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All results from a given calculation for CH3CHCH2CH3 (2-Butyl radical)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-156.151098
Energy at 298.15K-156.159796
HF Energy-155.803939
Nuclear repulsion energy121.099926
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 MP2/3-21G*
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 3202 3046 26.30      
2 A 3164 3010 27.01      
3 A 3155 3002 27.25      
4 A 3147 2994 18.32      
5 A 3102 2951 23.31      
6 A 3085 2935 23.10      
7 A 3082 2932 11.66      
8 A 3032 2884 24.05      
9 A 3017 2870 22.55      
10 A 1607 1529 3.23      
11 A 1602 1524 6.09      
12 A 1597 1519 4.93      
13 A 1585 1507 6.91      
14 A 1579 1502 1.16      
15 A 1494 1422 1.02      
16 A 1492 1419 7.34      
17 A 1442 1372 1.80      
18 A 1388 1320 4.23      
19 A 1348 1282 0.00      
20 A 1227 1167 0.67      
21 A 1148 1092 0.51      
22 A 1123 1068 0.44      
23 A 1055 1003 4.38      
24 A 1045 994 3.23      
25 A 995 946 1.12      
26 A 851 809 0.31      
27 A 811 771 1.88      
28 A 452 430 18.42      
29 A 436 415 3.52      
30 A 273 260 1.46      
31 A 245 233 0.02      
32 A 139 132 0.04      
33 A 75 72 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 26495.4 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 25205.1 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 MP2/3-21G*
ABC
0.86092 0.11952 0.11252

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.000 -0.048 -0.078
H2 2.064 -0.821 -0.854
H3 2.688 0.763 -0.340
H4 2.355 -0.498 0.864
C5 0.580 0.458 0.046
H6 0.419 1.460 0.437
C7 -0.574 -0.517 0.114
H8 -0.579 -1.035 1.089
H9 -0.432 -1.295 -0.649
C10 -1.949 0.172 -0.098
H11 -2.114 0.936 0.670
H12 -1.980 0.657 -1.079
H13 -2.764 -0.558 -0.042

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 H9 C10 H11 H12 H13
C11.09731.09521.10221.51252.24472.62382.99802.79243.95594.29624.16394.7916
H21.09731.77841.77182.15643.09482.82703.28752.54934.20364.78254.31164.9033
H31.09521.77841.77462.16492.49773.53393.99363.75064.68164.91094.72735.6179
H41.10221.77181.77462.17452.78553.02302.99073.26974.46084.69704.88795.1984
C51.51252.15642.16492.17451.08761.51252.15842.14032.54992.80682.80363.4962
H62.24473.09482.49772.78551.08762.23612.76523.08132.74882.59792.94953.7993
C72.62382.82703.53393.02301.51252.23611.10371.09921.55322.18902.18582.1959
H82.99803.28753.99362.99072.15842.76521.10371.76392.17852.53303.08632.5065
H92.79242.54933.75063.26972.14033.08131.09921.76392.18143.08972.52732.5198
C103.95594.20364.68164.46082.54992.74881.55322.17852.18141.09561.09451.0953
H114.29624.78254.91094.69702.80682.59792.18902.53303.08971.09561.77681.7776
H124.16394.31164.72734.88792.80362.94952.18583.08632.52731.09451.77681.7792
H134.79164.90335.61795.19843.49623.79932.19592.50652.51981.09531.77761.7792

picture of 2-Butyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 118.472 C1 C5 C7 120.309
H2 C1 H3 108.416 H2 C1 H4 107.331
H2 C1 C5 110.424 H3 C1 H4 107.720
H3 C1 C5 111.225 H4 C1 C5 111.572
C5 C7 H8 110.198 C5 C7 H9 109.047
C5 C7 C10 112.556 H6 C5 C7 117.707
C7 C10 H11 110.276 C7 C10 H12 110.085
C7 C10 H13 110.830 H8 C7 H9 106.395
H8 C7 C10 108.984 H9 C7 C10 109.471
H11 C10 H12 108.449 H11 C10 H13 108.461
H12 C10 H13 108.678
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability