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

using model chemistry: CID/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-194.500649
Energy at 298.15K-194.510590
Nuclear repulsion energy173.728705
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 CID/3-21G
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 3226 3005 36.73      
2 A 3208 2989 25.29      
3 A 3196 2977 7.53      
4 A 3185 2967 14.76      
5 A 3117 2904 4.93      
6 A 3112 2899 47.29      
7 A 3105 2893 17.98      
8 A 1820 1695 0.31      
9 A 1621 1510 11.35      
10 A 1617 1507 3.12      
11 A 1607 1497 1.57      
12 A 1532 1427 3.33      
13 A 1519 1415 6.77      
14 A 1507 1404 4.08      
15 A 1470 1369 2.57      
16 A 1279 1192 3.91      
17 A 1184 1103 7.81      
18 A 1123 1046 5.23      
19 A 1015 945 1.17      
20 A 988 921 1.98      
21 A 773 720 1.66      
22 A 546 508 2.01      
23 A 399 372 0.34      
24 A 316 294 0.17      
25 A 3159 2943 59.15      
26 A 3158 2942 9.16      
27 A 3154 2938 0.73      
28 A 1616 1506 20.45      
29 A 1610 1500 0.95      
30 A 1597 1488 1.31      
31 A 1191 1110 0.93      
32 A 1152 1073 0.39      
33 A 1097 1022 2.39      
34 A 884 823 16.40      
35 A 463 431 4.10      
36 A 267 249 2.00      
37 A 184 172 0.99      
38 A 138 128 0.33      
39 A 100 93 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 31115.8 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 28987.5 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 CID/3-21G
ABC
0.26639 0.11609 0.08469

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.522 0.471 0.000
H2 -1.958 -0.526 0.000
H3 -1.884 1.006 0.883
H4 -1.884 1.006 -0.883
C5 0.297 -2.103 0.000
H6 0.681 -2.622 -0.883
H7 0.681 -2.622 0.883
H8 -0.789 -2.192 0.000
C9 0.754 -0.655 0.000
H10 1.833 -0.531 0.000
C11 0.000 0.444 0.000
C12 0.632 1.831 0.000
H13 1.722 1.766 0.000
H14 0.317 2.394 0.884
H15 0.317 2.394 -0.884

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.08861.09431.09433.15123.89843.89842.76242.53913.50151.52192.54713.49252.80292.8029
H21.08861.77001.77002.75133.48383.48382.03572.71513.79172.18543.50214.33573.80533.8053
H31.09431.77001.76663.89834.78114.44303.49403.24004.11832.15522.79123.78932.60153.1449
H41.09431.77001.76663.89834.44304.78113.49403.24004.11832.15522.79123.78933.14492.6015
C53.15122.75133.89833.89831.09391.09391.08911.51772.19832.56393.94774.12314.58224.5822
H63.89843.48384.78114.44301.09391.76531.76742.15692.54583.26264.53984.59585.33015.0288
H73.89843.48384.44304.78111.09391.76531.76742.15692.54583.26264.53984.59585.02885.3301
H82.76242.03573.49403.49401.08911.76741.76742.17763.10442.75204.26684.68774.79944.7994
C92.53912.71513.24003.24001.51772.15692.15692.17761.08681.33322.48932.60813.20453.2045
H103.50153.79174.11834.11832.19832.54582.54583.10441.08682.07662.64972.29993.41093.4109
C111.52192.18542.15522.15522.56393.26263.26262.75201.33322.07661.52402.17092.16372.1637
C122.54713.50212.79122.79123.94774.53984.53984.26682.48932.64971.52401.09161.09421.0942
H133.49254.33573.78933.78934.12314.59584.59584.68772.60812.29992.17091.09161.77451.7745
H142.80293.80532.60153.14494.58225.33015.02884.79943.20453.41092.16371.09421.77451.7676
H152.80293.80533.14492.60154.58225.02885.33014.79943.20453.41092.16371.09421.77451.7676

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 125.447 C1 C11 C12 113.490
H2 C1 H3 108.359 H2 C1 H4 108.359
H2 C1 C11 112.629 H3 C1 H4 107.650
H3 C1 C11 109.851 H4 C1 C11 109.851
C5 C9 H10 114.118 C5 C9 C11 128.032
H6 C5 H7 107.586 H6 C5 H8 108.116
H6 C5 C9 110.304 H7 C5 H8 108.116
H7 C5 C9 110.304 H8 C5 C9 112.264
C9 C11 C12 121.063 H10 C9 C11 117.849
C11 C12 H13 111.118 C11 C12 H14 110.387
C11 C12 H15 110.387 H13 C12 H14 108.553
H13 C12 H15 108.553 H14 C12 H15 107.748
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability