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

using model chemistry: HF/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 HF/3-21G*
 hartrees
Energy at 0K-194.064025
Energy at 298.15K-194.074461
Nuclear repulsion energy171.087760
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 HF/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' 3338 3013 22.29      
2 A' 3296 2975 24.07      
3 A' 3258 2941 36.17      
4 A' 3256 2939 18.54      
5 A' 3200 2889 18.80      
6 A' 3185 2875 34.57      
7 A' 3183 2873 30.07      
8 A' 1889 1705 0.13      
9 A' 1679 1516 5.19      
10 A' 1666 1504 10.27      
11 A' 1650 1490 2.09      
12 A' 1580 1426 3.31      
13 A' 1572 1419 7.96      
14 A' 1521 1373 5.71      
15 A' 1488 1343 0.55      
16 A' 1456 1314 1.86      
17 A' 1243 1122 3.33      
18 A' 1159 1047 3.74      
19 A' 1112 1004 0.77      
20 A' 1010 912 6.11      
21 A' 892 805 0.08      
22 A' 627 566 0.64      
23 A' 401 362 0.22      
24 A' 228 205 0.33      
25 A" 3265 2947 41.16      
26 A" 3226 2912 29.57      
27 A" 3202 2890 17.31      
28 A" 1674 1511 6.66      
29 A" 1658 1496 8.19      
30 A" 1439 1299 0.06      
31 A" 1241 1120 2.11      
32 A" 1209 1091 0.45      
33 A" 1131 1020 43.58      
34 A" 943 851 3.91      
35 A" 804 725 1.01      
36 A" 319 288 2.10      
37 A" 236 213 1.84      
38 A" 202 183 1.15      
39 A" 120 108 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 32276.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 29132.8 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 HF/3-21G*
ABC
0.44794 0.08216 0.07218

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.741 -1.209 0.000
C2 -0.970 -0.159 0.000
H3 -0.256 1.778 0.000
C4 0.000 0.731 0.000
H5 -2.933 -0.229 0.875
H6 -2.933 -0.229 -0.875
H7 -2.593 1.258 0.000
C8 -2.441 0.185 0.000
H9 1.929 0.931 -0.870
H10 1.929 0.931 0.870
C11 1.488 0.450 0.000
H12 2.950 -1.149 0.000
H13 1.481 -1.539 0.880
H14 1.481 -1.539 -0.880
C15 1.871 -1.040 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 H7 C8 H9 H10 C11 H12 H13 H14 C15
H11.07473.02662.07722.55562.55563.08472.19833.53073.53072.77913.69152.41312.41312.6178
C21.07472.06461.31662.15072.15072.15481.51093.21663.21662.53224.04262.94722.94722.9744
H33.02662.06461.07783.45863.45862.39472.70432.49962.49962.19204.34113.84653.84653.5310
C42.07721.31661.07783.20803.20802.64632.50152.12532.12531.51423.49802.84992.84992.5766
H52.55562.15073.45863.20801.75081.75831.08615.29434.99834.55786.01834.60464.92784.9502
H62.55562.15073.45863.20801.75081.75831.08614.99835.29434.55786.01834.92784.60464.9502
H73.08472.15482.39472.64631.75831.75831.08364.61674.61674.16056.04305.01985.01985.0211
C82.19831.51092.70432.50151.08611.08611.08364.51764.51763.93805.55334.37384.37384.4828
H93.53073.21662.49962.12535.29434.99834.61674.51761.73981.08722.47493.05972.51002.1553
H103.53073.21662.49962.12534.99835.29434.61674.51761.73981.08722.47492.51003.05972.1553
C112.77912.53222.19201.51424.55784.55784.16053.93801.08721.08722.16662.17512.17511.5389
H123.69154.04264.34113.49806.01836.01836.04305.55332.47492.47492.16661.75571.75571.0841
H132.41312.94723.84652.84994.60464.92785.01984.37383.05972.51002.17511.75571.75971.0838
H142.41312.94723.84652.84994.92784.60465.01984.37382.51003.05972.17511.75571.75971.0838
C152.61782.97443.53102.57664.95024.95025.02114.48282.15532.15531.53891.08411.08381.0838

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 120.277 H1 C2 C8 115.433
C2 C4 H3 118.811 C2 C4 C11 126.752
C2 C8 H5 110.756 C2 C8 H6 110.756
C2 C8 H7 111.240 H3 C4 C11 114.437
C4 C2 C8 124.289 C4 C11 H9 108.444
C4 C11 H10 108.444 C4 C11 C15 115.109
H5 C8 H6 107.412 H5 C8 H7 108.272
H6 C8 H7 108.272 H9 C11 H10 106.283
H9 C11 C15 109.100 H10 C11 C15 109.100
C11 C15 H12 110.173 C11 C15 H13 110.861
C11 C15 H14 110.861 H12 C15 H13 108.157
H12 C15 H14 108.157 H13 C15 H14 108.542
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.218 0.128    
2 C -0.238 -0.117    
3 H 0.209 0.157    
4 C -0.194 -0.322    
5 H 0.210 0.050    
6 H 0.210 0.050    
7 H 0.207 0.056    
8 C -0.618 -0.123    
9 H 0.218 -0.004    
10 H 0.218 -0.004    
11 C -0.462 0.189    
12 H 0.203 0.054    
13 H 0.204 0.059    
14 H 0.204 0.059    
15 C -0.590 -0.230    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.064 0.003 0.000 0.064
CHELPG 0.043 0.020 0.000 0.048
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.327 0.414 0.000
y 0.414 -32.576 0.000
z 0.000 0.000 -35.262
Traceless
 xyz
x 1.592 0.414 0.000
y 0.414 1.219 0.000
z 0.000 0.000 -2.811
Polar
3z2-r2-5.622
x2-y20.249
xy0.414
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.408 0.814 0.000
y 0.814 7.273 0.000
z 0.000 0.000 5.140


<r2> (average value of r2) Å2
<r2> 171.584
(<r2>)1/2 13.099