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

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at G4
 hartrees
Energy at 0K-96.282750
Energy at 298.15K-96.277678
HF Energy-96.336636
Nuclear repulsion energy46.951862
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/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 3049 2942 65.65      
2 A1 2481 2394 104.82      
3 A1 1306 1260 130.70      
4 A1 1122 1083 13.21      
5 A1 828 799 22.80      
6 A2 272 263 0.00      
7 E 3146 3036 16.95      
7 E 3146 3036 16.94      
8 E 1654 1596 2080.30      
8 E 1654 1596 2080.54      
9 E 1460 1409 71.94      
9 E 1460 1409 71.93      
10 E 1213 1171 9.80      
10 E 1213 1171 9.80      
11 E 858 828 14.49      
11 E 858 828 14.48      
12 E 453 437 2191.50      
12 E 453 437 2190.98      

Unscaled Zero Point Vibrational Energy (zpe) 13313.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 12847.7 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/6-31G(2df,p)
ABC
2.58221 0.66778 0.66778

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

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 0.714
H3 0.000 -1.041 -1.125
H4 -0.902 0.521 -1.125
H5 0.902 0.521 -1.125
H6 0.000 1.037 1.056
H7 -0.898 -0.518 1.056
H8 0.898 -0.518 1.056

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.51221.09111.09111.09112.12482.12482.1248
N21.51222.11292.11292.11291.09201.09201.0920
H31.09112.11291.80321.80323.01252.41582.4158
H41.09112.11291.80321.80322.41582.41583.0125
H51.09112.11291.80321.80322.41583.01252.4158
H62.12481.09203.01252.41582.41581.79611.7961
H72.12481.09202.41582.41583.01251.79611.7961
H82.12481.09202.41583.01252.41581.79611.7961

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 108.258 C1 N2 H7 108.258
C1 N2 H8 108.258 N2 C1 H3 107.415
N2 C1 H4 107.415 N2 C1 H5 107.415
H3 C1 H4 111.447 H3 C1 H5 111.447
H4 C1 H5 111.447 H6 N2 H7 110.657
H6 N2 H8 110.657 H7 N2 H8 110.657
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.310      
2 N -0.090      
3 H 0.122      
4 H 0.122      
5 H 0.122      
6 H 0.012      
7 H 0.012      
8 H 0.012      


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 -0.903 0.903
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 31.457
(<r2>)1/2 5.609