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

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-95.666292
Energy at 298.15K 
HF Energy-95.666292
Nuclear repulsion energy45.430101
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 PBEPBE/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 3001 2973 37.95      
2 A1 2189 2169 132.39      
3 A1 1236 1225 199.01      
4 A1 1022 1013 1.68      
5 A1 592 587 10.85      
6 A2 237 235 0.00      
7 E 3105 3077 20.67      
7 E 3105 3077 20.67      
8 E 1476 1462 50.11      
8 E 1476 1462 50.10      
9 E 1406 1393 804.55      
9 E 1406 1393 804.75      
10 E 1096 1086 16.92      
10 E 1096 1086 16.92      
11 E 800 793 20.61      
11 E 800 793 20.62      
12 E 805i 798i 2502.23      
12 E 805i 798i 2502.81      

Unscaled Zero Point Vibrational Energy (zpe) 11216.5 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 11114.4 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 PBEPBE/3-21G
ABC
2.41129 0.62350 0.62350

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.833
N2 0.000 0.000 0.744
H3 0.000 -1.054 -1.145
H4 -0.913 0.527 -1.145
H5 0.913 0.527 -1.145
H6 0.000 1.096 1.077
H7 -0.949 -0.548 1.077
H8 0.949 -0.548 1.077

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.57671.09931.09931.09932.20212.20212.2021
N21.57672.16312.16312.16311.14561.14561.1456
H31.09932.16311.82561.82563.09202.46882.4688
H41.09932.16311.82561.82562.46882.46883.0920
H51.09932.16311.82561.82562.46883.09202.4688
H62.20211.14563.09202.46882.46881.89841.8984
H72.20211.14562.46882.46883.09201.89841.8984
H82.20211.14562.46883.09202.46881.89841.8984

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 106.913 C1 N2 H7 106.913
C1 N2 H8 106.913 N2 C1 H3 106.500
N2 C1 H4 106.500 N2 C1 H5 106.500
H3 C1 H4 112.272 H3 C1 H5 112.272
H4 C1 H5 112.272 H6 N2 H7 111.904
H6 N2 H8 111.904 H7 N2 H8 111.904
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.516      
2 N -0.462      
3 H 0.215      
4 H 0.215      
5 H 0.215      
6 H 0.111      
7 H 0.111      
8 H 0.111      


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 -0.833 0.833
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.005 0.000 0.000
y 0.000 -16.005 0.000
z 0.000 0.000 -16.347
Traceless
 xyz
x 0.171 0.000 0.000
y 0.000 0.171 0.000
z 0.000 0.000 -0.342
Polar
3z2-r2-0.684
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 6.196 0.000 0.000
y 0.000 6.197 0.000
z 0.000 0.000 4.916


<r2> (average value of r2) Å2
<r2> 32.453
(<r2>)1/2 5.697