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

using model chemistry: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-155.892123
Energy at 298.15K 
HF Energy-155.892123
Nuclear repulsion energy107.400204
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/6-311G*
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' 3162 3154 3.09 144.24 0.32 0.49
2 A' 3011 3004 29.11 104.90 0.71 0.83
3 A' 2941 2934 27.75 250.89 0.01 0.02
4 A' 2933 2926 107.52 123.05 0.24 0.39
5 A' 1796 1792 12.69 56.56 0.21 0.34
6 A' 1495 1491 8.12 17.08 0.33 0.50
7 A' 1464 1460 10.17 20.56 0.63 0.77
8 A' 1384 1380 0.21 16.51 0.59 0.74
9 A' 1150 1147 1.38 5.62 0.38 0.55
10 A' 1046 1044 4.75 2.14 0.27 0.43
11 A' 1017 1015 41.59 0.12 0.43 0.60
12 A' 942 939 1.60 8.51 0.49 0.65
13 A' 905 902 15.84 7.47 0.54 0.70
14 A' 643 642 0.30 15.39 0.62 0.76
15 A' 312 311 1.77 1.90 0.74 0.85
16 A" 2988 2980 63.68 120.17 0.75 0.86
17 A" 2980 2973 38.27 106.20 0.75 0.86
18 A" 1458 1454 8.31 13.47 0.75 0.86
19 A" 1097 1095 0.67 2.05 0.75 0.86
20 A" 1025 1023 0.74 2.73 0.75 0.86
21 A" 964 962 2.37 8.03 0.75 0.86
22 A" 680 678 29.25 0.84 0.75 0.86
23 A" 283 282 12.07 0.81 0.75 0.86
24 A" 158 157 0.36 0.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17915.9 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 17871.1 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 BLYP/6-311G*
ABC
0.68003 0.20882 0.17032

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.045 -1.344 0.000
C3 1.160 -0.414 0.000
C4 -0.842 1.403 0.000
H5 -0.322 -1.882 0.919
H6 -0.322 -1.882 -0.919
H7 2.244 -0.357 0.000
H8 -0.233 2.319 0.000
H9 -1.502 1.424 -0.883
H10 -1.502 1.424 0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52461.30291.48412.28082.28082.30732.15152.14042.1404
C21.52461.52172.85951.10021.10022.49233.66773.24983.2498
C31.30291.52172.70272.27912.27911.08563.06763.35253.3525
C41.48412.85952.70273.45043.45043.55211.09991.10251.1025
H52.28081.10022.27913.45041.83703.12264.30173.94583.5108
H62.28081.10022.27913.45041.83703.12264.30173.51083.9458
H72.30732.49231.08563.55213.12263.12263.64704.24044.2404
H82.15153.66773.06761.09994.30174.30173.64701.78581.7858
H92.14043.24983.35251.10253.94583.51084.24041.78581.7658
H102.14043.24983.35251.10253.51083.94584.24041.78581.7658

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 50.643 H1 C2 C6 119.794
C2 C3 C6 24.743 C2 C3 C10 72.936
C2 C6 C3 35.375 C2 C6 H4 49.417
C2 C6 H5 33.397 C3 C2 C6 119.883
C3 C6 H4 51.480 C3 C6 H5 66.233
C3 C10 H7 9.505 C3 C10 H8 65.220
C3 C10 H9 74.731 H4 C6 H5 74.562
C6 C3 C10 86.758 H7 C10 H8 58.693
H7 C10 H9 77.983 H8 C10 H9 60.370
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.132      
2 C -0.404      
3 C -0.209      
4 C -0.693      
5 H 0.177      
6 H 0.177      
7 H 0.175      
8 H 0.212      
9 H 0.217      
10 H 0.217      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.125 0.878 0.000 0.886
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.956 -0.559 0.000
y -0.559 -25.616 0.000
z 0.000 0.000 -25.978
Traceless
 xyz
x 1.841 -0.559 0.000
y -0.559 -0.649 0.000
z 0.000 0.000 -1.191
Polar
3z2-r2-2.383
x2-y21.660
xy-0.559
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.152 -0.583 0.000
y -0.583 7.671 0.000
z 0.000 0.000 4.731


<r2> (average value of r2) Å2
<r2> 81.621
(<r2>)1/2 9.034