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

using model chemistry: HF/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 HF/6-31G(2df,p)
 hartrees
Energy at 0K-95.649585
Energy at 298.15K 
HF Energy-95.649585
Nuclear repulsion energy47.719939
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 HF/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 3210 2907 36.77      
2 A1 2750 2490 46.20      
3 A1 1490 1350 46.44      
4 A1 1245 1128 38.01      
5 A1 980 888 66.08      
6 A2 314 284 0.00      
7 E 3303 2991 9.85      
7 E 3303 2991 9.85      
8 E 1611 1459 17.76      
8 E 1611 1459 17.76      
9 E 1459 1321 1488.40      
9 E 1459 1321 1488.40      
10 E 1350 1222 27.51      
10 E 1350 1222 27.51      
11 E 953 863 8.01      
11 E 953 863 8.01      
12 E 1698i 1537i 20117.91      
12 E 1698i 1537i 20117.91      

Unscaled Zero Point Vibrational Energy (zpe) 11973.1 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 10841.7 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 HF/6-31G(2df,p)
ABC
2.70985 0.68541 0.68541

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.785
N2 0.000 0.000 0.701
H3 0.000 -1.026 -1.124
H4 -0.888 0.513 -1.124
H5 0.888 0.513 -1.124
H6 0.000 1.003 1.058
H7 -0.868 -0.501 1.058
H8 0.868 -0.501 1.058

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.48621.08051.08051.08052.09772.09772.0977
N21.48622.09422.09422.09421.06411.06411.0641
H31.08052.09421.77661.77662.97932.40642.4064
H41.08052.09421.77661.77662.40642.40642.9793
H51.08052.09421.77661.77662.40642.97932.4064
H62.09771.06412.97932.40642.40641.73671.7367
H72.09771.06412.40642.40642.97931.73671.7367
H82.09771.06412.40642.97932.40641.73671.7367

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 109.565 C1 N2 H7 109.565
C1 N2 H8 109.565 N2 C1 H3 108.319
N2 C1 H4 108.319 N2 C1 H5 108.319
H3 C1 H4 110.598 H3 C1 H5 110.598
H4 C1 H5 110.598 H6 N2 H7 109.377
H6 N2 H8 109.377 H7 N2 H8 109.377
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.299      
2 N -0.176      
3 H 0.147      
4 H 0.147      
5 H 0.147      
6 H 0.011      
7 H 0.011      
8 H 0.011      


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 -1.320 1.320
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.086 0.000 0.000
y 0.000 -17.086 0.000
z 0.000 0.000 -16.746
Traceless
 xyz
x -0.170 0.000 0.000
y 0.000 -0.170 0.000
z 0.000 0.000 0.340
Polar
3z2-r20.679
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 12.583 0.000 0.000
y 0.000 12.583 0.000
z 0.000 0.000 4.872


<r2> (average value of r2) Å2
<r2> 31.062
(<r2>)1/2 5.573