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

using model chemistry: B3LYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/3-21G*
 hartrees
Energy at 0K-195.476257
Energy at 298.15K-195.486141
Nuclear repulsion energy173.743789
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/3-21G*
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 3150 3030 46.17      
2 A 3139 3020 19.48      
3 A 3124 3006 3.95      
4 A 3117 2998 15.49      
5 A 3036 2921 8.55      
6 A 3034 2918 59.75      
7 A 3027 2912 18.62      
8 A 1751 1685 0.58      
9 A 1566 1507 13.22      
10 A 1560 1501 2.37      
11 A 1549 1490 1.99      
12 A 1472 1416 3.60      
13 A 1462 1407 5.03      
14 A 1450 1394 5.50      
15 A 1420 1366 3.82      
16 A 1241 1193 5.70      
17 A 1147 1103 11.79      
18 A 1090 1049 7.12      
19 A 985 948 0.85      
20 A 966 930 3.47      
21 A 763 734 1.96      
22 A 533 513 2.33      
23 A 384 369 0.51      
24 A 307 296 0.20      
25 A 3074 2957 50.28      
26 A 3070 2953 15.84      
27 A 3068 2952 5.61      
28 A 1562 1503 22.34      
29 A 1557 1498 1.81      
30 A 1543 1484 1.21      
31 A 1142 1098 2.76      
32 A 1101 1060 0.00      
33 A 1055 1015 2.25      
34 A 848 816 16.72      
35 A 444 427 3.73      
36 A 262 252 2.04      
37 A 189 182 1.40      
38 A 162 156 0.08      
39 A 121 117 0.92      

Unscaled Zero Point Vibrational Energy (zpe) 30234.9 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 29086.0 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/3-21G*
ABC
0.26672 0.11636 0.08487

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.517 0.471 0.000
H2 -1.955 -0.530 0.000
H3 -1.886 1.008 0.884
H4 -1.886 1.008 -0.884
C5 0.290 -2.097 0.000
H6 0.673 -2.626 -0.883
H7 0.673 -2.626 0.883
H8 -0.799 -2.185 0.000
C9 0.754 -0.660 0.000
H10 1.836 -0.534 0.000
C11 0.000 0.447 0.000
C12 0.635 1.827 0.000
H13 1.728 1.764 0.000
H14 0.320 2.397 0.885
H15 0.320 2.397 -0.885

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.09181.09861.09863.14003.89433.89432.75102.53613.50031.51692.54393.49292.80492.8049
H21.09181.77521.77522.73793.47583.47582.01892.71133.79082.18493.50164.33833.81073.8107
H31.09861.77521.76833.89374.78344.44483.48723.24494.12472.15692.79423.79622.60653.1499
H41.09861.77521.76833.89374.44484.78343.48723.24494.12472.15692.79423.79623.14992.6065
C53.14002.73793.89373.89371.09851.09851.09261.51082.19892.56103.93974.12034.58104.5810
H63.89433.47584.78344.44481.09851.76681.77292.15712.55113.26754.53994.60025.33695.0355
H73.89433.47584.44484.78341.09851.76681.77292.15712.55113.26754.53994.60025.03555.3369
H82.75102.01893.48723.48721.09261.77291.77292.17673.10982.75084.26094.68834.79924.7992
C92.53612.71133.24493.24491.51082.15712.15712.17671.08991.33892.48952.61193.21163.2116
H103.50033.79084.12474.12472.19892.55112.55113.10981.08992.08192.64902.30043.41673.4167
C111.51692.18492.15692.15692.56103.26753.26752.75081.33892.08191.51932.17262.16522.1652
C122.54393.50162.79422.79423.93974.53994.53994.26092.48952.64901.51931.09451.09861.0986
H133.49294.33833.79623.79624.12034.60024.60024.68832.61192.30042.17261.09451.77941.7794
H142.80493.81072.60653.14994.58105.33695.03554.79923.21163.41672.16521.09861.77941.7691
H152.80493.81073.14992.60654.58105.03555.33694.79923.21163.41672.16521.09861.77941.7691

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 125.149 C1 C11 C12 113.830
H2 C1 H3 108.282 H2 C1 H4 108.282
H2 C1 C11 112.746 H3 C1 H4 107.186
H3 C1 C11 110.083 H4 C1 C11 110.083
C5 C9 H10 114.485 C5 C9 C11 127.872
H6 C5 H7 107.066 H6 C5 H8 108.022
H6 C5 C9 110.529 H7 C5 H8 108.022
H7 C5 C9 110.529 H8 C5 C9 112.474
C9 C11 C12 121.021 H10 C9 C11 117.644
C11 C12 H13 111.409 C11 C12 H14 110.569
C11 C12 H15 110.569 H13 C12 H14 108.459
H13 C12 H15 108.459 H14 C12 H15 107.244
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.600      
2 H 0.198      
3 H 0.197      
4 H 0.197      
5 C -0.609      
6 H 0.199      
7 H 0.199      
8 H 0.197      
9 C -0.168      
10 H 0.169      
11 C 0.024      
12 C -0.582      
13 H 0.192      
14 H 0.194      
15 H 0.194      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.185 0.064 0.000 0.196
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.019 -0.308 0.000
y -0.308 -31.631 0.000
z 0.000 0.000 -34.513
Traceless
 xyz
x 1.053 -0.308 0.000
y -0.308 1.635 0.000
z 0.000 0.000 -2.688
Polar
3z2-r2-5.376
x2-y2-0.388
xy-0.308
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.000 -0.876 -0.000
y -0.876 7.509 0.001
z -0.000 0.001 5.244


<r2> (average value of r2) Å2
<r2> 151.635
(<r2>)1/2 12.314