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: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-133.277702
Energy at 298.15K-133.281573
HF Energy-133.277702
Nuclear repulsion energy64.164736
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 mPW1PW91/6-31G(2df,p)
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' 3186 3041 5.62      
2 A' 3069 2930 6.40      
3 A' 3014 2877 17.02      
4 A' 1764 1684 1.66      
5 A' 1475 1408 9.63      
6 A' 1385 1322 3.58      
7 A' 1250 1193 1.54      
8 A' 1062 1014 10.46      
9 A' 923 882 3.41      
10 A' 427 407 17.51      
11 A" 3144 3002 6.93      
12 A" 1480 1413 8.43      
13 A" 1070 1021 0.12      
14 A" 750 716 8.72      
15 A" 195 186 1.49      

Unscaled Zero Point Vibrational Energy (zpe) 12096.0 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 11548.0 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 mPW1PW91/6-31G(2df,p)
ABC
1.90783 0.34868 0.31192

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.481 0.000
C2 -0.836 -0.771 0.000
N3 1.246 0.504 0.000
H4 -0.543 1.439 0.000
H5 -0.201 -1.656 0.000
H6 -1.481 -0.788 0.882
H7 -1.481 -0.788 -0.882

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7
C11.50541.24611.10082.14692.14082.1408
C21.50542.44082.22881.08951.09341.0934
N31.24612.44082.01872.59973.14393.1439
H41.10082.22882.01873.11382.57192.5719
H52.14691.08952.59973.11381.78121.7812
H62.14081.09343.14392.57191.78121.7645
H72.14081.09343.14392.57191.78121.7645

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 110.635 C1 C2 H6 109.913
C1 C2 H7 109.913 C2 C1 N3 124.753
C2 C1 H4 116.702 N3 C1 H4 118.544
H5 C2 H6 109.366 H5 C2 H7 109.366
H6 C2 H7 107.588
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.048      
2 C -0.494      
3 N -0.224      
4 H 0.153      
5 H 0.176      
6 H 0.170      
7 H 0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.735 -0.440 0.000 2.771
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.182 -1.248 0.000
y -1.248 -17.106 0.000
z 0.000 0.000 -18.455
Traceless
 xyz
x -3.401 -1.248 0.000
y -1.248 2.712 0.000
z 0.000 0.000 0.689
Polar
3z2-r21.378
x2-y2-4.076
xy-1.248
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.987 0.357 0.000
y 0.357 3.951 0.000
z 0.000 0.000 2.971


<r2> (average value of r2) Å2
<r2> 45.935
(<r2>)1/2 6.778