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

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-33.617184
Energy at 298.15K-33.626679
HF Energy-33.166181
Nuclear repulsion energy96.365613
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 MP2/CEP-121G
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 3096 3022 59.76      
2 A 3083 3009 61.63      
3 A 3070 2996 15.18      
4 A 3065 2992 18.05      
5 A 3045 2972 38.50      
6 A 3037 2964 68.53      
7 A 3033 2960 11.20      
8 A 2962 2891 30.38      
9 A 2957 2886 61.18      
10 A 2948 2877 44.57      
11 A 1680 1640 0.75      
12 A 1533 1496 12.70      
13 A 1530 1493 1.45      
14 A 1522 1486 3.66      
15 A 1507 1471 19.11      
16 A 1502 1466 1.79      
17 A 1491 1455 1.98      
18 A 1464 1429 2.03      
19 A 1455 1420 6.05      
20 A 1443 1409 5.87      
21 A 1391 1358 2.43      
22 A 1245 1215 3.68      
23 A 1142 1115 6.47      
24 A 1121 1094 1.24      
25 A 1078 1052 3.04      
26 A 1067 1041 1.22      
27 A 1015 991 2.30      
28 A 982 959 0.61      
29 A 967 944 1.88      
30 A 770 751 20.81      
31 A 750 732 1.12      
32 A 514 502 1.40      
33 A 416 406 3.67      
34 A 376 367 0.15      
35 A 292 285 0.10      
36 A 245 239 2.21      
37 A 164 160 1.20      
38 A 76 74 0.28      
39 A 60 59 0.22      

Unscaled Zero Point Vibrational Energy (zpe) 29546.5 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 28837.4 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 MP2/CEP-121G
ABC
0.25754 0.11247 0.08194

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.632 1.490 0.001
H2 0.327 2.021 0.093
H3 -1.126 1.824 -0.931
H4 -1.277 1.801 0.843
C5 2.155 -0.081 -0.001
H6 2.658 -0.235 0.971
H7 2.780 -0.558 -0.777
H8 2.134 1.000 -0.207
C9 0.748 -0.698 0.001
H10 0.724 -1.797 0.011
C11 -0.462 -0.040 0.003
C12 -1.783 -0.832 -0.002
H13 -1.593 -1.918 -0.019
H14 -2.395 -0.572 -0.886
H15 -2.386 -0.597 0.895

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.10011.10621.10573.19913.83934.05462.81632.58683.55621.53962.59233.54172.85402.8700
H21.10011.78851.78432.78763.36093.66442.09702.75333.84022.20923.55074.38443.88483.8555
H31.10621.78851.78063.90644.70934.57813.43953.27764.17482.18832.89023.88062.71163.2844
H41.10571.78431.78064.00384.43194.96443.65733.32454.20032.18162.81143.83093.14152.6429
C53.19912.78763.90644.00381.10561.10431.10101.53612.23402.61704.00924.17414.66064.6575
H63.83933.36094.70934.43191.10561.78151.78582.19162.66453.27244.58564.67815.39365.0578
H74.05463.66444.57814.96441.10431.78151.78072.18012.52593.37414.63664.64195.17575.4301
H82.81632.09703.43953.65731.10101.78581.78072.20173.14002.80424.32954.73764.84144.9193
C92.58682.75333.27763.32451.53612.19162.18012.20171.09961.37712.53492.64023.26783.2609
H103.55623.84024.17484.20032.23402.66452.52593.14001.09962.12022.68712.32103.46933.4494
C111.53962.20922.18832.18162.61703.27243.37412.80421.37712.12021.54082.19292.19282.1935
C122.59233.55072.89022.81144.00924.58564.63664.32952.53492.68711.54081.10281.10611.1061
H133.54174.38443.88063.83094.17414.67814.64194.73762.64022.32102.19291.10281.79121.7916
H142.85403.88482.71163.14154.66065.39365.17574.84143.26783.46932.19281.10611.79121.7815
H152.87003.85553.28442.64294.65755.05785.43014.91933.26093.44942.19351.10611.79161.7815

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 124.874 C1 C11 C12 114.607
H2 C1 H3 108.321 H2 C1 H4 107.984
H2 C1 C11 112.564 H3 C1 H4 107.222
H3 C1 C11 110.531 H4 C1 C11 110.037
C5 C9 H10 114.892 C5 C9 C11 127.790
H6 C5 H7 107.445 H6 C5 H8 108.055
H6 C5 C9 111.072 H7 C5 H8 107.695
H7 C5 C9 110.236 H8 C5 C9 112.155
C9 C11 C12 120.517 H10 C9 C11 117.315
C11 C12 H13 111.011 C11 C12 H14 110.800
C11 C12 H15 110.857 H13 C12 H14 108.364
H13 C12 H15 108.405 H14 C12 H15 107.276
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability