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

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-195.523751
Energy at 298.15K-195.533309
HF Energy-195.084734
Nuclear repulsion energy171.240570
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/SDD
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 3148 3038 65.38      
2 A 3135 3026 45.31      
3 A 3124 3015 8.76      
4 A 3116 3008 23.00      
5 A 3015 2911 29.89      
6 A 3008 2904 52.21      
7 A 3002 2897 39.68      
8 A 1702 1642 1.13      
9 A 1545 1492 11.54      
10 A 1542 1489 8.67      
11 A 1532 1479 2.93      
12 A 1472 1420 4.99      
13 A 1460 1409 10.48      
14 A 1450 1400 6.94      
15 A 1403 1354 1.84      
16 A 1252 1208 5.02      
17 A 1151 1111 8.83      
18 A 1089 1051 6.28      
19 A 990 956 0.91      
20 A 974 940 2.20      
21 A 754 728 1.47      
22 A 521 503 1.82      
23 A 382 369 0.28      
24 A 297 286 0.13      
25 A 3093 2986 40.18      
26 A 3087 2980 63.11      
27 A 3084 2977 0.40      
28 A 1533 1480 25.77      
29 A 1523 1470 0.02      
30 A 1514 1462 2.55      
31 A 1135 1096 0.16      
32 A 1089 1051 0.44      
33 A 1041 1005 3.03      
34 A 813 785 22.06      
35 A 436 421 4.27      
36 A 252 243 2.59      
37 A 168 162 1.69      
38 A 80 77 0.33      
39 A 77 74 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 29992.7 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 28951.9 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/SDD
ABC
0.25909 0.11257 0.08215

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.535 0.502 0.000
H2 -1.991 -0.500 0.000
H3 -1.901 1.047 0.892
H4 -1.901 1.047 -0.892
C5 0.271 -2.139 0.000
H6 0.650 -2.673 -0.892
H7 0.650 -2.673 0.892
H8 -0.829 -2.215 0.000
C9 0.756 -0.685 0.000
H10 1.850 -0.563 0.000
C11 0.000 0.461 0.000
C12 0.670 1.846 0.000
H13 1.770 1.758 0.000
H14 0.366 2.427 0.892
H15 0.366 2.427 -0.892

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.10131.10721.10723.19923.95593.95592.80712.58073.54841.53562.58213.53622.84892.8489
H21.10131.78821.78822.79273.53373.53372.07112.75353.84102.21113.54764.38753.86303.8630
H31.10721.78821.78343.95734.85024.51053.54733.29494.17802.17992.83593.84462.65433.1980
H41.10721.78821.78343.95734.51054.85023.54733.29494.17802.17992.83593.84463.19802.6543
C53.19922.79273.95733.95731.10631.10631.10211.53272.23022.61424.00474.17564.65334.6533
H63.95593.53374.85024.51051.10631.78311.78602.18162.58573.32304.60644.65735.41085.1084
H73.95593.53374.51054.85021.10631.78311.78602.18162.58573.32304.60644.65735.10845.4108
H82.80712.07113.54733.54731.10211.78601.78602.20283.14632.80154.32844.74774.87554.8755
C92.58072.75353.29493.29491.53272.18162.18162.20281.09991.37342.53252.64543.26103.2610
H103.54843.84104.17804.17802.23022.58572.58573.14631.09992.11452.68302.32323.45563.4556
C111.53562.21112.17992.17992.61423.32303.32302.80151.37342.11451.53812.19462.18962.1896
C122.58213.54762.83592.83594.00474.60644.60644.32842.53252.68301.53811.10431.10711.1071
H133.53624.38753.84463.84464.17564.65734.65734.74772.64542.32322.19461.10431.79321.7932
H142.84893.86302.65433.19804.65335.41085.10844.87553.26103.45562.18961.10711.79321.7841
H152.84893.86303.19802.65434.65335.10845.41084.87553.26103.45562.18961.10711.79321.7841

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 124.934 C1 C11 C12 114.291
H2 C1 H3 108.127 H2 C1 H4 108.127
H2 C1 C11 112.933 H3 C1 H4 107.292
H3 C1 C11 110.087 H4 C1 C11 110.087
C5 C9 H10 114.808 C5 C9 C11 128.114
H6 C5 H7 107.389 H6 C5 H8 107.945
H6 C5 C9 110.478 H7 C5 H8 107.945
H7 C5 C9 110.478 H8 C5 C9 112.424
C9 C11 C12 120.774 H10 C9 C11 117.078
C11 C12 H13 111.252 C11 C12 H14 110.682
C11 C12 H15 110.682 H13 C12 H14 108.366
H13 C12 H15 108.366 H14 C12 H15 107.363
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability