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: PBEPBEultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-96.279170
Energy at 298.15K-96.286246
HF Energy-96.279170
Nuclear repulsion energy47.336691
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 PBEPBEultrafine/aug-cc-pVTZ
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 2994 2961 94.93      
2 A1 2865 2833 43.07      
3 A1 1341 1326 7.47      
4 A1 1290 1276 715.68      
5 A1 901 891 67.67      
6 A2 265 262 0.00      
7 E 3088 3053 1.58      
7 E 3088 3053 1.58      
8 E 2722 2691 2805.30      
8 E 2722 2691 2805.25      
9 E 1431 1415 24.80      
9 E 1431 1415 24.80      
10 E 1401 1385 78.00      
10 E 1401 1385 77.99      
11 E 1195 1182 3.62      
11 E 1195 1182 3.61      
12 E 855 846 86.13      
12 E 855 846 86.15      

Unscaled Zero Point Vibrational Energy (zpe) 15520.2 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 15346.4 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 PBEPBEultrafine/aug-cc-pVTZ
ABC
2.71447 0.66699 0.66699

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.800
N2 0.000 0.000 0.708
H3 0.000 -1.041 -1.138
H4 -0.902 0.521 -1.138
H5 0.902 0.521 -1.138
H6 0.000 0.985 1.086
H7 -0.853 -0.492 1.086
H8 0.853 -0.492 1.086

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.50741.09481.09481.09482.12752.12752.1275
N21.50742.11902.11902.11901.05501.05501.0550
H31.09482.11901.80351.80353.00852.44442.4444
H41.09482.11901.80351.80352.44442.44443.0085
H51.09482.11901.80351.80352.44443.00852.4444
H62.12751.05503.00852.44442.44441.70571.7057
H72.12751.05502.44442.44443.00851.70571.7057
H82.12751.05502.44443.00852.44441.70571.7057

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 111.023 C1 N2 H7 111.023
C1 N2 H8 111.023 N2 C1 H3 107.990
N2 C1 H4 107.990 N2 C1 H5 107.990
H3 C1 H4 110.911 H3 C1 H5 110.911
H4 C1 H5 110.911 H6 N2 H7 107.876
H6 N2 H8 107.876 H7 N2 H8 107.876
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.405      
2 N 0.040      
3 H 0.255      
4 H 0.255      
5 H 0.255      
6 H -0.133      
7 H -0.133      
8 H -0.133      


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 -2.356 2.356
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.011 0.000 0.000
y 0.000 -24.011 0.000
z 0.000 0.000 -22.139
Traceless
 xyz
x -0.936 0.000 0.000
y 0.000 -0.936 0.000
z 0.000 0.000 1.872
Polar
3z2-r23.744
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 45.071 0.000 0.000
y 0.000 45.069 -0.006
z 0.000 -0.006 27.650


<r2> (average value of r2) Å2
<r2> 35.536
(<r2>)1/2 5.961