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: mPW1PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-196.560815
Energy at 298.15K-196.570683
Nuclear repulsion energy175.212763
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 mPW1PW91/cc-pVTZ
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 3154 3026 43.69      
2 A 3147 3019 24.28      
3 A 3133 3005 9.01      
4 A 3130 3003 9.95      
5 A 3040 2916 12.39      
6 A 3037 2913 65.80      
7 A 3030 2906 25.91      
8 A 1765 1693 1.83      
9 A 1498 1437 12.64      
10 A 1496 1435 1.90      
11 A 1480 1419 1.88      
12 A 1421 1363 3.31      
13 A 1419 1361 3.28      
14 A 1411 1353 7.14      
15 A 1371 1315 1.89      
16 A 1248 1197 4.37      
17 A 1140 1094 10.86      
18 A 1073 1029 6.77      
19 A 974 934 3.51      
20 A 961 922 1.03      
21 A 784 752 1.67      
22 A 528 506 2.17      
23 A 379 364 0.53      
24 A 298 286 0.26      
25 A 3084 2958 18.10      
26 A 3083 2957 29.82      
27 A 3079 2953 14.92      
28 A 1489 1428 19.04      
29 A 1482 1421 1.81      
30 A 1470 1410 0.79      
31 A 1104 1059 0.10      
32 A 1064 1020 1.38      
33 A 1017 975 2.78      
34 A 834 800 12.13      
35 A 458 439 3.23      
36 A 266 255 1.95      
37 A 188 180 1.17      
38 A 147 141 0.09      
39 A 127 122 0.61      

Unscaled Zero Point Vibrational Energy (zpe) 29902.9 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 28682.8 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 mPW1PW91/cc-pVTZ
ABC
0.27134 0.11849 0.08639

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.497 0.484 0.000
H2 -1.952 -0.503 0.000
H3 -1.866 1.025 0.875
H4 -1.866 1.025 -0.875
C5 0.268 -2.081 0.000
H6 0.648 -2.614 -0.875
H7 0.648 -2.614 0.875
H8 -0.815 -2.175 0.000
C9 0.734 -0.664 0.000
H10 1.814 -0.538 0.000
C11 0.000 0.448 0.000
C12 0.652 1.798 0.000
H13 1.739 1.722 0.000
H14 0.350 2.379 0.876
H15 0.350 2.379 -0.876

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.08691.09351.09353.11333.86843.86842.74482.50873.46471.49712.51873.46392.78732.7873
H21.08691.76321.76322.72383.46183.46182.02172.69103.76592.17143.47494.30923.79113.7911
H31.09351.76321.75053.86904.75724.42353.48023.22194.09312.14042.77583.77422.59703.1322
H41.09351.76321.75053.86904.42354.75723.48023.22194.09312.14042.77583.77423.13222.5970
C53.11332.72383.86903.86901.09301.09301.08781.49162.18332.54313.89724.07664.54554.5455
H63.86843.46184.75724.42351.09301.75031.76102.13942.53623.25034.49764.55555.29955.0019
H73.86843.46184.42354.75721.09301.75031.76102.13942.53623.25034.49764.55555.00195.2995
H82.74482.02173.48023.48021.08781.76101.76102.16453.09682.74704.23494.65894.78154.7815
C92.50872.69103.22193.22191.49162.13942.13942.16451.08681.33252.46262.58813.18933.1893
H103.46473.76594.09314.09312.18332.53622.53623.09681.08682.06482.60892.26133.37943.3794
C111.49712.17142.14042.14042.54313.25033.25032.74701.33252.06481.49872.15502.14872.1487
C122.51873.47492.77582.77583.89724.49764.49764.23492.46262.60891.49871.08901.09371.0937
H133.46394.30923.77423.77424.07664.55554.55554.65892.58812.26132.15501.08901.76821.7682
H142.78733.79112.59703.13224.54555.29955.00194.78153.18933.37942.14871.09371.76821.7515
H152.78733.79113.13222.59704.54555.00195.29954.78153.18933.37942.14871.09371.76821.7515

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 124.800 C1 C11 C12 114.437
H2 C1 H3 107.939 H2 C1 H4 107.939
H2 C1 C11 113.402 H3 C1 H4 106.348
H3 C1 C11 110.460 H4 C1 C11 110.460
C5 C9 H10 114.815 C5 C9 C11 128.366
H6 C5 H7 106.383 H6 C5 H8 107.698
H6 C5 C9 110.796 H7 C5 H8 107.698
H7 C5 C9 110.796 H8 C5 C9 113.170
C9 C11 C12 120.763 H10 C9 C11 116.819
C11 C12 H13 111.801 C11 C12 H14 110.999
C11 C12 H15 110.999 H13 C12 H14 108.215
H13 C12 H15 108.215 H14 C12 H15 106.403
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.247      
2 H 0.086      
3 H 0.087      
4 H 0.087      
5 C -0.248      
6 H 0.091      
7 H 0.091      
8 H 0.084      
9 C -0.153      
10 H 0.091      
11 C 0.023      
12 C -0.239      
13 H 0.082      
14 H 0.083      
15 H 0.083      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.201 0.054 0.000 0.208
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.348 -0.338 0.000
y -0.338 -32.097 0.000
z 0.000 0.000 -34.223
Traceless
 xyz
x 0.812 -0.338 0.000
y -0.338 1.189 0.000
z 0.000 0.000 -2.001
Polar
3z2-r2-4.001
x2-y2-0.251
xy-0.338
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.230 -0.968 0.000
y -0.968 11.554 0.000
z 0.000 0.000 6.800


<r2> (average value of r2) Å2
<r2> 149.578
(<r2>)1/2 12.230