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

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-156.954140
Energy at 298.15K-156.962691
HF Energy-156.623227
Nuclear repulsion energy119.965848
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 3175 3065 46.32      
2 A 3124 3015 47.83      
3 A 3118 3010 47.54      
4 A 3116 3008 31.63      
5 A 3065 2958 39.98      
6 A 3040 2935 27.16      
7 A 3018 2913 36.36      
8 A 2976 2873 46.83      
9 A 2967 2864 39.25      
10 A 1545 1491 4.42      
11 A 1539 1486 8.80      
12 A 1537 1484 8.58      
13 A 1522 1469 4.90      
14 A 1519 1467 6.51      
15 A 1461 1410 10.73      
16 A 1456 1405 4.33      
17 A 1435 1385 0.57      
18 A 1358 1311 2.96      
19 A 1294 1249 0.04      
20 A 1211 1169 0.34      
21 A 1149 1109 0.23      
22 A 1112 1074 0.81      
23 A 1033 997 1.11      
24 A 1017 981 1.32      
25 A 1006 971 7.63      
26 A 849 820 0.13      
27 A 802 774 2.03      
28 A 461 445 32.94      
29 A 426 411 0.76      
30 A 262 253 1.34      
31 A 227 219 0.04      
32 A 117 113 0.17      
33 A 57 55 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 25996.3 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 25094.2 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
0.85132 0.11704 0.11012

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.022 -0.048 -0.072
H2 2.096 -0.842 -0.839
H3 2.718 0.765 -0.346
H4 2.379 -0.486 0.885
C5 0.588 0.460 0.040
H6 0.421 1.482 0.408
C7 -0.583 -0.521 0.105
H8 -0.578 -1.055 1.083
H9 -0.443 -1.300 -0.672
C10 -1.969 0.173 -0.090
H11 -2.142 0.930 0.697
H12 -2.011 0.679 -1.072
H13 -2.789 -0.566 -0.044

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 H9 C10 H11 H12 H13
C11.10661.10421.11181.52632.26592.65373.01842.82913.99754.34644.21874.8394
H21.10661.79231.78352.17853.12442.85903.30052.58564.25674.84414.38634.9576
H31.10421.79231.78742.18602.52113.57064.02683.78924.73064.97304.78505.6734
H41.11181.78351.78742.19572.81693.06343.01823.32454.50504.74194.94625.2522
C51.52632.17852.18602.19571.09811.52852.17792.16022.57582.84662.83503.5303
H62.26593.12442.52112.81691.09812.26002.80863.10602.76962.63752.95783.8342
C72.65372.85903.57063.06341.52852.26001.11441.10941.56252.21052.20552.2119
H83.01843.30054.02683.01822.17792.80861.11441.77712.19582.55683.11522.5299
H92.82912.58563.78923.32452.16023.10601.10941.77712.19953.11992.55632.5373
C103.99754.25674.73064.50502.57582.76961.56252.19582.19951.10561.10461.1052
H114.34644.84414.97304.74192.84662.63752.21052.55683.11991.10561.79111.7906
H124.21874.38634.78504.94622.83502.95782.20553.11522.55631.10461.79111.7917
H134.83944.95765.67345.25223.53033.83422.21192.52992.53731.10521.79061.7917

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 118.486 C1 C5 C7 120.610
H2 C1 H3 108.334 H2 C1 H4 107.023
H2 C1 C5 110.659 H3 C1 H4 107.529
H3 C1 C5 111.400 H4 C1 C5 111.708
C5 C7 H8 109.999 C5 C7 H9 108.912
C5 C7 C10 112.880 H6 C5 C7 117.793
C7 C10 H11 110.721 C7 C10 H12 110.393
C7 C10 H13 110.856 H8 C7 H9 106.099
H8 C7 C10 109.078 H9 C7 C10 109.647
H11 C10 H12 108.261 H11 C10 H13 108.179
H12 C10 H13 108.340
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability