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All results from a given calculation for CH3NH3 (methyl ammonium radical)

using model chemistry: PBE1PBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at PBE1PBE/3-21G*
 hartrees
Energy at 0K-95.670284
Energy at 298.15K 
HF Energy-95.670284
Nuclear repulsion energy46.015404
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 PBE1PBE/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 A1 3091 2967 30.94      
2 A1 2299 2207 121.02      
3 A1 1314 1261 182.34      
4 A1 1067 1024 1.08      
5 A1 703 675 5.17      
6 A2 253 242 0.00      
7 E 3195 3067 15.32      
7 E 3195 3067 15.32      
8 E 1524 1463 0.59      
8 E 1524 1463 0.59      
9 E 1359 1305 759.16      
9 E 1359 1305 759.31      
10 E 1154 1108 21.26      
10 E 1154 1108 21.27      
11 E 833 799 10.83      
11 E 833 799 10.83      
12 E 1258i 1207i 4949.29      
12 E 1258i 1207i 4950.44      

Unscaled Zero Point Vibrational Energy (zpe) 11171.3 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 10722.2 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 PBE1PBE/3-21G*
ABC
2.47225 0.64093 0.64093

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.818
N2 0.000 0.000 0.733
H3 0.000 -1.043 -1.138
H4 -0.904 0.522 -1.138
H5 0.904 0.522 -1.138
H6 0.000 1.080 1.064
H7 -0.935 -0.540 1.064
H8 0.935 -0.540 1.064

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.55121.09111.09111.09112.17042.17042.1704
N21.55122.14182.14182.14181.12991.12991.1299
H31.09112.14181.80701.80703.05902.44482.4448
H41.09112.14181.80701.80702.44482.44483.0590
H51.09112.14181.80701.80702.44483.05902.4448
H62.17041.12993.05902.44482.44481.87091.8709
H72.17041.12992.44482.44483.05901.87091.8709
H82.17041.12992.44483.05902.44481.87091.8709

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 107.054 C1 N2 H7 107.054
C1 N2 H8 107.054 N2 C1 H3 107.022
N2 C1 H4 107.022 N2 C1 H5 107.022
H3 C1 H4 111.805 H3 C1 H5 111.805
H4 C1 H5 111.805 H6 N2 H7 111.776
H6 N2 H8 111.776 H7 N2 H8 111.776
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.529      
2 N -0.518      
3 H 0.229      
4 H 0.229      
5 H 0.229      
6 H 0.120      
7 H 0.120      
8 H 0.120      


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 -0.983 0.983
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.057 0.000 0.000
y 0.000 -16.057 0.000
z 0.000 0.000 -16.365
Traceless
 xyz
x 0.154 0.000 0.000
y 0.000 0.154 0.000
z 0.000 0.000 -0.308
Polar
3z2-r2-0.616
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 6.925 0.000 0.000
y 0.000 6.927 0.000
z 0.000 0.000 4.755


<r2> (average value of r2) Å2
<r2> 31.917
(<r2>)1/2 5.649