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

using model chemistry: mPW1PW91/6-31G(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 mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-96.306614
Energy at 298.15K 
HF Energy-96.306614
Nuclear repulsion energy47.204452
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 mPW1PW91/6-31G(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 3073 2934 61.21      
2 A1 2524 2410 85.71      
3 A1 1317 1258 123.24      
4 A1 1123 1072 11.11      
5 A1 876 836 34.13      
6 A2 277 265 0.00      
7 E 3178 3034 13.02      
7 E 3178 3034 13.02      
8 E 1594 1522 2254.94      
8 E 1594 1522 2255.02      
9 E 1462 1396 161.77      
9 E 1462 1396 161.76      
10 E 1219 1164 11.43      
10 E 1219 1164 11.43      
11 E 856 817 18.90      
11 E 856 817 18.90      
12 E 506i 483i 3801.75      
12 E 506i 483i 3802.09      

Unscaled Zero Point Vibrational Energy (zpe) 12398.0 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 11836.3 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 mPW1PW91/6-31G(2df,p)
ABC
2.59199 0.67824 0.67824

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.789
N2 0.000 0.000 0.709
H3 0.000 -1.039 -1.121
H4 -0.899 0.519 -1.121
H5 0.899 0.519 -1.121
H6 0.000 1.036 1.046
H7 -0.897 -0.518 1.046
H8 0.897 -0.518 1.046

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.49771.09021.09021.09022.10692.10692.1069
N21.49772.10342.10342.10341.08911.08911.0891
H31.09022.10341.79891.79892.99912.40172.4017
H41.09022.10341.79891.79892.40172.40172.9991
H51.09022.10341.79891.79892.40172.99912.4017
H62.10691.08912.99912.40172.40171.79371.7937
H72.10691.08912.40172.40172.99911.79371.7937
H82.10691.08912.40172.99912.40171.79371.7937

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 108.032 C1 N2 H7 108.032
C1 N2 H8 108.032 N2 C1 H3 107.699
N2 C1 H4 107.700 N2 C1 H5 107.700
H3 C1 H4 111.183 H3 C1 H5 111.183
H4 C1 H5 111.183 H6 N2 H7 110.872
H6 N2 H8 110.872 H7 N2 H8 110.872
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.369      
2 N -0.143      
3 H 0.148      
4 H 0.148      
5 H 0.148      
6 H 0.023      
7 H 0.023      
8 H 0.023      


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 -0.958 0.958
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.755 0.000 0.000
y 0.000 -16.755 0.000
z 0.000 0.000 -16.414
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-r20.683
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 8.756 0.000 0.000
y 0.000 8.757 0.000
z 0.000 0.000 5.421


<r2> (average value of r2) Å2
<r2> 31.145
(<r2>)1/2 5.581