return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-154.967538
Energy at 298.15K-154.973968
HF Energy-154.644382
Nuclear repulsion energy108.769394
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 MP2/3-21G
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' 3290 3140 11.49      
2 A' 3192 3046 12.34      
3 A' 3186 3041 20.70      
4 A' 3164 3020 6.33      
5 A' 3145 3001 11.34      
6 A' 3063 2923 20.72      
7 A' 1605 1532 7.08      
8 A' 1582 1510 2.46      
9 A' 1525 1455 6.94      
10 A' 1493 1425 4.14      
11 A' 1420 1355 0.35      
12 A' 1343 1282 1.28      
13 A' 1171 1118 0.38      
14 A' 1146 1093 0.30      
15 A' 1063 1014 5.79      
16 A' 896 855 3.03      
17 A' 530 506 0.47      
18 A' 302 289 0.14      
19 A" 3114 2973 19.81      
20 A" 1583 1511 6.54      
21 A" 1104 1054 2.55      
22 A" 1038 990 29.85      
23 A" 803 766 62.15      
24 A" 765 730 0.00      
25 A" 565 539 5.16      
26 A" 228 217 2.13      
27 A" 144 138 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 21228.4 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 20262.5 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 MP2/3-21G
ABC
1.26192 0.13249 0.12265

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.379 -1.404 0.000
C2 0.158 -0.744 0.000
C3 0.000 0.631 0.000
C4 -1.342 1.331 0.000
H5 2.315 -0.855 0.000
H6 1.441 -2.486 0.000
H7 -0.747 -1.352 0.000
H8 0.887 1.263 0.000
H9 -2.157 0.600 0.000
H10 -1.454 1.972 0.885
H11 -1.454 1.972 -0.885

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11
C11.38752.45853.85801.08571.08342.12652.71234.06434.49524.4952
C21.38751.38452.56082.15952.16331.09062.13552.67723.28023.2802
C32.45851.38451.51342.75073.43422.11941.08912.15762.16692.1669
C43.85802.56081.51344.26024.72412.74852.22991.09581.09801.0980
H51.08572.15952.75074.26021.85043.10232.55404.70274.79374.7937
H61.08342.16333.43424.72411.85042.46493.78964.74045.38875.3887
H72.12651.09062.11942.74853.10232.46493.08382.40783.51143.5114
H82.71232.13551.08912.22992.55403.78963.08383.11592.60162.6016
H94.06432.67722.15761.09584.70274.74042.40783.11591.77751.7775
H104.49523.28022.16691.09804.79375.38873.51142.60161.77751.7698
H114.49523.28022.16691.09804.79375.38873.51142.60161.77751.7698

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 124.973 C1 C2 H7 117.713
C2 C1 H5 121.173 C2 C1 H6 121.734
C2 C3 C4 124.119 C2 C3 H8 118.896
C3 C2 H7 117.314 C3 C4 H9 110.546
C3 C4 H10 111.151 C3 C4 H11 111.151
C4 C3 H8 116.985 H5 C1 H6 117.092
H9 C4 H10 108.234 H9 C4 H11 108.234
H10 C4 H11 107.394
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability