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 CH3NH3 (methyl ammonium radical)

using model chemistry: wB97X-D/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at wB97X-D/6-31G(2df,p)
 hartrees
Energy at 0K-96.292928
Energy at 298.15K 
HF Energy-96.292928
Nuclear repulsion energy 
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 wB97X-D/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 A1 3075 3075 49.58      
2 A1 2526 2526 82.41      
3 A1 1316 1316 117.31      
4 A1 1129 1129 13.15      
5 A1 842 842 26.70      
6 A2 289 289 0.00      
7 E 3178 3178 12.98      
7 E 3178 3178 12.99      
8 E 1537 1537 1758.62      
8 E 1537 1537 1757.35      
9 E 1467 1467 382.99      
9 E 1467 1467 382.68      
10 E 1213 1213 6.22      
10 E 1213 1213 6.19      
11 E 860 860 6.50      
11 E 860 860 6.51      
12 E 510i 510i 4144.54      
12 E 510i 510i 4147.92      

Unscaled Zero Point Vibrational Energy (zpe) 12331.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12331.8 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 wB97X-D/6-31G(2df,p)
ABC
2.59154 0.67281 0.67281

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.793
N2 0.000 0.000 0.710
H3 0.000 -1.039 -1.125
H4 -0.900 0.519 -1.125
H5 0.900 0.519 -1.125
H6 0.000 1.035 1.056
H7 -0.897 -0.518 1.056
H8 0.897 -0.518 1.056

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.50301.09071.09071.09072.11952.11952.1195
N21.50302.10852.10852.10851.09181.09181.0918
H31.09072.10851.79961.79963.01002.41522.4152
H41.09072.10851.79961.79962.41522.41523.0100
H51.09072.10851.79961.79962.41523.01002.4152
H62.11951.09183.01002.41522.41521.79331.7933
H72.11951.09182.41522.41523.01001.79331.7933
H82.11951.09182.41523.01002.41521.79331.7933

picture of methyl ammonium radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 108.499 C1 N2 H7 108.499
C1 N2 H8 108.499 N2 C1 H3 107.706
N2 C1 H4 107.706 N2 C1 H5 107.706
H3 C1 H4 111.177 H3 C1 H5 111.177
H4 C1 H5 111.177 H6 N2 H7 110.426
H6 N2 H8 110.426 H7 N2 H8 110.426
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.359      
2 N -0.118      
3 H 0.145      
4 H 0.145      
5 H 0.145      
6 H 0.014      
7 H 0.014      
8 H 0.014      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.036 1.036
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.729 0.000 0.000
y 0.000 -16.729 0.000
z 0.000 0.000 -16.508
Traceless
 xyz
x -0.110 0.000 0.000
y 0.000 -0.110 0.000
z 0.000 0.000 0.221
Polar
3z2-r20.441
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.533 0.000 0.000
y 0.000 8.529 0.000
z 0.000 0.000 5.338


<r2> (average value of r2) Å2
<r2> 31.302
(<r2>)1/2 5.595