return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-196.246591
Energy at 298.15K-196.256567
HF Energy-196.246591
Nuclear repulsion energy174.641968
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 PBEPBEultrafine/6-31G*
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 3164 3112 21.44      
2 A 3085 3034 10.45      
3 A 3069 3018 22.41      
4 A 3065 3014 25.76      
5 A 3062 3012 40.74      
6 A 3020 2970 23.40      
7 A 3013 2963 15.54      
8 A 2987 2938 27.10      
9 A 2967 2918 26.03      
10 A 2952 2903 28.93      
11 A 1687 1659 13.37      
12 A 1491 1466 2.96      
13 A 1484 1460 5.28      
14 A 1477 1452 10.91      
15 A 1466 1442 10.92      
16 A 1454 1430 1.86      
17 A 1423 1400 0.26      
18 A 1388 1365 4.26      
19 A 1383 1360 2.88      
20 A 1323 1301 1.96      
21 A 1286 1264 2.38      
22 A 1248 1228 2.04      
23 A 1093 1075 0.67      
24 A 1073 1055 6.31      
25 A 1032 1015 1.28      
26 A 1009 992 1.13      
27 A 979 963 1.31      
28 A 930 915 1.49      
29 A 876 861 41.96      
30 A 784 771 2.01      
31 A 766 753 1.58      
32 A 705 693 0.11      
33 A 521 512 5.55      
34 A 420 413 1.63      
35 A 387 380 0.65      
36 A 255 251 0.13      
37 A 221 218 0.44      
38 A 184 181 0.35      
39 A 67 66 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 29396.5 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 28911.5 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 PBEPBEultrafine/6-31G*
ABC
0.23919 0.12343 0.09371

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.983 1.340 0.026
H2 0.352 1.900 -0.688
H3 2.034 1.462 -0.285
H4 0.855 1.834 1.008
C5 -1.919 0.079 -0.394
H6 -1.892 1.176 -0.514
H7 -2.921 -0.188 -0.015
H8 -1.801 -0.372 -1.395
C9 -0.822 -0.420 0.565
H10 -0.931 -1.511 0.707
H11 -0.983 0.044 1.559
C12 0.588 -0.116 0.098
C13 1.446 -1.099 -0.233
H14 1.160 -2.156 -0.175
H15 2.466 -0.885 -0.572

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 H11 C12 C13 H14 H15
C11.10601.10201.10703.19242.93064.19263.56382.57803.50022.80991.51032.49633.50552.7400
H21.10601.78391.77092.92602.36493.94013.20862.88663.90183.20602.17703.22524.16703.4987
H31.10201.78391.78854.18923.94305.22874.39293.52394.31363.80932.17392.62843.72312.4041
H41.10701.77091.78853.57013.20924.40404.20662.84463.80382.62452.16903.23994.17283.5340
C53.19242.92604.18923.57011.10351.10351.10351.54062.17162.16642.56293.56973.81094.4937
H62.93062.36493.94303.20921.10351.77941.78302.20373.10322.53052.86304.05004.53084.8216
H74.19263.94015.22874.40401.10351.77941.78592.18982.49572.50733.51154.46634.53285.4601
H83.56383.20864.39294.20661.10351.78301.78592.19102.54353.09282.82863.52483.66544.3758
C92.57802.88663.52392.84461.54062.20372.18982.19101.10491.10911.51632.49862.73613.5099
H103.50023.90184.31363.80382.17163.10322.49572.54351.10491.77362.15012.58922.35923.6833
H112.80993.20603.80932.62452.16642.53052.50733.09281.10911.77362.15193.22833.52694.1597
C121.51032.17702.17392.16902.56292.86303.51152.82861.51632.15012.15191.34632.13542.1369
C132.49633.22522.62843.23993.56974.05004.46633.52482.49862.58923.22831.34631.09581.0957
H143.50554.16703.72314.17283.81094.53084.53283.66542.73612.35923.52692.13541.09581.8647
H152.74003.49872.40413.53404.49374.82165.46014.37583.50993.68334.15972.13691.09571.8647

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 116.817 C1 C12 C13 121.714
H2 C1 H3 107.787 H2 C1 H4 106.307
H2 C1 C12 111.696 H3 C1 H4 108.126
H3 C1 C12 111.688 H4 C1 C12 110.999
C5 C9 H10 109.233 C5 C9 H11 108.589
C5 C9 C12 113.939 H6 C5 H7 107.461
H6 C5 H8 107.777 H6 C5 C9 111.841
H7 C5 H8 108.032 H7 C5 C9 110.740
H8 C5 C9 110.826 C9 C12 C13 121.469
H10 C9 H11 106.473 H10 C9 C12 109.224
H11 C9 C12 109.116 C12 C13 H14 121.618
C12 C13 H15 121.769 H14 C13 H15 116.612
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.557      
2 H 0.170      
3 H 0.166      
4 H 0.165      
5 C -0.484      
6 H 0.159      
7 H 0.159      
8 H 0.165      
9 C -0.354      
10 H 0.153      
11 H 0.153      
12 C 0.245      
13 C -0.416      
14 H 0.138      
15 H 0.138      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.358 0.375 0.103 0.529
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.636 0.566 -0.775
y 0.566 -32.104 0.136
z -0.775 0.136 -34.034
Traceless
 xyz
x 0.433 0.566 -0.775
y 0.566 1.231 0.136
z -0.775 0.136 -1.665
Polar
3z2-r2-3.329
x2-y2-0.532
xy0.566
xz-0.775
yz0.136


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.314 -0.803 -0.735
y -0.803 8.844 0.353
z -0.735 0.353 6.081


<r2> (average value of r2) Å2
<r2> 144.642
(<r2>)1/2 12.027