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

using model chemistry: LSDA/STO-3G

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/STO-3G
 hartrees
Energy at 0K-94.591948
Energy at 298.15K 
HF Energy-94.591948
Nuclear repulsion energy38.986859
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/STO-3G
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 3410 3054 8.65      
2 A1 3299 2955 4.80      
3 A1 1094 980 3.51      
4 A1 670 600 2.52      
5 A1 307 274 9.85      
6 A2 57 51 0.00      
7 E 3703 3316 2.03      
7 E 3703 3316 2.02      
8 E 3555 3184 2.45      
8 E 3555 3184 2.44      
9 E 1847 1654 5.08      
9 E 1847 1654 5.08      
10 E 1564 1400 0.32      
10 E 1564 1400 0.32      
11 E 357 320 0.57      
11 E 357 320 0.57      
12 E 81i 73i 77.81      
12 E 81i 73i 77.81      

Unscaled Zero Point Vibrational Energy (zpe) 15363.1 cm-1
Scaled (by 0.8955) Zero Point Vibrational Energy (zpe) 13757.7 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 LSDA/STO-3G
ABC
2.68605 0.31551 0.31551

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.286
N2 0.000 0.000 1.089
H3 0.000 -1.072 -1.496
H4 -0.928 0.536 -1.496
H5 0.928 0.536 -1.496
H6 0.000 0.963 1.528
H7 -0.834 -0.482 1.528
H8 0.834 -0.482 1.528

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C12.37511.09201.09201.09202.97502.97502.9750
N22.37512.79862.79862.79861.05861.05861.0586
H31.09202.79861.85611.85613.64563.19283.1928
H41.09202.79861.85611.85613.19283.19283.6456
H51.09202.79861.85611.85613.19283.64563.1928
H62.97501.05863.64563.19283.19281.66801.6680
H72.97501.05863.19283.19283.64561.66801.6680
H82.97501.05863.19283.64563.19281.66801.6680

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 114.537 C1 N2 H7 114.537
C1 N2 H8 114.537 N2 C1 H3 101.098
N2 C1 H4 101.098 N2 C1 H5 101.098
H3 C1 H4 116.387 H3 C1 H5 116.387
H4 C1 H5 116.387 H6 N2 H7 103.964
H6 N2 H8 103.964 H7 N2 H8 103.964
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.289      
2 N -0.422      
3 H 0.056      
4 H 0.056      
5 H 0.056      
6 H 0.182      
7 H 0.182      
8 H 0.182      


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 3.052 3.052
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.601 0.000 0.000
y 0.000 -12.601 0.000
z 0.000 0.000 -9.972
Traceless
 xyz
x -1.315 0.000 0.000
y 0.000 -1.315 0.000
z 0.000 0.000 2.629
Polar
3z2-r25.258
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 1.610 0.000 0.000
y 0.000 1.610 0.000
z 0.000 0.000 2.340


<r2> (average value of r2) Å2
<r2> 45.504
(<r2>)1/2 6.746