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: HSEh1PBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at HSEh1PBE/6-31G
 hartrees
Energy at 0K-96.185206
Energy at 298.15K-96.192046
HF Energy-96.185206
Nuclear repulsion energy46.766141
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 HSEh1PBE/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 A1 3097 2963 48.35      
2 A1 2511 2402 85.14      
3 A1 1364 1304 138.11      
4 A1 1162 1112 28.12      
5 A1 835 798 8.56      
6 A2 257 246 0.00      
7 E 3209 3069 16.08      
7 E 3209 3069 16.09      
8 E 1621 1551 2675.03      
8 E 1621 1551 2676.07      
9 E 1513 1447 101.59      
9 E 1513 1447 101.53      
10 E 1227 1174 0.21      
10 E 1227 1174 0.21      
11 E 907 868 382.79      
11 E 907 868 382.58      
12 E 761 728 1933.71      
12 E 761 728 1934.42      

Unscaled Zero Point Vibrational Energy (zpe) 13849.7 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 13248.6 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 HSEh1PBE/6-31G
ABC
2.60018 0.65794 0.65794

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.805
N2 0.000 0.000 0.716
H3 0.000 -1.038 -1.138
H4 -0.899 0.519 -1.138
H5 0.899 0.519 -1.138
H6 0.000 1.033 1.076
H7 -0.894 -0.516 1.076
H8 0.894 -0.516 1.076

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.52131.09051.09051.09052.14592.14592.1459
N21.52132.12552.12552.12551.09351.09351.0935
H31.09052.12551.79841.79843.03202.44472.4447
H41.09052.12551.79841.79842.44472.44473.0320
H51.09052.12551.79841.79842.44473.03202.4447
H62.14591.09353.03202.44472.44471.78851.7885
H72.14591.09352.44472.44473.03201.78851.7885
H82.14591.09352.44473.03202.44471.78851.7885

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 109.213 C1 N2 H7 109.213
C1 N2 H8 109.213 N2 C1 H3 107.800
N2 C1 H4 107.800 N2 C1 H5 107.800
H3 C1 H4 111.089 H3 C1 H5 111.089
H4 C1 H5 111.089 H6 N2 H7 109.728
H6 N2 H8 109.728 H7 N2 H8 109.728
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.372      
2 N -0.448      
3 H 0.178      
4 H 0.178      
5 H 0.178      
6 H 0.095      
7 H 0.095      
8 H 0.095      


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 -1.059 1.059
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.863 0.000 0.000
y 0.000 -16.863 0.000
z 0.000 0.000 -16.627
Traceless
 xyz
x -0.118 0.000 0.000
y 0.000 -0.118 0.000
z 0.000 0.000 0.236
Polar
3z2-r20.472
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 8.075 0.000 0.000
y 0.000 8.073 0.000
z 0.000 0.000 5.224


<r2> (average value of r2) Å2
<r2> 31.758
(<r2>)1/2 5.635