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 (2-Butene, 2-methyl-)

using model chemistry: B3LYP/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/LANL2DZ
 hartrees
Energy at 0K-196.513390
Energy at 298.15K-196.523145
Nuclear repulsion energy172.929115
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 B3LYP/LANL2DZ
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 3159 3036 74.86      
2 A 3149 3027 39.65      
3 A 3135 3013 6.54      
4 A 3130 3009 22.87      
5 A 3027 2909 15.19      
6 A 3023 2906 87.00      
7 A 3016 2899 34.53      
8 A 1747 1679 2.87      
9 A 1525 1465 16.75      
10 A 1522 1463 9.48      
11 A 1509 1451 3.98      
12 A 1450 1394 5.79      
13 A 1441 1385 14.19      
14 A 1434 1378 14.28      
15 A 1397 1343 1.50      
16 A 1253 1205 6.00      
17 A 1145 1101 12.18      
18 A 1082 1040 11.83      
19 A 981 943 2.48      
20 A 971 934 2.06      
21 A 770 740 2.41      
22 A 527 506 2.60      
23 A 382 367 0.68      
24 A 300 289 0.19      
25 A 3087 2967 61.28      
26 A 3085 2965 49.64      
27 A 3081 2961 3.31      
28 A 1518 1459 34.34      
29 A 1513 1454 0.74      
30 A 1502 1444 2.89      
31 A 1121 1078 3.54      
32 A 1080 1038 0.49      
33 A 1031 991 4.70      
34 A 851 818 22.84      
35 A 457 439 4.68      
36 A 260 250 2.97      
37 A 177 171 1.99      
38 A 128 123 0.01      
39 A 110 105 0.94      

Unscaled Zero Point Vibrational Energy (zpe) 30037.1 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 28871.7 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 B3LYP/LANL2DZ
ABC
0.26436 0.11496 0.08388

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.518 0.497 0.000
H2 -1.977 -0.496 0.000
H3 -1.888 1.040 0.883
H4 -1.888 1.040 -0.883
C5 0.269 -2.115 0.000
H6 0.649 -2.649 -0.883
H7 0.649 -2.649 0.883
H8 -0.822 -2.204 0.000
C9 0.745 -0.677 0.000
H10 1.832 -0.561 0.000
C11 0.000 0.456 0.000
C12 0.664 1.824 0.000
H13 1.757 1.746 0.000
H14 0.363 2.408 0.883
H15 0.363 2.408 -0.883

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.09381.10061.10063.16483.92173.92172.78942.54953.51281.51852.55373.50522.82322.8232
H21.09381.77391.77392.76843.50903.50902.06172.72753.80882.19363.51484.35503.83243.8324
H31.10061.77391.76573.92274.81384.47823.52713.26534.14502.16492.81213.81682.63463.1717
H41.10061.77391.76573.92274.47824.81383.52713.26534.14502.16492.81213.81683.17172.6346
C53.16482.76843.92273.92271.10021.10021.09481.51432.20382.58443.95854.13724.60934.6093
H63.92173.50904.81384.47821.10021.76611.77292.16332.55773.29314.56004.61795.36505.0659
H73.92173.50904.47824.81381.10021.76611.77292.16332.55773.29314.56004.61795.06595.3650
H82.78942.06173.52713.52711.09481.77291.77292.18783.12132.78374.29334.71714.84314.8431
C92.54952.72753.26533.26531.51432.16332.16332.18781.09311.35572.50242.62563.23183.2318
H103.51283.80884.14504.14502.20382.55772.55773.12131.09312.09492.65542.30743.42793.4279
C111.51852.19362.16492.16492.58443.29313.29312.78371.35572.09491.52102.18002.17352.1735
C122.55373.51482.81212.81213.95854.56004.56004.29332.50242.65541.52101.09631.10071.1007
H133.50524.35503.81683.81684.13724.61794.61794.71712.62562.30742.18001.09631.77851.7785
H142.82323.83242.63463.17174.60935.36505.06594.84313.23183.42792.17351.10071.77851.7663
H152.82323.83243.17172.63464.60935.06595.36504.84313.23183.42792.17351.10071.77851.7663

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 124.901 C1 C11 C12 114.314
H2 C1 H3 107.868 H2 C1 H4 107.868
H2 C1 C11 113.215 H3 C1 H4 106.669
H3 C1 C11 110.478 H4 C1 C11 110.478
C5 C9 H10 114.422 C5 C9 C11 128.357
H6 C5 H7 106.770 H6 C5 H8 107.742
H6 C5 C9 110.673 H7 C5 H8 107.742
H7 C5 C9 110.673 H8 C5 C9 112.982
C9 C11 C12 120.785 H10 C9 C11 117.221
C11 C12 H13 111.772 C11 C12 H14 110.989
C11 C12 H15 110.989 H13 C12 H14 108.091
H13 C12 H15 108.091 H14 C12 H15 106.708
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.737      
2 H 0.211      
3 H 0.203      
4 H 0.203      
5 C -0.680      
6 H 0.207      
7 H 0.207      
8 H 0.204      
9 C -0.295      
10 H 0.197      
11 C 0.402      
12 C -0.733      
13 H 0.211      
14 H 0.199      
15 H 0.199      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.210 0.110 0.000 0.237
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.769 -0.358 0.000
y -0.358 -31.356 0.000
z 0.000 0.000 -34.196
Traceless
 xyz
x 1.007 -0.358 0.000
y -0.358 1.627 0.000
z 0.000 0.000 -2.634
Polar
3z2-r2-5.268
x2-y2-0.413
xy-0.358
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.375 -0.956 -0.003
y -0.956 7.763 0.000
z -0.003 0.000 5.714


<r2> (average value of r2) Å2
<r2> 152.982
(<r2>)1/2 12.369