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

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-95.761462
Energy at 298.15K 
HF Energy-95.761462
Nuclear repulsion energy45.884727
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 B3PW91/3-21G*
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 3081 2956 31.01      
2 A1 2279 2187 123.83      
3 A1 1301 1248 185.04      
4 A1 1058 1015 0.64      
5 A1 651 624 8.61      
6 A2 247 237 0.00      
7 E 3184 3054 16.94      
7 E 3184 3054 16.94      
8 E 1520 1459 1.64      
8 E 1520 1459 1.64      
9 E 1374 1318 806.50      
9 E 1374 1318 806.58      
10 E 1141 1094 17.11      
10 E 1141 1094 17.11      
11 E 826 792 12.47      
11 E 826 792 12.48      
12 E 1111i 1066i 4235.36      
12 E 1111i 1066i 4235.81      

Unscaled Zero Point Vibrational Energy (zpe) 11241.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 10785.1 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 B3PW91/3-21G*
ABC
2.47136 0.63507 0.63507

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.824
N2 0.000 0.000 0.736
H3 0.000 -1.044 -1.141
H4 -0.904 0.522 -1.141
H5 0.904 0.522 -1.141
H6 0.000 1.080 1.072
H7 -0.935 -0.540 1.072
H8 0.935 -0.540 1.072

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.55971.09121.09121.09122.18162.18162.1816
N21.55972.14762.14762.14761.13091.13091.1309
H31.09122.14761.80841.80843.06712.45452.4545
H41.09122.14761.80841.80842.45452.45453.0671
H51.09122.14761.80841.80842.45453.06712.4545
H62.18161.13093.06712.45452.45451.87031.8703
H72.18161.13092.45452.45453.06711.87031.8703
H82.18161.13092.45453.06712.45451.87031.8703

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 107.283 C1 N2 H7 107.283
C1 N2 H8 107.283 N2 C1 H3 106.893
N2 C1 H4 106.893 N2 C1 H5 106.893
H3 C1 H4 111.922 H3 C1 H5 111.922
H4 C1 H5 111.922 H6 N2 H7 111.568
H6 N2 H8 111.568 H7 N2 H8 111.568
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.522      
2 N -0.502      
3 H 0.225      
4 H 0.225      
5 H 0.225      
6 H 0.116      
7 H 0.116      
8 H 0.116      


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 -0.977 0.977
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.011 0.000 0.000
y 0.000 -16.011 0.000
z 0.000 0.000 -16.325
Traceless
 xyz
x 0.157 0.000 0.000
y 0.000 0.157 0.000
z 0.000 0.000 -0.314
Polar
3z2-r2-0.628
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 6.742 0.000 0.000
y 0.000 6.742 0.000
z 0.000 0.000 4.816


<r2> (average value of r2) Å2
<r2> 32.047
(<r2>)1/2 5.661