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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G**
 hartrees
Energy at 0K-155.953526
Energy at 298.15K 
HF Energy-155.953526
Nuclear repulsion energy108.047427
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 B3LYPultrafine/6-31G**
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' 3281 3152 0.22 113.55 0.30 0.46
2 A' 3119 2997 19.14 86.82 0.72 0.84
3 A' 3033 2914 18.52 234.69 0.01 0.01
4 A' 3029 2910 88.64 74.32 0.33 0.50
5 A' 1877 1804 11.05 50.82 0.21 0.34
6 A' 1543 1483 9.50 17.17 0.39 0.56
7 A' 1495 1436 7.86 23.61 0.70 0.82
8 A' 1417 1362 0.43 18.45 0.58 0.74
9 A' 1202 1155 1.24 4.57 0.40 0.57
10 A' 1096 1053 11.30 1.30 0.25 0.41
11 A' 1078 1036 29.19 0.06 0.57 0.73
12 A' 984 945 3.53 9.98 0.49 0.66
13 A' 952 915 11.86 10.08 0.64 0.78
14 A' 683 656 0.22 16.84 0.59 0.74
15 A' 321 309 1.57 1.53 0.73 0.85
16 A" 3089 2968 0.26 86.97 0.75 0.86
17 A" 3087 2966 81.42 98.20 0.75 0.86
18 A" 1490 1432 6.70 18.06 0.75 0.86
19 A" 1129 1085 0.70 2.68 0.75 0.86
20 A" 1055 1014 1.09 4.63 0.75 0.86
21 A" 993 954 2.62 12.12 0.75 0.86
22 A" 734 705 25.30 1.21 0.75 0.86
23 A" 300 288 9.24 1.27 0.75 0.86
24 A" 160 154 0.46 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18573.6 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 17845.5 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 B3LYPultrafine/6-31G**
ABC
0.68946 0.21115 0.17235

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.031 -1.331 0.000
C3 1.158 -0.404 0.000
C4 -0.852 1.387 0.000
H5 -0.306 -1.871 0.912
H6 -0.306 -1.871 -0.912
H7 2.235 -0.345 0.000
H8 -0.255 2.304 0.000
H9 -1.507 1.397 -0.880
H10 -1.507 1.397 0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51141.29701.47832.26572.26572.29602.13962.12772.1277
C21.51141.50802.84021.09531.09532.47223.64233.22453.2245
C31.29701.50802.69312.26482.26481.07903.05483.33483.3348
C41.47832.84022.69313.42803.42803.54041.09411.09661.0966
H52.26571.09532.26483.42801.82473.10244.27433.91653.4823
H62.26571.09532.26483.42801.82473.10244.27433.48233.9165
H72.29602.47221.07903.54043.10243.10243.63544.22034.2203
H82.13963.64233.05481.09414.27434.27433.63541.77851.7785
H92.12773.22453.33481.09663.91653.48234.22031.77851.7602
H102.12773.22453.33481.09663.48233.91654.22031.77851.7602

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 50.877 H1 C2 C6 119.875
C2 C3 C6 24.739 C2 C3 C10 72.661
C2 C6 C3 35.181 C2 C6 H4 49.430
C2 C6 H5 33.594 C3 C2 C6 120.080
C3 C6 H4 51.681 C3 C6 H5 66.244
C3 C10 H7 9.428 C3 C10 H8 65.323
C3 C10 H9 74.698 H4 C6 H5 74.565
C6 C3 C10 86.539 H7 C10 H8 58.882
H7 C10 H9 77.963 H8 C10 H9 60.340
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.137      
2 C -0.249      
3 C -0.137      
4 C -0.394      
5 H 0.084      
6 H 0.084      
7 H 0.093      
8 H 0.125      
9 H 0.129      
10 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.157 0.907 0.000 0.921
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.240 -0.579 0.000
y -0.579 -24.879 0.000
z 0.000 0.000 -25.223
Traceless
 xyz
x 1.810 -0.579 0.000
y -0.579 -0.648 0.000
z 0.000 0.000 -1.163
Polar
3z2-r2-2.326
x2-y21.639
xy-0.579
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.572 -0.519 0.000
y -0.519 6.899 0.000
z 0.000 0.000 4.244


<r2> (average value of r2) Å2
<r2> 80.383
(<r2>)1/2 8.966