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

using model chemistry: LSDA/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 LSDA/6-31G(2df,p)
 hartrees
Energy at 0K-95.837214
Energy at 298.15K-95.843999
HF Energy-95.837214
Nuclear repulsion energy47.117056
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 LSDA/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 2969 2922 81.52      
2 A1 2483 2444 115.90      
3 A1 1228 1209 173.41      
4 A1 1090 1072 4.69      
5 A1 884 870 30.38      
6 A2 269 265 0.00      
7 E 3073 3024 15.29      
7 E 3073 3024 15.29      
8 E 1800 1771 2064.40      
8 E 1800 1771 2064.62      
9 E 1374 1352 38.42      
9 E 1374 1352 38.42      
10 E 1167 1149 15.54      
10 E 1167 1149 15.54      
11 E 809 796 1.70      
11 E 809 796 1.71      
12 E 759 747 782.69      
12 E 759 747 782.59      

Unscaled Zero Point Vibrational Energy (zpe) 13445.5 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 13230.4 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 LSDA/6-31G(2df,p)
ABC
2.53681 0.68330 0.68330

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/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 0.703
H3 0.000 -1.051 -1.114
H4 -0.910 0.526 -1.114
H5 0.910 0.526 -1.114
H6 0.000 1.046 1.042
H7 -0.905 -0.523 1.042
H8 0.905 -0.523 1.042

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.48821.10131.10131.10132.10472.10472.1047
N21.48822.09912.09912.09911.09891.09891.0989
H31.10132.09911.82051.82053.00692.39692.3969
H41.10132.09911.82051.82052.39692.39693.0069
H51.10132.09911.82051.82052.39693.00692.3969
H62.10471.09893.00692.39692.39691.81091.8109
H72.10471.09892.39692.39693.00691.81091.8109
H82.10471.09892.39693.00692.39691.81091.8109

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 107.937 C1 N2 H7 107.937
C1 N2 H8 107.937 N2 C1 H3 107.373
N2 C1 H4 107.373 N2 C1 H5 107.373
H3 C1 H4 111.486 H3 C1 H5 111.486
H4 C1 H5 111.486 H6 N2 H7 110.960
H6 N2 H8 110.960 H7 N2 H8 110.960
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.430      
2 N -0.141      
3 H 0.144      
4 H 0.144      
5 H 0.144      
6 H 0.046      
7 H 0.046      
8 H 0.046      


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 -0.618 0.618
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.806 0.000 0.000
y 0.000 -16.806 0.000
z 0.000 0.000 -16.506
Traceless
 xyz
x -0.150 0.000 0.000
y 0.000 -0.150 0.000
z 0.000 0.000 0.300
Polar
3z2-r20.599
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 7.560 0.000 0.000
y 0.000 7.561 0.000
z 0.000 0.000 5.869


<r2> (average value of r2) Å2
<r2> 31.163
(<r2>)1/2 5.582