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

using model chemistry: B3LYP/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-155.909863
Energy at 298.15K 
HF Energy-155.909863
Nuclear repulsion energy106.798499
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/LANL2DZ
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' 3319 3190 0.63 91.87 0.30 0.46
2 A' 3136 3014 27.23 75.57 0.73 0.84
3 A' 3074 2955 74.02 130.67 0.15 0.26
4 A' 3031 2913 32.06 198.75 0.01 0.03
5 A' 1841 1770 14.74 54.93 0.16 0.28
6 A' 1530 1471 2.75 10.73 0.51 0.68
7 A' 1509 1451 14.54 19.65 0.64 0.78
8 A' 1437 1381 4.51 9.38 0.66 0.80
9 A' 1186 1140 11.49 6.06 0.39 0.56
10 A' 1099 1056 26.81 2.19 0.26 0.42
11 A' 1072 1030 43.33 4.73 0.26 0.41
12 A' 974 937 2.21 13.85 0.33 0.49
13 A' 943 906 16.14 10.70 0.45 0.62
14 A' 646 621 0.64 18.26 0.63 0.77
15 A' 324 312 2.82 1.52 0.74 0.85
16 A" 3160 3037 61.91 71.70 0.75 0.86
17 A" 3106 2986 24.55 75.53 0.75 0.86
18 A" 1505 1446 14.98 13.46 0.75 0.86
19 A" 1112 1069 0.10 0.71 0.75 0.86
20 A" 1054 1013 1.89 4.05 0.75 0.86
21 A" 988 950 3.91 11.34 0.75 0.86
22 A" 749 720 54.12 3.65 0.75 0.86
23 A" 309 297 19.89 1.86 0.75 0.86
24 A" 144 138 0.31 0.46 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18623.3 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 17900.7 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 B3LYP/LANL2DZ
ABC
0.66791 0.20687 0.16823

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.186 0.000
C2 -0.073 -1.357 0.000
C3 1.165 -0.430 0.000
C4 -0.823 1.423 0.000
H5 -0.352 -1.885 0.915
H6 -0.352 -1.885 -0.915
H7 2.241 -0.392 0.000
H8 -0.198 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
C11.54461.31801.48612.29152.29152.31482.14662.13582.1358
C21.54461.54642.87951.09281.09282.50753.68253.26143.2614
C31.31801.54642.71832.29252.29251.07713.07263.36143.3614
C41.48612.87952.71833.46483.46483.56201.09641.09901.0990
H52.29151.09282.29253.46481.82983.12934.30983.95373.5212
H62.29151.09282.29253.46481.82983.12934.30983.52123.9537
H72.31482.50751.07713.56203.12933.12933.65024.24294.2429
H82.14663.68253.07261.09644.30984.30983.65021.78221.7822
H92.13583.26143.36141.09903.95373.52124.24291.78221.7668
H102.13583.26143.36141.09903.52123.95374.24291.78221.7668

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 119.673
C2 C3 C6 24.480 C2 C3 C10 72.918
C2 C6 C3 35.903 C2 C6 H4 49.605
C2 C6 H5 33.150 C3 C2 C6 119.617
C3 C6 H4 51.582 C3 C6 H5 66.480
C3 C10 H7 9.400 C3 C10 H8 65.152
C3 C10 H9 74.764 H4 C6 H5 74.689
C6 C3 C10 86.566 H7 C10 H8 58.712
H7 C10 H9 77.983 H8 C10 H9 60.287
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.208      
2 C -0.478      
3 C -0.355      
4 C -0.701      
5 H 0.202      
6 H 0.202      
7 H 0.255      
8 H 0.222      
9 H 0.222      
10 H 0.222      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.314 0.853 0.000 0.909
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.421 -0.394 0.000
y -0.394 -24.569 0.000
z 0.000 0.000 -25.479
Traceless
 xyz
x 1.603 -0.394 0.000
y -0.394 -0.119 0.000
z 0.000 0.000 -1.484
Polar
3z2-r2-2.968
x2-y21.148
xy-0.394
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.583 -0.542 0.000
y -0.542 6.897 0.000
z 0.000 0.000 4.111


<r2> (average value of r2) Å2
<r2> 81.837
(<r2>)1/2 9.046