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

using model chemistry: mPW1PW91/6-311+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 mPW1PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-96.375943
Energy at 298.15K-96.383110
HF Energy-96.375943
Nuclear repulsion energy47.871986
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 mPW1PW91/6-311+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 3080 3080 53.18      
2 A1 3015 3015 28.58      
3 A1 1402 1402 18.94      
4 A1 1312 1312 895.57      
5 A1 967 967 89.60      
6 A2 298 298 0.00      
7 E 3176 3176 3.95      
7 E 3176 3176 3.92      
8 E 2894 2894 2073.23      
8 E 2894 2894 2078.69      
9 E 1491 1491 155.77      
9 E 1491 1491 156.39      
10 E 1480 1480 17.82      
10 E 1480 1480 17.62      
11 E 1249 1249 1.58      
11 E 1249 1249 1.51      
12 E 882 882 151.35      
12 E 882 882 152.13      

Unscaled Zero Point Vibrational Energy (zpe) 16208.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16208.2 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 mPW1PW91/6-311+G(3df,2p)
ABC
2.77787 0.68237 0.68237

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.789
N2 0.000 0.000 0.699
H3 0.000 -1.032 -1.129
H4 -0.894 0.516 -1.129
H5 0.894 0.516 -1.129
H6 0.000 0.971 1.076
H7 -0.841 -0.485 1.076
H8 0.841 -0.485 1.076

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.48821.08631.08631.08632.10292.10292.1029
N21.48822.09912.09912.09911.04161.04161.0416
H31.08632.09911.78711.78712.97892.42252.4225
H41.08632.09911.78711.78712.42252.42252.9789
H51.08632.09911.78711.78712.42252.97892.4225
H62.10291.04162.97892.42252.42251.68161.6816
H72.10291.04162.42252.42252.97891.68161.6816
H82.10291.04162.42252.97892.42251.68161.6816

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 111.233 C1 N2 H7 111.233
C1 N2 H8 111.233 N2 C1 H3 108.231
N2 C1 H4 108.231 N2 C1 H5 108.231
H3 C1 H4 110.682 H3 C1 H5 110.682
H4 C1 H5 110.683 H6 N2 H7 107.653
H6 N2 H8 107.653 H7 N2 H8 107.653
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.352      
2 N 0.266      
3 H 0.185      
4 H 0.185      
5 H 0.185      
6 H 0.177      
7 H 0.177      
8 H 0.177      


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 -1.478 1.478
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.155 0.000 0.000
y 0.000 -22.155 0.000
z 0.000 0.000 -19.490
Traceless
 xyz
x -1.332 0.000 0.000
y 0.000 -1.332 0.000
z 0.000 0.000 2.665
Polar
3z2-r25.330
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 33.324 0.000 0.000
y 0.000 33.223 0.014
z 0.000 0.014 19.090


<r2> (average value of r2) Å2
<r2> 33.760
(<r2>)1/2 5.810