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All results from a given calculation for C5H10 (2-Pentene, (E)-)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-194.518066
Energy at 298.15K-194.528257
HF Energy-194.061929
Nuclear repulsion energy169.571286
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 MP2/3-21G
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' 3187 3042 21.64      
2 A' 3157 3013 28.07      
3 A' 3145 3002 23.14      
4 A' 3141 2998 12.11      
5 A' 3086 2946 14.55      
6 A' 3072 2932 22.93      
7 A' 3068 2929 18.96      
8 A' 1718 1640 0.16      
9 A' 1609 1536 5.11      
10 A' 1599 1527 8.56      
11 A' 1584 1512 1.06      
12 A' 1493 1425 3.12      
13 A' 1490 1423 5.60      
14 A' 1434 1369 4.90      
15 A' 1393 1330 0.72      
16 A' 1372 1310 1.60      
17 A' 1172 1119 2.82      
18 A' 1096 1046 3.02      
19 A' 1063 1015 0.35      
20 A' 965 921 5.51      
21 A' 855 816 0.02      
22 A' 590 564 0.95      
23 A' 378 360 0.16      
24 A' 217 207 0.24      
25 A" 3164 3020 28.77      
26 A" 3133 2990 21.30      
27 A" 3098 2957 14.84      
28 A" 1602 1529 5.63      
29 A" 1586 1514 6.12      
30 A" 1362 1300 0.00      
31 A" 1174 1121 1.00      
32 A" 1131 1080 0.09      
33 A" 1031 984 33.09      
34 A" 869 829 4.47      
35 A" 732 699 0.35      
36 A" 309 295 1.76      
37 A" 220 210 1.48      
38 A" 192 183 1.36      
39 A" 112 107 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 30800.8 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 29399.4 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 MP2/3-21G
ABC
0.43555 0.08130 0.07125

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.723 -1.237 0.000
C2 -0.975 -0.178 0.000
H3 -0.280 1.802 0.000
C4 0.000 0.746 0.000
H5 -2.953 -0.267 0.886
H6 -2.953 -0.267 -0.886
H7 -2.610 1.236 0.000
C8 -2.460 0.150 0.000
H9 1.945 0.959 -0.881
H10 1.945 0.959 0.881
C11 1.500 0.475 0.000
H12 2.972 -1.138 0.000
H13 1.484 -1.526 0.889
H14 1.484 -1.526 -0.889
C15 1.883 -1.026 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 H7 C8 H9 H10 C11 H12 H13 H14 C15
H11.08873.07122.11092.58882.58883.11122.22323.56633.56632.80613.69672.39662.39662.6141
C21.08872.09831.34302.16992.16992.16211.52113.25503.25502.55944.06212.94132.94132.9806
H33.07122.09831.09233.49483.49482.39802.73502.53742.53742.21984.38383.86953.86953.5602
C42.11091.34301.09233.24563.24562.65582.53102.14612.14611.52423.51902.85532.85532.5856
H52.58882.16993.49483.24561.77231.77831.09685.35005.04994.60106.05464.61244.94224.9749
H62.58882.16993.49483.24561.77231.77831.09685.04995.35004.60106.05464.94224.61244.9749
H73.11122.16212.39802.65581.77831.77831.09614.64834.64834.18006.06635.01795.01795.0304
C82.22321.52112.73502.53101.09681.09681.09614.56474.56473.97325.58294.37644.37644.4992
H93.56633.25502.53742.14615.35005.04994.64834.56471.76151.09902.49513.08502.52692.1726
H103.56633.25502.53742.14615.04995.35004.64834.56471.76151.09902.49512.52693.08502.1726
C112.80612.55942.21981.52424.60104.60104.18003.97321.09901.09902.18392.18952.18951.5496
H123.69674.06214.38383.51906.05466.05466.06635.58292.49512.49512.18391.77661.77661.0954
H132.39662.94133.86952.85534.61244.94225.01794.37643.08502.52692.18951.77661.77801.0948
H142.39662.94133.86952.85534.94224.61245.01794.37642.52693.08502.18951.77661.77801.0948
C152.61412.98063.56022.58564.97494.97495.03044.49922.17262.17261.54961.09541.09481.0948

picture of 2-Pentene, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 120.102 H1 C2 C8 115.837
C2 C4 H3 118.630 C2 C4 C11 126.298
C2 C8 H5 110.928 C2 C8 H6 110.928
C2 C8 H7 110.347 H3 C4 C11 115.072
C4 C2 C8 124.061 C4 C11 H9 108.706
C4 C11 H10 108.706 C4 C11 C15 114.529
H5 C8 H6 107.791 H5 C8 H7 108.375
H6 C8 H7 108.375 H9 C11 H10 106.521
H9 C11 C15 109.039 H10 C11 C15 109.039
C11 C15 H12 110.136 C11 C15 H13 110.609
C11 C15 H14 110.609 H12 C15 H13 108.418
H12 C15 H14 108.418 H13 C15 H14 108.584
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.180     0.110
2 C -0.182     -0.030
3 H 0.172     0.129
4 C -0.148     -0.244
5 H 0.191     0.116
6 H 0.191     0.116
7 H 0.187     0.117
8 C -0.574     -0.383
9 H 0.195     0.039
10 H 0.195     0.039
11 C -0.423     0.027
12 H 0.182     0.065
13 H 0.184     0.064
14 H 0.184     0.064
15 C -0.534     -0.229


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.057 -0.016 0.000 0.059
CHELPG        
AIM        
ESP 0.037 -0.005 0.000 0.037


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.711 0.422 0.000
y 0.422 -33.095 0.000
z 0.000 0.000 -35.317
Traceless
 xyz
x 1.495 0.422 0.000
y 0.422 0.919 0.000
z 0.000 0.000 -2.414
Polar
3z2-r2-4.828
x2-y20.384
xy0.422
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.149 0.541 0.000
y 0.541 7.203 0.000
z 0.000 0.000 5.174


<r2> (average value of r2) Å2
<r2> 173.644
(<r2>)1/2 13.177