 0.75 0.86
20 A" 1019 1009 0.58 3.69 0.75 0.86
21 A" 962 952 3.10 6.81 0.75 0.86
22 A" 681 674 30.02 0.83 0.75 0.86
23 A" 285 282 13.15 0.73 0.75 0.86
24 A" 160 158 0.47 0.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17999.6 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 17812.4 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/6-311G*
ABC
0.68386 0.21054 0.17173

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.182 0.000
C2 -0.049 -1.333 0.000
C3 1.157 -0.419 0.000
C4 -0.836 1.397 0.000
H5 -0.330 -1.870 0.920
H6 -0.330 -1.870 -0.920
H7 2.243 -0.372 0.000
H8 -0.228 2.315 0.000
H9 -1.497 1.417 -0.883
H10 -1.497 1.417 0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51581.30401.47492.27332.27332.31062.14522.13202.1320
C21.51581.51302.84151.10191.10192.48493.65253.23083.2308
C31.30401.51302.69642.27242.27241.08693.06503.34583.3458
C41.47492.84152.69643.43243.43243.55111.10061.10351.1035
H52.27331.10192.27243.43241.84003.11604.28673.92673.4885
H62.27331.10192.27243.43241.84003.11604.28673.48853.9267
H72.31062.48491.08693.55113.11603.11603.65104.23914.2391
H82.14523.65253.06501.10064.28674.28673.65101.78811.7881
H92.13203.23083.34581.10353.92673.48854.23911.78811.7660
H102.13203.23083.34581.10353.48853.92674.23911.78811.7660

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 51.002 H1 C2 C6 119.717
C2 C3 C6 24.870 C2 C3 C10 72.494
C2 C6 C3 35.271 C2 C6 H4 49.414
C2 C6 H5 33.396 C3 C2 C6 119.859
C3 C6 H4 51.670 C3 C6 H5 66.118
C3 C10 H7 9.432 C3 C10 H8 65.312
C3 C10 H9 74.698 H4 C6 H5 74.453
C6 C3 C10 86.459 H7 C10 H8 58.870
H7 C10 H9 77.977 H8 C10 H9 60.408
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.139      
2 C -0.434      
3 C -0.222      
4 C -0.761      
5 H 0.195      
6 H 0.195      
7 H 0.184      
8 H 0.231      
9 H 0.237      
10 H 0.237      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.147 0.896 0.000 0.908
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.629 -0.622 0.000
y -0.622 -25.312 0.000
z 0.000 0.000 -25.799
Traceless
 xyz
x 1.926 -0.622 0.000
y -0.622 -0.598 0.000
z 0.000 0.000 -1.328
Polar
3z2-r2-2.656
x2-y21.683
xy-0.622
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.124 -0.604 0.000
y -0.604 7.627 0.000
z 0.000 0.000 4.720


<r2> (average value of r2) Å2
<r2> 80.973
(<r2>)1/2 8.998