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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-96.300215
Energy at 298.15K 
HF Energy-96.300215
Nuclear repulsion energy46.993784
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 B3PW91/6-31G**
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 3072 2944 56.85      
2 A1 2500 2396 83.71      
3 A1 1316 1261 128.78      
4 A1 1114 1068 11.39      
5 A1 833 799 26.29      
6 A2 273 262 0.00      
7 E 3174 3042 15.42      
7 E 3174 3042 15.43      
8 E 1604 1538 2217.41      
8 E 1604 1538 2217.54      
9 E 1470 1409 141.58      
9 E 1470 1409 141.56      
10 E 1205 1155 9.36      
10 E 1205 1155 9.35      
11 E 850 814 19.83      
11 E 850 814 19.82      
12 E 169i 162i 3069.50      
12 E 169i 162i 3069.26      

Unscaled Zero Point Vibrational Energy (zpe) 12688.4 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 12160.6 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 B3PW91/6-31G**
ABC
2.58494 0.67021 0.67021

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.795
N2 0.000 0.000 0.712
H3 0.000 -1.039 -1.128
H4 -0.900 0.520 -1.128
H5 0.900 0.520 -1.128
H6 0.000 1.038 1.057
H7 -0.899 -0.519 1.057
H8 0.899 -0.519 1.057

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.50611.09131.09131.09132.12272.12272.1227
N21.50612.11302.11302.11301.09391.09391.0939
H31.09132.11301.79971.79973.01492.41952.4195
H41.09132.11301.79971.79972.41952.41953.0149
H51.09132.11301.79971.79972.41953.01492.4195
H62.12271.09393.01492.41952.41951.79781.7978
H72.12271.09392.41952.41953.01491.79781.7978
H82.12271.09392.41953.01492.41951.79781.7978

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 108.412 C1 N2 H7 108.412
C1 N2 H8 108.412 N2 C1 H3 107.804
N2 C1 H4 107.804 N2 C1 H5 107.804
H3 C1 H4 111.086 H3 C1 H5 111.086
H4 C1 H5 111.086 H6 N2 H7 110.510
H6 N2 H8 110.510 H7 N2 H8 110.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.295      
2 N -0.243      
3 H 0.142      
4 H 0.142      
5 H 0.142      
6 H 0.037      
7 H 0.037      
8 H 0.037      


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 -1.010 1.010
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.784 0.000 0.000
y 0.000 -16.784 0.000
z 0.000 0.000 -16.493
Traceless
 xyz
x -0.146 0.000 0.000
y 0.000 -0.146 0.000
z 0.000 0.000 0.291
Polar
3z2-r20.582
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 8.230 0.000 0.000
y 0.000 8.230 0.000
z 0.000 0.000 5.285


<r2> (average value of r2) Å2
<r2> 31.397
(<r2>)1/2 5.603