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

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-157.288241
Energy at 298.15K-157.296782
HF Energy-156.697382
Nuclear repulsion energy121.696003
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/6-311G*
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 3156 3022 31.25      
2 A 3112 2980 35.50      
3 A 3107 2975 12.07      
4 A 3107 2975 52.46      
5 A 3050 2920 32.30      
6 A 3035 2906 28.33      
7 A 3024 2895 25.45      
8 A 2974 2847 42.00      
9 A 2954 2828 38.26      
10 A 1534 1469 5.12      
11 A 1528 1463 8.29      
12 A 1522 1457 6.57      
13 A 1511 1447 1.18      
14 A 1507 1443 8.11      
15 A 1458 1396 2.62      
16 A 1447 1386 6.95      
17 A 1435 1374 0.37      
18 A 1337 1280 3.87      
19 A 1298 1242 0.08      
20 A 1203 1151 0.31      
21 A 1154 1104 0.04      
22 A 1099 1052 1.10      
23 A 1055 1010 0.35      
24 A 1002 960 2.41      
25 A 993 951 2.13      
26 A 863 826 0.22      
27 A 779 746 0.93      
28 A 435 416 0.33      
29 A 392 375 23.47      
30 A 260 249 1.66      
31 A 241 230 0.23      
32 A 124 119 0.16      
33 A 63 60 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 25879.8 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 24777.3 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/6-311G*
ABC
0.87955 0.12084 0.11357

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.988 -0.047 -0.062
H2 2.089 -0.807 -0.848
H3 2.693 0.764 -0.280
H4 2.317 -0.523 0.879
C5 0.579 0.453 0.031
H6 0.407 1.482 0.350
C7 -0.572 -0.508 0.090
H8 -0.553 -1.058 1.050
H9 -0.440 -1.279 -0.685
C10 -1.938 0.167 -0.077
H11 -2.106 0.912 0.711
H12 -2.003 0.680 -1.044
H13 -2.752 -0.565 -0.025

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 H9 C10 H11 H12 H13
C11.09901.09571.10451.49842.23732.60582.95242.79383.93194.27534.17404.7692
H21.09901.77651.76572.15503.08312.83773.26322.57824.21444.79444.35854.9172
H31.09571.77651.77162.15952.47733.52313.95243.76234.67354.90244.75845.6110
H41.10451.76571.77162.16612.81862.99482.92433.25904.41504.65264.87915.1497
C51.49842.15502.15952.16611.09071.50012.14492.13372.53512.80712.80583.4838
H62.23733.08312.47732.81861.09072.23262.80393.06822.72232.60242.89723.7835
C72.60582.83773.52312.99481.50012.23261.10691.10161.53242.18012.17792.1843
H82.95243.26323.95242.92432.14492.80391.10691.75302.16522.53073.08342.4975
H92.79382.57823.76233.25902.13373.06821.10161.75302.16903.08612.53202.5085
C103.93194.21444.67354.41502.53512.72231.53242.16522.16901.09721.09651.0964
H114.27534.79444.90244.65262.80712.60242.18012.53073.08611.09721.77301.7721
H124.17404.35854.75844.87912.80582.89722.17793.08342.53201.09651.77301.7748
H134.76924.91725.61105.14973.48383.78352.18432.49752.50851.09641.77211.7748

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 118.724 C1 C5 C7 120.700
H2 C1 H3 108.081 H2 C1 H4 106.515
H2 C1 C5 111.204 H3 C1 H4 107.258
H3 C1 C5 111.768 H4 C1 C5 111.757
C5 C7 H8 109.808 C5 C7 H9 109.234
C5 C7 C10 113.431 H6 C5 C7 118.172
C7 C10 H11 110.919 C7 C10 H12 110.794
C7 C10 H13 111.303 H8 C7 H9 105.071
H8 C7 C10 109.181 H9 C7 C10 109.781
H11 C10 H12 107.849 H11 C10 H13 107.773
H12 C10 H13 108.061
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability