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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-96.210667
Energy at 298.15K 
HF Energy-96.210667
Nuclear repulsion energy47.194748
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 PBE1PBE/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 3067 2935 61.53      
2 A1 2524 2415 91.09      
3 A1 1311 1255 128.01      
4 A1 1124 1076 9.15      
5 A1 882 844 33.94      
6 A2 277 265 0.00      
7 E 3172 3036 12.66      
7 E 3172 3036 12.66      
8 E 1592 1523 2246.60      
8 E 1592 1523 2246.86      
9 E 1456 1393 156.32      
9 E 1456 1393 156.36      
10 E 1217 1164 11.57      
10 E 1217 1164 11.56      
11 E 854 817 18.92      
11 E 854 817 18.93      
12 E 534i 511i 3844.94      
12 E 534i 511i 3845.86      

Unscaled Zero Point Vibrational Energy (zpe) 12348.2 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 11817.2 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 PBE1PBE/6-31G(2df,p)
ABC
2.58503 0.67886 0.67886

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.788
N2 0.000 0.000 0.708
H3 0.000 -1.040 -1.120
H4 -0.901 0.520 -1.120
H5 0.901 0.520 -1.120
H6 0.000 1.037 1.044
H7 -0.898 -0.518 1.044
H8 0.898 -0.518 1.044

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.49661.09161.09161.09162.10572.10572.1057
N21.49662.10342.10342.10341.09001.09001.0900
H31.09162.10341.80141.80142.99972.40062.4006
H41.09162.10341.80141.80142.40062.40062.9997
H51.09162.10341.80141.80142.40062.99972.4006
H62.10571.09002.99972.40062.40061.79601.7960
H72.10571.09002.40062.40062.99971.79601.7960
H82.10571.09002.40062.99972.40061.79601.7960

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 107.958 C1 N2 H7 107.958
C1 N2 H8 107.958 N2 C1 H3 107.683
N2 C1 H4 107.683 N2 C1 H5 107.683
H3 C1 H4 111.198 H3 C1 H5 111.198
H4 C1 H5 111.198 H6 N2 H7 110.941
H6 N2 H8 110.941 H7 N2 H8 110.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.366      
2 N -0.148      
3 H 0.146      
4 H 0.146      
5 H 0.146      
6 H 0.025      
7 H 0.025      
8 H 0.025      


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 -0.920 0.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.783 0.000 0.000
y 0.000 -16.783 0.000
z 0.000 0.000 -16.435
Traceless
 xyz
x -0.174 0.000 0.000
y 0.000 -0.174 0.000
z 0.000 0.000 0.349
Polar
3z2-r20.697
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 8.765 0.000 0.000
y 0.000 8.767 0.000
z 0.000 0.000 5.458


<r2> (average value of r2) Å2
<r2> 31.156
(<r2>)1/2 5.582