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

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-157.228276
Energy at 298.15K-157.236896
HF Energy-156.669703
Nuclear repulsion energy121.776251
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 QCISD/6-31G*
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 3182 3030 29.79      
2 A 3141 2992 33.00      
3 A 3136 2986 35.23      
4 A 3132 2983 24.12      
5 A 3079 2932 30.00      
6 A 3063 2917 26.01      
7 A 3047 2901 24.38      
8 A 3002 2858 36.54      
9 A 2975 2833 34.73      
10 A 1555 1481 3.46      
11 A 1548 1474 5.73      
12 A 1542 1469 3.98      
13 A 1533 1459 0.63      
14 A 1528 1455 5.96      
15 A 1474 1404 1.23      
16 A 1465 1395 4.04      
17 A 1452 1383 0.23      
18 A 1354 1290 6.27      
19 A 1309 1246 0.05      
20 A 1217 1159 0.40      
21 A 1167 1112 0.04      
22 A 1114 1061 1.00      
23 A 1065 1014 0.20      
24 A 1015 966 1.72      
25 A 1006 958 2.92      
26 A 872 830 0.20      
27 A 793 755 1.08      
28 A 440 419 3.31      
29 A 425 405 16.66      
30 A 266 254 1.20      
31 A 246 234 0.05      
32 A 132 126 0.05      
33 A 71 68 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 26170.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 24922.4 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 QCISD/6-31G*
ABC
0.87701 0.12112 0.11393

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.985 -0.047 -0.068
H2 2.072 -0.826 -0.839
H3 2.682 0.762 -0.321
H4 2.336 -0.497 0.878
C5 0.578 0.451 0.038
H6 0.412 1.472 0.384
C7 -0.572 -0.507 0.099
H8 -0.564 -1.048 1.066
H9 -0.436 -1.287 -0.668
C10 -1.934 0.168 -0.086
H11 -2.103 0.925 0.691
H12 -1.992 0.667 -1.061
H13 -2.751 -0.562 -0.027

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 H9 C10 H11 H12 H13
C11.09951.09681.10501.49642.23322.60382.96382.78553.92524.27024.16044.7645
H21.09951.77791.76782.15213.08762.82363.25942.55564.19574.77894.33484.8982
H31.09681.77791.77242.15732.48153.51823.96633.74704.66054.89404.73315.6002
H41.10501.76781.77242.16662.79733.01002.95693.26984.42724.66484.88235.1670
C51.49642.15212.15732.16661.09091.49822.14612.13222.53102.79982.80283.4805
H62.23323.08762.48152.79731.09092.22872.78693.07202.72482.59182.91703.7829
C72.60382.82363.51823.01001.49822.22871.10731.10211.53132.17852.17702.1835
H82.96383.25943.96632.95692.14612.78691.10731.75422.16362.53043.08232.4931
H92.78552.55563.74703.26982.13223.07201.10211.75422.16803.08542.52872.5094
C103.92524.19574.66054.42722.53102.72481.53132.16362.16801.09781.09701.0971
H114.27024.77894.89404.66482.79982.59182.17852.53043.08541.09781.77381.7741
H124.16044.33484.73314.88232.80282.91702.17703.08232.52871.09701.77381.7765
H134.76454.89825.60025.16703.48053.78292.18352.49312.50941.09711.77411.7765

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 118.501 C1 C5 C7 120.799
H2 C1 H3 108.100 H2 C1 H4 106.630
H2 C1 C5 111.080 H3 C1 H4 107.219
H3 C1 C5 111.659 H4 C1 C5 111.904
C5 C7 H8 110.003 C5 C7 H9 109.221
C5 C7 C10 113.321 H6 C5 C7 117.955
C7 C10 H11 110.838 C7 C10 H12 110.763
C7 C10 H13 111.274 H8 C7 H9 105.117
H8 C7 C10 109.102 H9 C7 C10 109.754
H11 C10 H12 107.840 H11 C10 H13 107.857
H12 C10 H13 108.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability