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: B3LYP/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at B3LYP/cc-pVQZ
 hartrees
Energy at 0K-96.411382
Energy at 298.15K-96.418546
HF Energy-96.411382
Nuclear repulsion energy47.537930
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 B3LYP/cc-pVQZ
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 3055 2959 81.89      
2 A1 2863 2773 16.39      
3 A1 1382 1339 42.02      
4 A1 1292 1251 267.81      
5 A1 912 884 34.77      
6 A2 316 306 0.00      
7 E 3144 3046 3.89      
7 E 3144 3046 3.88      
8 E 2621 2539 2806.90      
8 E 2621 2539 2808.00      
9 E 1478 1432 0.03      
9 E 1478 1432 0.03      
10 E 1413 1369 10.94      
10 E 1413 1369 10.92      
11 E 1228 1190 24.83      
11 E 1228 1190 24.87      
12 E 879 852 77.98      
12 E 879 852 77.84      

Unscaled Zero Point Vibrational Energy (zpe) 15672.0 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 15183.1 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 B3LYP/cc-pVQZ
ABC
2.73984 0.67202 0.67202

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.798
N2 0.000 0.000 0.706
H3 0.000 -1.033 -1.131
H4 -0.895 0.517 -1.131
H5 0.895 0.517 -1.131
H6 0.000 0.983 1.080
H7 -0.852 -0.492 1.080
H8 0.852 -0.492 1.080

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.50381.08581.08581.08582.11962.11962.1196
N21.50382.10762.10762.10761.05201.05201.0520
H31.08582.10761.79001.79002.99252.43022.4302
H41.08582.10761.79001.79002.43022.43022.9925
H51.08582.10761.79001.79002.43022.99252.4302
H62.11961.05202.99252.43022.43021.70321.7032
H72.11961.05202.43022.43022.99251.70321.7032
H82.11961.05202.43022.99252.43021.70321.7032

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 110.820 C1 N2 H7 110.820
C1 N2 H8 110.820 N2 C1 H3 107.862
N2 C1 H4 107.862 N2 C1 H5 107.862
H3 C1 H4 111.031 H3 C1 H5 111.031
H4 C1 H5 111.031 H6 N2 H7 108.090
H6 N2 H8 108.090 H7 N2 H8 108.090
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.083      
2 N 0.645      
3 H 0.021      
4 H 0.021      
5 H 0.021      
6 H -0.264      
7 H -0.264      
8 H -0.264      


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 -1.522 1.522
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.018 0.000 0.000
y 0.000 -20.018 0.000
z 0.000 0.000 -18.508
Traceless
 xyz
x -0.755 0.000 0.000
y 0.000 -0.755 0.000
z 0.000 0.000 1.510
Polar
3z2-r23.020
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 17.905 0.000 0.000
y 0.000 17.898 -0.003
z 0.000 -0.003 11.479


<r2> (average value of r2) Å2
<r2> 32.936
(<r2>)1/2 5.739