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 CH3CHN (methylmethaniminyl radical)

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-133.010166
Energy at 298.15K-133.014119
HF Energy-132.526107
Nuclear repulsion energy64.797043
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/Def2TZVPP
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' 3218 3061 3.32      
2 A' 3098 2948 4.46      
3 A' 3055 2907 12.63      
4 A' 2141 2038 113.04      
5 A' 1494 1422 13.88      
6 A' 1399 1331 4.66      
7 A' 1271 1210 4.39      
8 A' 1079 1027 11.78      
9 A' 936 890 1.73      
10 A' 442 421 22.75      
11 A" 3185 3031 3.85      
12 A" 1501 1428 9.86      
13 A" 1141 1085 1.68      
14 A" 798 759 7.29      
15 A" 214 204 2.63      

Unscaled Zero Point Vibrational Energy (zpe) 12485.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 11880.2 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/Def2TZVPP
ABC
1.93775 0.35514 0.31782

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.484 0.000
C2 -0.814 -0.774 0.000
N3 1.212 0.504 0.000
H4 -0.527 1.440 0.000
H5 -0.166 -1.644 0.000
H6 -1.453 -0.791 0.881
H7 -1.453 -0.791 -0.881

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7
C11.49791.21191.09212.13392.12392.1239
C21.49792.39492.23251.08491.08801.0880
N31.21192.39491.97482.55153.09053.0905
H41.09212.23251.97483.10512.57132.5713
H52.13391.08492.55153.10511.77721.7772
H62.12391.08803.09052.57131.77721.7615
H72.12391.08803.09052.57131.77721.7615

picture of methylmethaniminyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.401 C1 C2 H6 109.413
C1 C2 H7 109.413 C2 C1 N3 123.867
C2 C1 H4 118.230 N3 C1 H4 117.903
H5 C2 H6 109.742 H5 C2 H7 109.742
H6 C2 H7 108.090
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability