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All results from a given calculation for C5H10 (1-Butene, 2-methyl-)

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 C1 1A
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-194.065303
Energy at 298.15K-194.075767
Nuclear repulsion energy176.187433
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 3381 3051 20.92      
2 A 3310 2988 10.60      
3 A 3275 2956 42.50      
4 A 3267 2949 18.16      
5 A 3259 2942 50.64      
6 A 3241 2926 8.32      
7 A 3234 2919 23.07      
8 A 3203 2891 24.21      
9 A 3198 2886 29.09      
10 A 3189 2879 18.04      
11 A 1869 1687 14.89      
12 A 1677 1514 3.76      
13 A 1674 1511 9.66      
14 A 1669 1506 10.09      
15 A 1661 1499 13.47      
16 A 1650 1489 1.58      
17 A 1612 1455 0.23      
18 A 1578 1425 6.33      
19 A 1569 1416 6.03      
20 A 1484 1340 0.70      
21 A 1441 1301 1.98      
22 A 1387 1251 2.34      
23 A 1239 1118 0.20      
24 A 1221 1102 7.91      
25 A 1172 1058 6.87      
26 A 1125 1016 1.25      
27 A 1092 986 59.83      
28 A 1062 958 0.73      
29 A 987 891 0.95      
30 A 881 795 2.53      
31 A 816 737 1.50      
32 A 785 708 0.04      
33 A 593 536 9.53      
34 A 474 428 1.54      
35 A 421 380 0.85      
36 A 278 251 0.84      
37 A 237 214 0.24      
38 A 181 164 0.29      
39 A 69 62 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 32230.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 29091.2 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
0.23846 0.12544 0.09637

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.075 1.293 -0.008
H2 0.450 1.868 -0.683
H3 2.093 1.327 -0.377
H4 1.045 1.781 0.962
C5 -1.892 0.094 -0.430
H6 -1.792 1.135 -0.713
H7 -2.894 -0.053 -0.042
H8 -1.773 -0.516 -1.318
C9 -0.836 -0.302 0.630
H10 -0.996 -1.334 0.919
H11 -0.970 0.312 1.516
C12 0.580 -0.134 0.109
C13 1.328 -1.167 -0.223
H14 0.974 -2.177 -0.127
H15 2.325 -1.047 -0.605

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 H11 C12 C13 H14 H15
C11.08511.08271.08633.22772.95684.19103.61912.56963.47132.73281.51522.48273.47332.7193
H21.08511.75641.75232.94832.35863.90893.32002.84323.86113.04512.15683.19284.11603.4666
H31.08271.75641.75964.17103.90375.18454.38433.49884.27773.74072.15842.61313.68632.3961
H41.08631.75231.75963.66173.35754.45924.29092.82593.72392.55442.14713.19014.10523.4771
C53.22772.94834.17103.66171.08321.08451.08341.54722.15912.16372.54003.46453.66914.3719
H62.95682.35863.90373.35751.08321.75381.75782.18653.06472.51392.81283.90844.35454.6606
H74.19103.90895.18454.45921.08451.75381.76002.17862.48282.50153.47774.37034.41335.3422
H83.61913.32004.38434.29091.08341.75781.76002.17132.50533.05872.77793.35243.42394.1932
C92.56962.84323.49882.82591.54722.18652.17862.17131.08371.08611.51782.48232.71383.4745
H103.47133.86114.27773.72392.15913.06472.48282.50531.08371.75052.13992.59562.38493.6655
H112.73283.04513.74072.55442.16372.51392.50153.05871.08611.75052.14013.23993.55994.1477
C121.51522.15682.15842.14712.54002.81283.47772.77791.51782.13992.14011.31862.09382.0950
C132.48273.19282.61313.19013.46453.90844.37033.35242.48232.59563.23991.31861.07411.0739
H143.47334.11603.68634.10523.66914.35454.41333.42392.71382.38493.55992.09381.07411.8247
H152.71933.46662.39613.47714.37194.66065.34224.19323.47453.66554.14772.09501.07391.8247

picture of 1-Butene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C12 C9 115.820 C1 C12 C13 122.209
H2 C1 H3 108.238 H2 C1 H4 107.604
H2 C1 C12 111.005 H3 C1 H4 108.436
H3 C1 C12 111.281 H4 C1 C12 110.157
C5 C9 H10 109.024 C5 C9 H11 109.247
C5 C9 C12 111.931 H6 C5 H7 108.008
H6 C5 H8 108.449 H6 C5 C9 111.223
H7 C5 H8 108.556 H7 C5 C9 110.516
H8 C5 C9 110.009 C9 C12 C13 121.971
H10 C9 H11 107.557 H10 C9 C12 109.552
H11 C9 C12 109.427 C12 C13 H14 121.773
C12 C13 H15 121.917 H14 C13 H15 116.309
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.602 -0.198    
2 H 0.214 0.072    
3 H 0.213 0.068    
4 H 0.211 0.062    
5 C -0.578 -0.085    
6 H 0.201 0.024    
7 H 0.201 0.022    
8 H 0.210 0.023    
9 C -0.453 0.059    
10 H 0.219 0.007    
11 H 0.213 0.002    
12 C -0.034 0.120    
13 C -0.415 -0.584    
14 H 0.201 0.201    
15 H 0.201 0.206    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.296 0.349 0.067 0.462
CHELPG -0.235 0.339 0.066 0.417
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.329 0.484 -1.051
y 0.484 -32.663 0.166
z -1.051 0.166 -35.113
Traceless
 xyz
x 0.559 0.484 -1.051
y 0.484 1.558 0.166
z -1.051 0.166 -2.117
Polar
3z2-r2-4.234
x2-y2-0.666
xy0.484
xz-1.051
yz0.166


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.035 -0.971 -0.746
y -0.971 8.136 0.438
z -0.746 0.438 5.385


<r2> (average value of r2) Å2
<r2> 142.711
(<r2>)1/2 11.946