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

using model chemistry: mPW1PW91/6-31G(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 mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-196.511233
Energy at 298.15K-196.521077
Nuclear repulsion energy174.793477
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 mPW1PW91/6-31G(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 3168 3024 43.66      
2 A 3161 3018 23.64      
3 A 3148 3005 12.03      
4 A 3145 3003 6.88      
5 A 3048 2909 11.34      
6 A 3045 2907 60.94      
7 A 3037 2899 26.87      
8 A 1776 1695 1.40      
9 A 1500 1432 10.33      
10 A 1498 1430 1.47      
11 A 1481 1414 1.51      
12 A 1422 1358 2.26      
13 A 1417 1352 2.36      
14 A 1410 1346 5.37      
15 A 1368 1306 2.58      
16 A 1247 1190 4.64      
17 A 1142 1091 10.24      
18 A 1073 1024 7.19      
19 A 975 931 3.33      
20 A 962 919 0.64      
21 A 785 749 1.63      
22 A 526 502 2.36      
23 A 378 361 0.48      
24 A 297 283 0.29      
25 A 3100 2960 22.41      
26 A 3099 2958 24.40      
27 A 3094 2954 14.32      
28 A 1490 1423 16.96      
29 A 1482 1415 1.24      
30 A 1470 1403 0.48      
31 A 1104 1054 0.38      
32 A 1062 1014 0.90      
33 A 1018 972 2.04      
34 A 835 797 9.50      
35 A 459 438 2.11      
36 A 266 254 1.41      
37 A 188 179 1.11      
38 A 147 140 0.05      
39 A 129 124 0.62      

Unscaled Zero Point Vibrational Energy (zpe) 29974.1 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 28616.3 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 mPW1PW91/6-31G(2df,p)
ABC
0.27007 0.11789 0.08596

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.500 0.490 0.000
H2 -1.961 -0.498 0.000
H3 -1.870 1.034 0.877
H4 -1.870 1.034 -0.877
C5 0.268 -2.087 0.000
H6 0.649 -2.622 -0.877
H7 0.649 -2.622 0.877
H8 -0.819 -2.183 0.000
C9 0.734 -0.667 0.000
H10 1.816 -0.545 0.000
C11 0.000 0.449 0.000
C12 0.657 1.800 0.000
H13 1.746 1.722 0.000
H14 0.356 2.385 0.877
H15 0.356 2.385 -0.877

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.08981.09621.09623.12463.88173.88172.75812.51523.47371.50042.52283.47152.79352.7935
H21.08981.76691.76692.73683.47693.47692.03552.69953.77692.17703.48234.32023.80053.8005
H31.09621.76691.75413.88264.77314.43903.49553.23114.10482.14682.78213.78382.60413.1400
H41.09621.76691.75413.88264.43904.77313.49553.23114.10482.14682.78213.78383.14002.6041
C53.12462.73683.88263.88261.09591.09591.09071.49432.18472.54933.90544.08564.55734.5573
H63.88173.47694.77314.43901.09591.75441.76512.14442.53843.25844.50734.56555.31295.0148
H73.88173.47694.43904.77311.09591.75441.76512.14442.53843.25844.50734.56555.01485.3129
H82.75812.03553.49553.49551.09071.76511.76512.16983.10222.75584.24674.67184.79694.7969
C92.51522.69953.23113.23111.49432.14442.14442.16981.08921.33502.46742.59463.19733.1973
H103.47373.77694.10484.10482.18472.53842.53843.10221.08922.07022.61582.26883.38903.3890
C111.50042.17702.14682.14682.54933.25843.25842.75581.33502.07021.50192.16092.15512.1551
C122.52283.48232.78212.78213.90544.50734.50734.24672.46742.61581.50191.09181.09651.0965
H133.47154.32023.78383.78384.08564.56554.56554.67182.59462.26882.16091.09181.77171.7717
H142.79353.80052.60413.14004.55735.31295.01484.79693.19733.38902.15511.09651.77171.7547
H152.79353.80053.14002.60414.55735.01485.31294.79693.19733.38902.15511.09651.77171.7547

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 124.916 C1 C11 C12 114.340
H2 C1 H3 107.848 H2 C1 H4 107.848
H2 C1 C11 113.430 H3 C1 H4 106.268
H3 C1 C11 110.571 H4 C1 C11 110.571
C5 C9 H10 114.570 C5 C9 C11 128.497
H6 C5 H7 106.351 H6 C5 H8 107.651
H6 C5 C9 110.827 H7 C5 H8 107.651
H7 C5 C9 110.827 H8 C5 C9 113.224
C9 C11 C12 120.744 H10 C9 C11 116.933
C11 C12 H13 111.873 C11 C12 H14 111.110
C11 C12 H15 111.110 H13 C12 H14 108.120
H13 C12 H15 108.120 H14 C12 H15 106.279
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.528      
2 H 0.145      
3 H 0.148      
4 H 0.148      
5 C -0.501      
6 H 0.150      
7 H 0.150      
8 H 0.143      
9 C -0.152      
10 H 0.104      
11 C 0.277      
12 C -0.517      
13 H 0.144      
14 H 0.144      
15 H 0.144      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.175 0.062 0.000 0.186
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.825 -0.385 0.000
y -0.385 -31.515 0.000
z 0.000 0.000 -33.556
Traceless
 xyz
x 0.711 -0.385 0.000
y -0.385 1.176 0.000
z 0.000 0.000 -1.887
Polar
3z2-r2-3.773
x2-y2-0.310
xy-0.385
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.407 -0.980 0.000
y -0.980 10.657 0.000
z 0.000 0.000 6.020


<r2> (average value of r2) Å2
<r2> 149.880
(<r2>)1/2 12.243