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

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-195.424132
Energy at 298.15K-195.434042
Nuclear repulsion energy174.301668
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 mPW1PW91/3-21G
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 3178 3034 40.78      
2 A 3169 3025 16.16      
3 A 3154 3011 4.60      
4 A 3148 3006 12.81      
5 A 3060 2921 6.50      
6 A 3057 2919 51.74      
7 A 3051 2912 19.19      
8 A 1775 1695 0.77      
9 A 1566 1495 16.77      
10 A 1560 1489 3.63      
11 A 1547 1477 2.98      
12 A 1474 1407 5.30      
13 A 1463 1397 9.49      
14 A 1450 1384 9.92      
15 A 1422 1358 2.91      
16 A 1254 1197 5.63      
17 A 1156 1103 12.17      
18 A 1098 1049 9.36      
19 A 994 949 1.73      
20 A 979 935 3.33      
21 A 777 742 2.29      
22 A 537 513 2.70      
23 A 384 367 0.61      
24 A 309 295 0.22      
25 A 3108 2967 41.93      
26 A 3106 2965 11.36      
27 A 3104 2963 4.86      
28 A 1563 1492 28.58      
29 A 1557 1486 1.92      
30 A 1541 1471 1.32      
31 A 1144 1092 3.98      
32 A 1104 1054 0.02      
33 A 1056 1008 2.82      
34 A 852 813 19.65      
35 A 448 428 4.79      
36 A 264 252 2.39      
37 A 189 181 1.69      
38 A 155 148 0.09      
39 A 118 112 1.07      

Unscaled Zero Point Vibrational Energy (zpe) 30435.8 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 29054.0 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 mPW1PW91/3-21G
ABC
0.26885 0.11722 0.08554

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.509 0.468 0.000
H2 -1.947 -0.532 0.000
H3 -1.877 1.005 0.884
H4 -1.877 1.005 -0.884
C5 0.289 -2.088 0.000
H6 0.670 -2.617 -0.883
H7 0.670 -2.617 0.883
H8 -0.800 -2.173 0.000
C9 0.754 -0.658 0.000
H10 1.836 -0.531 0.000
C11 0.000 0.446 0.000
C12 0.630 1.820 0.000
H13 1.722 1.760 0.000
H14 0.313 2.388 0.884
H15 0.313 2.388 -0.884

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.09131.09771.09773.12523.87883.87882.73472.52793.49111.50952.53103.48012.79122.7912
H21.09131.77421.77422.72443.46103.46102.00282.70423.78322.17893.48924.32623.79703.7970
H31.09771.77421.76763.87824.76744.42803.47033.23564.11412.14882.78043.78212.59023.1361
H41.09771.77421.76763.87824.42804.76743.47033.23564.11412.14882.78043.78213.13612.5902
C53.12522.72443.87823.87821.09751.09751.09201.50412.19542.55063.92384.10684.56354.5635
H63.87883.46104.76744.42801.09751.76591.77142.15022.54753.25714.52464.58745.32035.0182
H73.87883.46104.42804.76741.09751.76591.77142.15022.54753.25714.52464.58745.01825.3203
H82.73472.00283.47033.47031.09201.77141.77142.17043.10572.73864.24214.67254.77814.7781
C92.52792.70423.23563.23561.50412.15022.15022.17041.08941.33682.48182.60483.20293.2029
H103.49113.78324.11414.11412.19542.54752.54753.10571.08942.07952.64272.29393.40963.4096
C111.50952.17892.14882.14882.55063.25713.25712.73861.33682.07951.51212.16622.15732.1573
C122.53103.48922.78042.78043.92384.52464.52464.24212.48182.64271.51211.09381.09781.0978
H133.48014.32623.78213.78214.10684.58744.58744.67252.60482.29392.16621.09381.77841.7784
H142.79123.79702.59023.13614.56355.32035.01824.77813.20293.40962.15731.09781.77841.7685
H152.79123.79703.13612.59024.56355.01825.32034.77813.20293.40962.15731.09781.77841.7685

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 125.165 C1 C11 C12 113.778
H2 C1 H3 108.291 H2 C1 H4 108.291
H2 C1 C11 112.827 H3 C1 H4 107.248
H3 C1 C11 110.003 H4 C1 C11 110.003
C5 C9 H10 114.728 C5 C9 C11 127.648
H6 C5 H7 107.128 H6 C5 H8 108.009
H6 C5 C9 110.509 H7 C5 H8 108.009
H7 C5 C9 110.509 H8 C5 C9 112.481
C9 C11 C12 121.057 H10 C9 C11 117.624
C11 C12 H13 111.449 C11 C12 H14 110.493
C11 C12 H15 110.493 H13 C12 H14 108.481
H13 C12 H15 108.481 H14 C12 H15 107.319
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.665      
2 H 0.222      
3 H 0.223      
4 H 0.223      
5 C -0.682      
6 H 0.225      
7 H 0.225      
8 H 0.221      
9 C -0.198      
10 H 0.199      
11 C -0.001      
12 C -0.649      
13 H 0.217      
14 H 0.219      
15 H 0.219      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.191 0.078 0.000 0.206
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.677 -0.334 0.000
y -0.334 -31.244 0.000
z 0.000 0.000 -34.470
Traceless
 xyz
x 1.180 -0.334 0.000
y -0.334 1.829 0.000
z 0.000 0.000 -3.009
Polar
3z2-r2-6.019
x2-y2-0.433
xy-0.334
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 150.500
(<r2>)1/2 12.268