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

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-96.203457
Energy at 298.15K 
HF Energy-96.203457
Nuclear repulsion energy46.663901
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 PBEPBE/6-31G(2df,p)
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 2977 2947 76.55      
2 A1 2394 2369 106.50      
3 A1 1242 1230 149.85      
4 A1 1068 1057 5.84      
5 A1 804 796 18.73      
6 A2 259 256 0.00      
7 E 3080 3049 18.82      
7 E 3080 3049 18.82      
8 E 1618 1601 1846.34      
8 E 1618 1601 1846.61      
9 E 1402 1388 67.89      
9 E 1402 1388 67.88      
10 E 1163 1151 21.42      
10 E 1163 1151 21.42      
11 E 826 817 39.64      
11 E 826 817 39.64      
12 E 159i 157i 2011.29      
12 E 159i 157i 2010.74      

Unscaled Zero Point Vibrational Energy (zpe) 12303.2 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 12176.5 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 PBEPBE/6-31G(2df,p)
ABC
2.51935 0.66396 0.66396

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

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 0.717
H3 0.000 -1.050 -1.125
H4 -0.909 0.525 -1.125
H5 0.909 0.525 -1.125
H6 0.000 1.054 1.050
H7 -0.913 -0.527 1.050
H8 0.913 -0.527 1.050

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.51711.09951.09951.09952.12912.12912.1291
N21.51712.12102.12102.12101.10501.10501.1050
H31.09952.12101.81901.81903.02662.41672.4167
H41.09952.12101.81901.81902.41672.41673.0266
H51.09952.12101.81901.81902.41673.02662.4167
H62.12911.10503.02662.41672.41671.82501.8250
H72.12911.10502.41672.41673.02661.82501.8250
H82.12911.10502.41673.02662.41671.82501.8250

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 107.540 C1 N2 H7 107.540
C1 N2 H8 107.540 N2 C1 H3 107.231
N2 C1 H4 107.231 N2 C1 H5 107.231
H3 C1 H4 111.616 H3 C1 H5 111.616
H4 C1 H5 111.616 H6 N2 H7 111.332
H6 N2 H8 111.332 H7 N2 H8 111.332
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.342      
2 N -0.110      
3 H 0.130      
4 H 0.130      
5 H 0.130      
6 H 0.021      
7 H 0.021      
8 H 0.021      


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 -0.803 0.803
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.773 0.000 0.000
y 0.000 -16.773 0.000
z 0.000 0.000 -16.471
Traceless
 xyz
x -0.151 0.000 0.000
y 0.000 -0.151 0.000
z 0.000 0.000 0.303
Polar
3z2-r20.606
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 7.891 0.000 0.000
y 0.000 7.893 0.000
z 0.000 0.000 5.664


<r2> (average value of r2) Å2
<r2> 31.601
(<r2>)1/2 5.622