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

using model chemistry: BLYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at BLYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-155.914393
Energy at 298.15K 
HF Energy-155.914393
Nuclear repulsion energy107.685473
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 BLYP/6-311+G(3df,2p)
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' 3175 3157 0.56 140.94 0.31 0.47
2 A' 3008 2992 21.15 96.51 0.68 0.81
3 A' 2941 2925 75.06 218.55 0.08 0.15
4 A' 2937 2921 41.24 194.10 0.06 0.11
5 A' 1791 1781 15.67 72.98 0.13 0.23
6 A' 1486 1478 5.67 10.05 0.36 0.53
7 A' 1448 1440 10.64 12.29 0.51 0.67
8 A' 1371 1363 0.29 11.51 0.44 0.61
9 A' 1140 1133 2.27 11.42 0.31 0.48
10 A' 1045 1039 1.28 3.76 0.09 0.16
11 A' 1019 1013 40.14 2.38 0.31 0.48
12 A' 938 933 1.24 9.19 0.20 0.34
13 A' 910 905 13.64 5.87 0.38 0.55
14 A' 640 636 0.38 14.84 0.60 0.75
15 A' 314 312 1.76 2.29 0.75 0.86
16 A" 2995 2979 49.87 124.60 0.75 0.86
17 A" 2976 2960 18.26 94.19 0.75 0.86
18 A" 1442 1434 7.77 5.91 0.75 0.86
19 A" 1091 1085 1.29 0.54 0.75 0.86
20 A" 1020 1014 0.21 1.40 0.75 0.86
21 A" 960 954 2.23 0.93 0.75 0.86
22 A" 695 691 32.41 1.81 0.75 0.86
23 A" 286 285 12.88 0.15 0.75 0.86
24 A" 160 159 0.39 0.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17893.1 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 17794.7 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 BLYP/6-311+G(3df,2p)
ABC
0.68213 0.21012 0.17128

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.038 -1.340 0.000
C3 1.160 -0.404 0.000
C4 -0.849 1.393 0.000
H5 -0.309 -1.876 0.917
H6 -0.309 -1.876 -0.917
H7 2.240 -0.344 0.000
H8 -0.248 2.310 0.000
H9 -1.506 1.406 -0.882
H10 -1.506 1.406 0.882

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52061.29891.48112.27252.27252.30032.14472.13302.1330
C21.52061.52032.85151.09611.09612.48613.65653.23673.2367
C31.29891.52032.69602.27332.27331.08143.05763.34133.3413
C41.48112.85152.69603.43833.43833.54411.09681.09951.0995
H52.27251.09612.27333.43831.83333.11274.28623.92943.4940
H62.27251.09612.27333.43831.83333.11274.28623.49403.9294
H72.30032.48611.08143.54413.11273.11273.63744.22784.2278
H82.14473.65653.05761.09684.28624.28623.63741.78311.7831
H92.13303.23673.34131.09953.92943.49404.22781.78311.7630
H102.13303.23673.34131.09953.49403.92944.22781.78311.7630

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 50.571 H1 C2 C6 119.676
C2 C3 C6 24.742 C2 C3 C10 72.829
C2 C6 C3 35.486 C2 C6 H4 49.526
C2 C6 H5 33.255 C3 C2 C6 119.772
C3 C6 H4 51.547 C3 C6 H5 66.221
C3 C10 H7 9.454 C3 C10 H8 65.217
C3 C10 H9 74.703 H4 C6 H5 74.538
C6 C3 C10 86.633 H7 C10 H8 58.745
H7 C10 H9 77.965 H8 C10 H9 60.372
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.063      
2 C -0.505      
3 C 0.034      
4 C -0.526      
5 H 0.146      
6 H 0.146      
7 H 0.191      
8 H 0.145      
9 H 0.152      
10 H 0.152      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.193 0.893 0.000 0.914
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.218 -0.637 0.000
y -0.637 -25.793 0.000
z 0.000 0.000 -26.199
Traceless
 xyz
x 1.778 -0.637 0.000
y -0.637 -0.585 0.000
z 0.000 0.000 -1.194
Polar
3z2-r2-2.387
x2-y21.575
xy-0.637
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.966 -0.697 0.000
y -0.697 8.455 0.000
z 0.000 0.000 5.773


<r2> (average value of r2) Å2
<r2> 81.372
(<r2>)1/2 9.021