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

using model chemistry: B2PLYP/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 B2PLYP/3-21G
 hartrees
Energy at 0K-95.624306
Energy at 298.15K 
HF Energy-95.548310
Nuclear repulsion energy45.810670
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 B2PLYP/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 3112 3112 24.51      
2 A1 2266 2266 146.26      
3 A1 1322 1322 167.53      
4 A1 1065 1065 0.03      
5 A1 609 609 14.04      
6 A2 251 251 0.00      
7 E 3211 3211 15.73      
7 E 3211 3211 15.74      
8 E 1553 1553 0.02      
8 E 1553 1553 0.02      
9 E 1367 1367 698.19      
9 E 1367 1367 698.12      
10 E 1158 1158 7.99      
10 E 1158 1158 7.99      
11 E 833 833 10.05      
11 E 833 833 10.05      
12 E 1232i 1232i 4950.48      
12 E 1232i 1232i 4951.51      

Unscaled Zero Point Vibrational Energy (zpe) 11203.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11203.1 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 B2PLYP/3-21G
ABC
2.49201 0.62825 0.62825

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.831
N2 0.000 0.000 0.740
H3 0.000 -1.041 -1.145
H4 -0.902 0.521 -1.145
H5 0.902 0.521 -1.145
H6 0.000 1.074 1.081
H7 -0.930 -0.537 1.081
H8 0.930 -0.537 1.081

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.57081.08761.08761.08762.19342.19342.1934
N21.57082.15332.15332.15331.12681.12681.1268
H31.08762.15331.80371.80373.07102.46502.4650
H41.08762.15331.80371.80372.46502.46503.0710
H51.08762.15331.80371.80372.46503.07102.4650
H62.19341.12683.07102.46502.46501.85981.8598
H72.19341.12682.46502.46503.07101.85981.8598
H82.19341.12682.46503.07102.46501.85981.8598

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 107.655 C1 N2 H7 107.655
C1 N2 H8 107.655 N2 C1 H3 106.774
N2 C1 H4 106.774 N2 C1 H5 106.774
H3 C1 H4 112.029 H3 C1 H5 112.029
H4 C1 H5 112.029 H6 N2 H7 111.225
H6 N2 H8 111.225 H7 N2 H8 111.225
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.451      
2 N -0.474      
3 H 0.203      
4 H 0.203      
5 H 0.203      
6 H 0.105      
7 H 0.105      
8 H 0.105      


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 -1.024 1.024
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.229 0.000 0.000
y 0.000 -16.229 0.000
z 0.000 0.000 -16.497
Traceless
 xyz
x 0.134 0.000 0.000
y 0.000 0.134 0.000
z 0.000 0.000 -0.268
Polar
3z2-r2-0.536
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 6.820 0.000 0.000
y 0.000 6.821 0.000
z 0.000 0.000 4.881


<r2> (average value of r2) Å2
<r2> 32.321
(<r2>)1/2 5.685