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All results from a given calculation for C5H10 (2-Butene, 2-methyl-)

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-196.268209
Energy at 298.15K-196.277920
Nuclear repulsion energy173.640062
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 PBEPBE/6-31G(2df,p)
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 3072 3040 44.62      
2 A 3068 3037 24.33      
3 A 3057 3026 15.04      
4 A 3051 3020 3.08      
5 A 2958 2928 10.88      
6 A 2955 2925 65.76      
7 A 2948 2918 26.97      
8 A 1701 1683 1.11      
9 A 1448 1433 8.18      
10 A 1446 1431 1.64      
11 A 1429 1414 1.24      
12 A 1368 1354 1.45      
13 A 1361 1347 1.92      
14 A 1355 1341 5.37      
15 A 1320 1306 2.49      
16 A 1204 1191 5.43      
17 A 1106 1094 10.73      
18 A 1037 1026 8.06      
19 A 943 933 3.46      
20 A 930 920 0.45      
21 A 762 754 1.81      
22 A 512 507 2.39      
23 A 368 364 0.45      
24 A 289 286 0.29      
25 A 3006 2975 19.65      
26 A 3004 2973 24.83      
27 A 3001 2970 15.76      
28 A 1438 1423 15.27      
29 A 1430 1415 1.21      
30 A 1418 1403 0.40      
31 A 1062 1051 0.44      
32 A 1018 1007 0.55      
33 A 982 972 1.77      
34 A 801 793 8.78      
35 A 442 438 1.79      
36 A 258 256 1.27      
37 A 187 185 1.14      
38 A 153 151 0.06      
39 A 131 130 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 29008.6 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 28709.8 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 PBEPBE/6-31G(2df,p)
ABC
0.26685 0.11639 0.08490

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.507 0.496 0.000
H2 -1.973 -0.499 0.000
H3 -1.882 1.045 0.883
H4 -1.882 1.045 -0.883
C5 0.266 -2.099 0.000
H6 0.648 -2.643 -0.883
H7 0.648 -2.643 0.883
H8 -0.830 -2.193 0.000
C9 0.738 -0.674 0.000
H10 1.830 -0.553 0.000
C11 0.000 0.453 0.000
C12 0.663 1.809 0.000
H13 1.761 1.729 0.000
H14 0.362 2.402 0.884
H15 0.362 2.402 -0.884

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.09921.10571.10573.14273.90823.90822.77252.53153.49771.50742.53583.49252.81142.8114
H21.09921.78161.78162.75123.49853.49852.04242.71613.80272.19073.50344.34803.82733.8273
H31.10571.78161.76643.90904.80854.47223.51713.25614.13702.16182.80023.81062.62233.1619
H41.10571.78161.76643.90904.47224.80853.51713.25614.13702.16182.80023.81063.16192.6223
C53.14272.75123.90903.90901.10531.10531.10021.50062.19872.56603.92764.10924.58774.5877
H63.90823.49854.80854.47221.10531.76671.77972.15922.55773.28394.53804.59655.35265.0525
H73.90823.49854.47224.80851.10531.76671.77972.15922.55773.28394.53804.59655.05255.3526
H82.77252.04243.51713.51711.10021.77971.77972.18263.12452.77314.27074.70014.82814.8281
C92.53152.71613.25613.25611.50062.15922.15922.18261.09861.34762.48412.61193.22263.2226
H103.49773.80274.13704.13702.19872.55772.55773.12451.09862.08832.63442.28313.41603.4160
C111.50742.19072.16182.16182.56603.28393.28392.77311.34762.08831.50882.17432.16992.1699
C122.53583.50342.80022.80023.92764.53804.53804.27072.48412.63441.50881.10091.10601.1060
H133.49254.34803.81063.81064.10924.59654.59654.70012.61192.28312.17431.10091.78651.7865
H142.81143.82732.62233.16194.58775.35265.05254.82813.22263.41602.16991.10601.78651.7670
H152.81143.82733.16192.62234.58775.05255.35264.82813.22263.41602.16991.10601.78651.7670

picture of 2-Butene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C11 C9 124.824 C1 C11 C12 114.437
H2 C1 H3 107.808 H2 C1 H4 107.808
H2 C1 C11 113.447 H3 C1 H4 106.030
H3 C1 C11 110.708 H4 C1 C11 110.708
C5 C9 H10 114.654 C5 C9 C11 128.475
H6 C5 H7 106.105 H6 C5 H8 107.599
H6 C5 C9 110.993 H7 C5 H8 107.599
H7 C5 C9 110.993 H8 C5 C9 113.216
C9 C11 C12 120.740 H10 C9 C11 116.871
C11 C12 H13 111.905 C11 C12 H14 111.235
C11 C12 H15 111.235 H13 C12 H14 108.091
H13 C12 H15 108.091 H14 C12 H15 106.033
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.508      
2 H 0.131      
3 H 0.133      
4 H 0.133      
5 C -0.471      
6 H 0.135      
7 H 0.135      
8 H 0.128      
9 C -0.124      
10 H 0.078      
11 C 0.336      
12 C -0.494      
13 H 0.128      
14 H 0.129      
15 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.183 0.049 0.000 0.189
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.147 -0.387 0.000
y -0.387 -31.728 0.000
z 0.000 0.000 -33.724
Traceless
 xyz
x 0.579 -0.387 0.000
y -0.387 1.207 0.000
z 0.000 0.000 -1.786
Polar
3z2-r2-3.572
x2-y2-0.419
xy-0.387
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.724 -0.963 0.000
y -0.963 11.142 0.000
z 0.000 0.000 6.153


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000