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All results from a given calculation for CH3CHCHCH2 (methylallyl radical)

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-155.024848
Energy at 298.15K-155.031116
HF Energy-154.643511
Nuclear repulsion energy108.053005
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/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' 3214 3089 14.58      
2 A' 3123 3002 17.68      
3 A' 3120 2999 18.49      
4 A' 3102 2981 7.04      
5 A' 3077 2957 13.62      
6 A' 3004 2887 22.46      
7 A' 1579 1517 6.24      
8 A' 1550 1490 1.65      
9 A' 1505 1446 4.87      
10 A' 1473 1415 4.10      
11 A' 1391 1337 0.51      
12 A' 1300 1250 1.06      
13 A' 1177 1131 0.34      
14 A' 1127 1083 0.14      
15 A' 1041 1001 4.61      
16 A' 877 843 2.05      
17 A' 515 495 0.37      
18 A' 295 284 0.10      
19 A" 3048 2929 23.77      
20 A" 1560 1499 5.72      
21 A" 1080 1038 1.40      
22 A" 978 939 28.54      
23 A" 761 731 53.24      
24 A" 719 691 0.55      
25 A" 535 514 4.76      
26 A" 213 205 1.91      
27 A" 129 124 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 20745.4 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 19938.4 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/3-21G*
ABC
1.24291 0.13073 0.12099

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.389 -1.414 0.000
C2 0.158 -0.750 0.000
C3 0.000 0.639 0.000
C4 -1.351 1.339 0.000
H5 2.329 -0.860 0.000
H6 1.453 -2.500 0.000
H7 -0.751 -1.360 0.000
H8 0.890 1.274 0.000
H9 -2.168 0.602 0.000
H10 -1.465 1.980 0.889
H11 -1.465 1.980 -0.889

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11
C11.39892.47923.88421.09061.08822.14122.73414.08824.52334.5233
C21.39891.39882.57712.17402.17721.09472.15312.68983.29883.2988
C32.47921.39881.52142.77023.45972.13621.09342.16782.17612.1761
C43.88422.57711.52144.28714.75432.76502.24221.10011.10211.1021
H51.09062.17402.77024.28711.85903.12052.57434.72824.82264.8226
H61.08822.17723.45974.75431.85902.48193.81634.76785.42085.4208
H72.14121.09472.13622.76503.12052.48193.10422.41973.52993.5299
H82.73412.15311.09342.24222.57433.81633.10423.13092.61492.6149
H94.08822.68982.16781.10014.72824.76782.41973.13091.78441.7844
H104.52333.29882.17611.10214.82265.42083.52992.61491.78441.7778
H114.52333.29882.17611.10214.82265.42083.52992.61491.78441.7778

picture of methylallyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 124.788 C1 C2 H7 117.827
C2 C1 H5 121.188 C2 C1 H6 121.686
C2 C3 C4 123.845 C2 C3 H8 119.018
C3 C2 H7 117.385 C3 C4 H9 110.548
C3 C4 H10 111.084 C3 C4 H11 111.084
C4 C3 H8 117.137 H5 C1 H6 117.126
H9 C4 H10 108.245 H9 C4 H11 108.245
H10 C4 H11 107.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability