return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CH3CHN (methylmethaniminyl radical)

using model chemistry: B3LYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-133.305932
Energy at 298.15K-133.309783
HF Energy-133.305932
Nuclear repulsion energy63.845701
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 B3LYP/6-31G*
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' 3162 3036 9.21      
2 A' 3056 2934 8.64      
3 A' 2988 2870 23.11      
4 A' 1746 1677 1.11      
5 A' 1504 1444 8.79      
6 A' 1413 1357 2.36      
7 A' 1267 1217 1.27      
8 A' 1062 1020 10.03      
9 A' 917 880 2.38      
10 A' 431 414 16.92      
11 A" 3117 2993 12.17      
12 A" 1508 1449 8.94      
13 A" 1077 1034 0.10      
14 A" 747 718 9.09      
15 A" 186 179 1.27      

Unscaled Zero Point Vibrational Energy (zpe) 12090.5 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 11610.6 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 B3LYP/6-31G*
ABC
1.89499 0.34444 0.30830

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.484 0.000
C2 -0.839 -0.778 0.000
N3 1.251 0.511 0.000
H4 -0.551 1.441 0.000
H5 -0.202 -1.665 0.000
H6 -1.486 -0.797 0.885
H7 -1.486 -0.797 -0.885

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7
C11.51591.25171.10382.15862.15242.1524
C21.51592.45622.23751.09221.09631.0963
N31.25172.45622.02802.61663.16023.1602
H41.10382.23752.02803.12522.58182.5818
H52.15861.09222.61663.12521.78461.7846
H62.15241.09633.16022.58181.78461.7704
H72.15241.09633.16022.58181.78461.7704

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 110.671 C1 C2 H6 109.936
C1 C2 H7 109.936 C2 C1 N3 124.847
C2 C1 H4 116.438 N3 C1 H4 118.715
H5 C2 H6 109.268 H5 C2 H7 109.268
H6 C2 H7 107.704
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.084      
2 C -0.485      
3 N -0.291      
4 H 0.160      
5 H 0.183      
6 H 0.175      
7 H 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.728 -0.441 0.000 2.763
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.444 -1.239 0.000
y -1.239 -17.302 0.000
z 0.000 0.000 -18.618
Traceless
 xyz
x -3.484 -1.239 0.000
y -1.239 2.729 0.000
z 0.000 0.000 0.755
Polar
3z2-r21.510
x2-y2-4.142
xy-1.239
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.940 0.319 0.000
y 0.319 3.748 0.000
z 0.000 0.000 2.680


<r2> (average value of r2) Å2
<r2> 46.444
(<r2>)1/2 6.815