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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at CBS-Q
 hartrees
Energy at 0K-157.425046
Energy at 298.15K-157.417824
Nuclear repulsion energy121.931294
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3302 3302 46.42      
2 A 3256 3256 51.46      
3 A 3251 3251 35.16      
4 A 3250 3250 57.18      
5 A 3209 3209 45.04      
6 A 3186 3186 16.14      
7 A 3184 3184 42.33      
8 A 3138 3138 54.22      
9 A 3120 3120 40.72      
10 A 1641 1641 2.24      
11 A 1634 1634 4.76      
12 A 1627 1627 2.77      
13 A 1619 1619 3.80      
14 A 1617 1617 1.35      
15 A 1558 1558 0.19      
16 A 1550 1550 2.48      
17 A 1530 1530 0.08      
18 A 1427 1427 9.57      
19 A 1391 1391 0.11      
20 A 1274 1274 0.43      
21 A 1195 1195 0.12      
22 A 1173 1173 1.47      
23 A 1095 1095 0.15      
24 A 1064 1064 0.53      
25 A 1051 1051 2.57      
26 A 898 898 0.26      
27 A 830 830 0.65      
28 A 482 482 14.32      
29 A 444 444 2.03      
30 A 275 275 0.81      
31 A 259 259 0.03      
32 A 145 145 0.08      
33 A 77 77 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 27374.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 27374.5 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 CBS-Q
See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.991 -0.050 -0.065
H2 2.084 -0.835 -0.815
H3 2.685 0.746 -0.325
H4 2.327 -0.476 0.885
C5 0.579 0.456 0.021
H6 0.425 1.454 0.410
C7 -0.575 -0.506 0.099
H8 -0.558 -1.027 1.063
H9 -0.447 -1.284 -0.654
C10 -1.938 0.166 -0.084
H11 -2.107 0.922 0.682
H12 -2.005 0.656 -1.053
H13 -2.746 -0.559 -0.017

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 H9 C10 H11 H12 H13
C11.08951.08781.09431.50212.22172.61072.95402.79503.93434.27734.17584.7643
H21.08951.76061.75452.15213.08042.83103.24812.57574.20874.78504.35884.9036
H31.08781.76061.75702.15372.47913.51753.94853.74684.66504.89994.74655.5941
H41.09431.75451.75702.16102.75003.00592.94253.27334.41984.65354.87835.1530
C51.50212.15212.15372.16101.08141.50442.14012.13032.53552.80532.80513.4769
H62.22173.08042.47912.75001.08142.22182.74713.06432.73592.60212.94653.7805
C72.61072.83103.51753.00591.50442.22181.09571.09111.53082.17432.17352.1753
H82.95403.24813.94852.94252.14012.74711.09571.74052.15432.51853.06642.4845
H92.79502.57573.74683.27332.13033.06431.09111.74052.15723.06782.52042.4938
C103.93434.20874.66504.41982.53552.73591.53082.15432.15721.08891.08821.0881
H114.27734.78504.89994.65352.80532.60212.17432.51853.06781.08891.75791.7580
H124.17584.35884.74654.87832.80512.94652.17353.06642.52041.08821.75791.7603
H134.76434.90365.59415.15303.47693.78052.17532.48452.49381.08811.75801.7603

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 117.697 C1 C5 C7 120.537
H2 C1 H3 107.924 H2 C1 H4 106.913
H2 C1 C5 111.285 H3 C1 H4 107.252
H3 C1 C5 111.521 H4 C1 C5 111.708
C5 C7 H8 109.792 C5 C7 H9 109.293
C5 C7 C10 113.303 H6 C5 C7 117.531
C7 C10 H11 111.072 C7 C10 H12 111.043
C7 C10 H13 111.193 H8 C7 H9 105.485
H8 C7 C10 109.091 H9 C7 C10 109.581
H11 C10 H12 107.697 H11 C10 H13 107.714
H12 C10 H13 107.964
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability