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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/3-21G
 hartrees
Energy at 0K-95.666292
Energy at 298.15K 
HF Energy-95.666292
Nuclear repulsion energy45.430838
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 PBEPBEultrafine/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 3000 2973 37.90      
2 A1 2189 2169 132.11      
3 A1 1236 1225 198.63      
4 A1 1022 1013 1.68      
5 A1 593 588 10.80      
6 A2 241 238 0.00      
7 E 3104 3076 20.66      
7 E 3104 3076 20.66      
8 E 1476 1463 49.41      
8 E 1476 1463 49.41      
9 E 1406 1394 804.74      
9 E 1406 1394 804.74      
10 E 1096 1087 16.74      
10 E 1096 1087 16.74      
11 E 801 793 20.75      
11 E 801 793 20.75      
12 E 805i 797i 2501.75      
12 E 805i 797i 2501.72      

Unscaled Zero Point Vibrational Energy (zpe) 11219.5 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 11117.4 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 PBEPBEultrafine/3-21G
ABC
2.41129 0.62355 0.62355

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/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 0.743
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
C11.57651.09931.09931.09932.20202.20202.2020
N21.57652.16312.16312.16311.14561.14561.1456
H31.09932.16311.82561.82563.09212.46892.4689
H41.09932.16311.82561.82562.46892.46893.0921
H51.09932.16311.82561.82562.46893.09212.4689
H62.20201.14563.09212.46892.46891.89851.8985
H72.20201.14562.46892.46893.09211.89851.8985
H82.20201.14562.46893.09212.46891.89851.8985

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 106.916 C1 N2 H7 106.916
C1 N2 H8 106.916 N2 C1 H3 106.509
N2 C1 H4 106.509 N2 C1 H5 106.509
H3 C1 H4 112.264 H3 C1 H5 112.264
H4 C1 H5 112.264 H6 N2 H7 111.902
H6 N2 H8 111.902 H7 N2 H8 111.901
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/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 -0.341
Polar
3z2-r2-0.683
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 6.196 0.000
z 0.000 0.000 4.914


<r2> (average value of r2) Å2
<r2> 32.452
(<r2>)1/2 5.697