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All results from a given calculation for C5H11 (2-Methylbut-2-yl radical)

using model chemistry: MP2/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-34.397087
Energy at 298.15K-34.407987
HF Energy-33.800383
Nuclear repulsion energy103.323517
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-31G*
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 3189 3027 42.92      
2 A 3181 3020 18.59      
3 A 3179 3018 76.76      
4 A 3175 3014 12.23      
5 A 3136 2977 36.31      
6 A 3129 2971 31.55      
7 A 3119 2961 22.01      
8 A 3085 2929 30.31      
9 A 3034 2880 44.89      
10 A 3031 2878 35.92      
11 A 3020 2867 40.42      
12 A 1539 1461 0.96      
13 A 1527 1449 7.86      
14 A 1520 1444 3.76      
15 A 1518 1441 22.85      
16 A 1510 1434 1.54      
17 A 1503 1427 4.54      
18 A 1497 1421 0.69      
19 A 1446 1372 7.12      
20 A 1444 1371 0.35      
21 A 1437 1364 10.10      
22 A 1406 1335 0.80      
23 A 1337 1269 1.61      
24 A 1301 1235 4.91      
25 A 1267 1203 7.07      
26 A 1143 1085 0.44      
27 A 1098 1043 0.16      
28 A 1067 1013 4.92      
29 A 1009 958 2.15      
30 A 1001 951 1.68      
31 A 963 914 0.61      
32 A 950 902 0.06      
33 A 777 738 1.35      
34 A 762 723 2.26      
35 A 450 428 0.68      
36 A 376 357 0.04      
37 A 311 295 4.24      
38 A 287 273 0.17      
39 A 223 211 1.21      
40 A 149 142 0.01      
41 A 139 132 0.04      
42 A 79 75 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 32656.0 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 31003.7 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-31G*
ABC
0.24355 0.11280 0.08330

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.577 1.496 0.068
H2 0.276 2.030 -0.387
H3 -1.508 1.920 -0.347
H4 -0.563 1.721 1.158
C5 2.075 -0.044 -0.143
H6 2.203 0.898 0.418
H7 2.937 -0.695 0.092
H8 2.103 0.191 -1.222
C9 0.750 -0.752 0.228
H10 0.730 -1.754 -0.243
H11 0.730 -0.928 1.328
C12 -0.509 -0.002 -0.182
C13 -1.813 -0.773 -0.081
H14 -1.704 -1.798 -0.480
H15 -2.142 -0.864 0.978
H16 -2.624 -0.266 -0.634

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 H11 C12 C13 H14 H15 H16
C11.10401.10481.11283.07402.86454.14053.24842.61523.51643.02821.51982.58863.52442.97472.7908
H21.10401.78781.78462.75662.37533.83862.72412.88823.81373.44912.18713.50934.31054.01063.7066
H31.10481.78781.78854.09163.92465.17584.09883.54554.30313.99102.17222.72353.72543.14782.4706
H41.11281.78461.78853.43092.97924.38443.88832.95093.96382.95332.18363.05324.04623.03513.3778
C53.07402.75664.09163.43091.10391.10501.10471.54772.17842.18072.58483.95714.18034.44084.7303
H62.86452.37533.92462.97921.10391.78391.78902.20673.10502.51662.91934.37874.83114.72245.0755
H74.14053.83865.17584.38441.10501.78391.79072.19152.47082.53973.52524.75394.80435.15865.6244
H83.24842.72414.09883.88831.10471.78901.79072.19602.57463.10492.81804.19204.35914.89704.7856
C92.61522.88823.54552.95091.54772.20672.19152.19601.10711.11411.52192.58222.76022.99053.5164
H103.51643.81374.30313.96382.17843.10502.47082.57461.10711.77412.14672.73042.44573.24513.6900
H113.02823.44913.99102.95332.18072.51662.53973.10491.11411.77412.16182.91153.15422.89443.9419
C121.51982.18712.17222.18362.58482.91933.52522.81801.52192.14672.16181.51932.17832.18172.1792
C132.58863.50932.72353.05323.95714.37874.75394.19202.58222.73042.91151.51931.10511.11251.1052
H143.52444.31053.72544.04624.18034.83114.80434.35912.76022.44573.15422.17831.10511.78611.7939
H152.97474.01063.14783.03514.44084.72245.15864.89702.99053.24512.89442.18171.11251.78611.7861
H162.79083.70662.47063.37784.73035.07555.62444.78563.51643.69003.94192.17921.10521.79391.7861

picture of 2-Methylbut-2-yl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C12 C9 118.581 C1 C12 C13 116.810
H2 C1 H3 108.080 H2 C1 H4 107.231
H2 C1 C12 111.959 H3 C1 H4 107.515
H3 C1 C12 110.718 H4 C1 C12 111.146
C5 C9 H10 109.156 C5 C9 H11 108.937
C5 C9 C12 114.712 H6 C5 H7 107.730
H6 C5 H8 108.202 H6 C5 C9 111.561
H7 C5 H8 108.271 H7 C5 C9 110.292
H8 C5 C9 110.667 C9 C12 C13 116.221
H10 C9 H11 106.015 H10 C9 C12 108.448
H11 C9 C12 109.217 C12 C13 H14 111.217
C12 C13 H15 111.045 C12 C13 H16 111.288
H14 C13 H15 107.303 H14 C13 H16 108.510
H15 C13 H16 107.299
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability