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

using model chemistry: B3LYP/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/SDD
 hartrees
Energy at 0K-155.909985
Energy at 298.15K 
HF Energy-155.909985
Nuclear repulsion energy106.790305
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 B3LYP/SDD
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' 3320 3192 0.61 91.75 0.30 0.46
2 A' 3136 3014 27.34 75.48 0.73 0.84
3 A' 3075 2956 74.26 130.50 0.15 0.26
4 A' 3031 2914 32.27 198.68 0.01 0.03
5 A' 1840 1769 14.78 54.90 0.16 0.28
6 A' 1530 1471 2.80 10.73 0.51 0.68
7 A' 1509 1450 14.49 19.60 0.64 0.78
8 A' 1437 1381 4.46 9.31 0.66 0.80
9 A' 1186 1140 11.52 6.05 0.38 0.56
10 A' 1099 1056 26.60 2.20 0.26 0.41
11 A' 1072 1030 43.19 4.74 0.26 0.41
12 A' 974 936 2.22 13.92 0.32 0.49
13 A' 942 906 16.09 10.70 0.45 0.62
14 A' 646 621 0.64 18.19 0.63 0.77
15 A' 324 312 2.83 1.51 0.74 0.85
16 A" 3160 3038 61.85 71.50 0.75 0.86
17 A" 3106 2986 24.46 75.31 0.75 0.86
18 A" 1504 1446 15.02 13.48 0.75 0.86
19 A" 1111 1068 0.10 0.68 0.75 0.86
20 A" 1053 1012 1.86 4.01 0.75 0.86
21 A" 988 950 3.89 11.28 0.75 0.86
22 A" 749 720 54.23 3.64 0.75 0.86
23 A" 309 297 19.82 1.82 0.75 0.86
24 A" 144 138 0.31 0.46 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18621.5 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 17900.8 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 B3LYP/SDD
ABC
0.66778 0.20684 0.16820

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.186 0.000
C2 -0.072 -1.357 0.000
C3 1.166 -0.430 0.000
C4 -0.824 1.423 0.000
H5 -0.351 -1.885 0.915
H6 -0.351 -1.885 -0.915
H7 2.242 -0.391 0.000
H8 -0.199 2.324 0.000
H9 -1.477 1.451 -0.883
H10 -1.477 1.451 0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.54481.31821.48622.29172.29172.31502.14682.13592.1359
C21.54481.54662.87971.09281.09282.50763.68283.26153.2615
C31.31821.54662.71862.29272.29271.07703.07303.36173.3617
C41.48622.87972.71863.46493.46493.56241.09641.09901.0990
H52.29171.09282.29273.46491.82983.12954.31013.95373.5212
H62.29171.09282.29273.46491.82983.12954.31013.52123.9537
H72.31502.50761.07703.56243.12953.12953.65084.24324.2432
H82.14683.68283.07301.09644.31014.31013.65081.78221.7822
H92.13593.26153.36171.09903.95373.52124.24321.78221.7668
H102.13593.26153.36171.09903.52123.95374.24321.78221.7668

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 50.480 H1 C2 C6 119.674
C2 C3 C6 24.478 C2 C3 C10 72.911
C2 C6 C3 35.904 C2 C6 H4 49.608
C2 C6 H5 33.151 C3 C2 C6 119.618
C3 C6 H4 51.588 C3 C6 H5 66.481
C3 C10 H7 9.397 C3 C10 H8 65.159
C3 C10 H9 74.765 H4 C6 H5 74.690
C6 C3 C10 86.557 H7 C10 H8 58.721
H7 C10 H9 77.984 H8 C10 H9 60.286
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.205      
2 C -0.475      
3 C -0.355      
4 C -0.696      
5 H 0.201      
6 H 0.201      
7 H 0.256      
8 H 0.221      
9 H 0.221      
10 H 0.221      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.314 0.851 0.000 0.907
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.433 -0.395 0.000
y -0.395 -24.585 0.000
z 0.000 0.000 -25.481
Traceless
 xyz
x 1.600 -0.395 0.000
y -0.395 -0.129 0.000
z 0.000 0.000 -1.472
Polar
3z2-r2-2.943
x2-y21.152
xy-0.395
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.596 -0.547 0.000
y -0.547 6.908 0.000
z 0.000 0.000 4.131


<r2> (average value of r2) Å2
<r2> 81.853
(<r2>)1/2 9.047