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/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-96.270842
Energy at 298.15K-96.277934
HF Energy-96.270842
Nuclear repulsion energy47.373547
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/6-311+G(3df,2p)
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 2988 2988 65.63      
2 A1 2836 2836 7.54      
3 A1 1335 1335 33.38      
4 A1 1236 1236 673.11      
5 A1 904 904 80.89      
6 A2 285 285 0.00      
7 E 3080 3080 0.03      
7 E 3080 3080 0.03      
8 E 2687 2687 1583.15      
8 E 2687 2687 1586.03      
9 E 1427 1427 24.86      
9 E 1427 1427 25.07      
10 E 1396 1396 46.55      
10 E 1396 1396 46.59      
11 E 1196 1196 0.03      
11 E 1196 1196 0.04      
12 E 852 852 91.15      
12 E 852 852 91.56      

Unscaled Zero Point Vibrational Energy (zpe) 15430.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15430.3 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/6-311+G(3df,2p)
ABC
2.70634 0.66988 0.66988

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.797
N2 0.000 0.000 0.706
H3 0.000 -1.042 -1.135
H4 -0.902 0.521 -1.135
H5 0.902 0.521 -1.135
H6 0.000 0.987 1.082
H7 -0.855 -0.494 1.082
H8 0.855 -0.494 1.082

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.50361.09521.09521.09522.12292.12292.1229
N21.50362.11602.11602.11601.05651.05651.0565
H31.09522.11601.80421.80423.00582.43902.4390
H41.09522.11601.80421.80422.43902.43903.0058
H51.09522.11601.80421.80422.43903.00582.4390
H62.12291.05653.00582.43902.43901.71031.7103
H72.12291.05652.43902.43903.00581.71031.7103
H82.12291.05652.43903.00582.43901.71031.7103

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 110.832 C1 N2 H7 110.832
C1 N2 H8 110.832 N2 C1 H3 107.987
N2 C1 H4 107.987 N2 C1 H5 107.987
H3 C1 H4 110.914 H3 C1 H5 110.914
H4 C1 H5 110.914 H6 N2 H7 108.077
H6 N2 H8 108.077 H7 N2 H8 108.077
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.414      
2 N 0.396      
3 H 0.185      
4 H 0.185      
5 H 0.185      
6 H 0.154      
7 H 0.154      
8 H 0.154      


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 -1.157 1.157
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.130 0.000 0.000
y 0.000 -22.130 0.000
z 0.000 0.000 -18.990
Traceless
 xyz
x -1.570 0.000 0.000
y 0.000 -1.570 0.000
z 0.000 0.000 3.141
Polar
3z2-r26.281
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 29.143 0.000 0.000
y 0.000 29.067 0.022
z 0.000 0.022 17.525


<r2> (average value of r2) Å2
<r2> 34.035
(<r2>)1/2 5.834