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: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-196.575916
Energy at 298.15K-196.585704
HF Energy-196.575916
Nuclear repulsion energy174.155016
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 TPSSh/6-31G(2df,p)
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' 3129 3019 67.09      
2 A' 3123 3013 22.15      
3 A' 3110 3001 6.05      
4 A' 3108 2999 18.42      
5 A' 3016 2910 9.01      
6 A' 3013 2908 84.82      
7 A' 3007 2902 27.85      
8 A' 1742 1681 1.16      
9 A' 1510 1457 7.81      
10 A' 1507 1455 0.67      
11 A' 1493 1440 0.96      
12 A' 1426 1376 0.44      
13 A' 1415 1366 0.13      
14 A' 1411 1361 3.76      
15 A' 1369 1321 4.83      
16 A' 1234 1191 5.30      
17 A' 1131 1092 9.84      
18 A' 1066 1028 4.73      
19 A' 964 931 2.10      
20 A' 954 921 1.63      
21 A' 769 742 1.41      
22 A' 516 498 2.12      
23 A' 364 351 0.33      
24 A' 288 278 0.31      
25 A" 3059 2952 35.90      
26 A" 3058 2951 38.17      
27 A" 3055 2948 10.25      
28 A" 1501 1448 12.76      
29 A" 1493 1441 0.79      
30 A" 1482 1430 0.35      
31 A" 1102 1063 0.00      
32 A" 1059 1022 1.26      
33 A" 1019 983 1.89      
34 A" 829 800 8.75      
35 A" 448 432 1.72      
36 A" 260 251 1.34      
37 A" 188 181 0.96      
38 A" 150 145 0.04      
39 A" 130 125 0.60      

Unscaled Zero Point Vibrational Energy (zpe) 29747.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 28706.0 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 TPSSh/6-31G(2df,p)
ABC
0.26770 0.11701 0.08527

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.507 0.488 0.000
H2 -1.962 -0.505 0.000
H3 -1.879 1.030 0.879
H4 -1.879 1.030 -0.879
C5 0.270 -2.093 0.000
H6 0.651 -2.628 -0.879
H7 0.651 -2.628 0.879
H8 -0.819 -2.186 0.000
C9 0.738 -0.667 0.000
H10 1.822 -0.547 0.000
C11 0.000 0.451 0.000
C12 0.658 1.808 0.000
H13 1.749 1.730 0.000
H14 0.357 2.394 0.879
H15 0.357 2.394 -0.879

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.09201.09821.09823.13313.89093.89092.76102.52453.48611.50732.53593.48452.80702.8070
H21.09201.77101.77102.73863.47973.47972.03262.70463.78412.18213.49494.33143.81463.8146
H31.09821.77101.75853.89184.78334.44833.49893.24124.11862.15432.79593.79832.61923.1549
H41.09821.77101.75853.89184.44834.78333.49893.24124.11862.15432.79593.79833.15492.6192
C53.13312.73863.89183.89181.09791.09791.09281.50112.19132.55813.92094.09904.57314.5731
H63.89093.47974.78334.44831.09791.75881.76952.15102.54483.26764.52294.57915.32915.0304
H73.89093.47974.44834.78331.09791.75881.76952.15102.54483.26764.52294.57915.03045.3291
H82.76102.03263.49893.49891.09281.76951.76952.17573.10892.76144.25914.68294.80974.8097
C92.52452.70463.24123.24121.50112.15102.15102.17571.09071.33952.47682.60113.20743.2074
H103.48613.78414.11864.11862.19132.54482.54483.10891.09072.07752.62742.27773.40123.4012
C111.50732.18212.15432.15432.55813.26763.26762.76141.33952.07751.50872.16652.16242.1624
C122.53593.49492.79592.79593.92094.52294.52294.25912.47682.62741.50871.09371.09851.0985
H133.48454.33143.79833.79834.09904.57914.57914.68292.60112.27772.16651.09371.77551.7755
H142.80703.81462.61923.15494.57315.32915.03044.80973.20743.40122.16241.09851.77551.7590
H152.80703.81463.15492.61924.57315.03045.32914.80973.20743.40122.16241.09851.77551.7590

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 124.843 C1 C11 C12 114.450
H2 C1 H3 107.920 H2 C1 H4 107.920
H2 C1 C11 113.207 H3 C1 H4 106.377
H3 C1 C11 110.567 H4 C1 C11 110.567
C5 C9 H10 114.513 C5 C9 C11 128.374
H6 C5 H7 106.457 H6 C5 H8 107.753
H6 C5 C9 110.756 H7 C5 H8 107.753
H7 C5 C9 110.756 H8 C5 C9 113.079
C9 C11 C12 120.708 H10 C9 C11 117.113
C11 C12 H13 111.722 C11 C12 H14 111.092
C11 C12 H15 111.092 H13 C12 H14 108.170
H13 C12 H15 108.170 H14 C12 H15 106.380
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability