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

using model chemistry: MP2=FULL/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=FULL/3-21G
 hartrees
Energy at 0K-156.157632
Energy at 298.15K-156.166342
HF Energy-155.803968
Nuclear repulsion energy121.123729
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=FULL/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 3203 3058 26.03      
2 A 3164 3021 26.88      
3 A 3156 3013 27.15      
4 A 3148 3005 18.28      
5 A 3103 2963 23.24      
6 A 3085 2946 22.93      
7 A 3082 2943 11.76      
8 A 3032 2895 23.97      
9 A 3018 2881 22.48      
10 A 1607 1534 3.25      
11 A 1602 1530 6.11      
12 A 1597 1525 4.96      
13 A 1584 1513 6.95      
14 A 1579 1508 1.17      
15 A 1495 1427 1.05      
16 A 1492 1424 7.39      
17 A 1443 1377 1.79      
18 A 1388 1325 4.19      
19 A 1348 1287 0.00      
20 A 1227 1172 0.67      
21 A 1148 1096 0.50      
22 A 1123 1072 0.44      
23 A 1055 1007 4.41      
24 A 1045 998 3.22      
25 A 995 950 1.12      
26 A 851 812 0.31      
27 A 811 774 1.88      
28 A 451 430 18.00      
29 A 436 417 4.02      
30 A 273 261 1.48      
31 A 245 234 0.02      
32 A 138 132 0.03      
33 A 75 72 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 26498.6 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 25300.9 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=FULL/3-21G
ABC
0.86136 0.11957 0.11257

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.000 -0.048 -0.078
H2 2.065 -0.820 -0.855
H3 2.688 0.763 -0.338
H4 2.353 -0.499 0.863
C5 0.580 0.458 0.046
H6 0.419 1.460 0.435
C7 -0.574 -0.517 0.114
H8 -0.578 -1.036 1.088
H9 -0.432 -1.294 -0.651
C10 -1.949 0.172 -0.098
H11 -2.114 0.935 0.671
H12 -1.979 0.658 -1.078
H13 -2.764 -0.558 -0.042

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 H9 C10 H11 H12 H13
C11.09711.09511.10201.51212.24452.62322.99702.79233.95514.29524.16334.7907
H21.09711.77811.77152.15613.09392.82723.28762.55024.20364.78224.31164.9034
H31.09511.77811.77432.16452.49673.53333.99243.75084.68094.90984.72725.6172
H41.10201.77151.77432.17402.78673.02162.98883.26864.45924.69534.88675.1966
C51.51212.15612.16452.17401.08741.51212.15802.14002.54932.80632.80293.4955
H62.24453.09392.49672.78671.08742.23582.76623.08052.74752.59722.94693.7982
C72.62322.82723.53333.02161.51212.23581.10361.09911.55292.18872.18552.1956
H82.99703.28763.99242.98882.15802.76621.10361.76362.17812.53253.08582.5061
H92.79232.55023.75083.26862.14003.08051.09911.76362.18113.08922.52702.5193
C103.95514.20364.68094.45922.54932.74751.55292.17812.18111.09541.09441.0952
H114.29524.78224.90984.69532.80632.59722.18872.53253.08921.09541.77661.7773
H124.16334.31164.72724.88672.80292.94692.18553.08582.52701.09441.77661.7789
H134.79074.90345.61725.19663.49553.79822.19562.50612.51931.09521.77731.7789

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 118.489 C1 C5 C7 120.313
H2 C1 H3 108.409 H2 C1 H4 107.321
H2 C1 C5 110.434 H3 C1 H4 107.718
H3 C1 C5 111.231 H4 C1 C5 111.574
C5 C7 H8 110.204 C5 C7 H9 109.058
C5 C7 C10 112.553 H6 C5 C7 117.730
C7 C10 H11 110.277 C7 C10 H12 110.085
C7 C10 H13 110.835 H8 C7 H9 106.389
H8 C7 C10 108.980 H9 C7 C10 109.467
H11 C10 H12 108.447 H11 C10 H13 108.459
H12 C10 H13 108.676
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability