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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-96.288357
Energy at 298.15K 
HF Energy-96.288357
Nuclear repulsion energy46.941185
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 3083 2949 55.24      
2 A1 2486 2378 82.77      
3 A1 1329 1272 129.54      
4 A1 1129 1080 11.99      
5 A1 844 807 24.80      
6 A2 277 265 0.00      
7 E 3181 3044 15.93      
7 E 3181 3044 15.94      
8 E 1580 1511 1915.12      
8 E 1580 1511 1915.21      
9 E 1484 1420 238.28      
9 E 1484 1420 238.33      
10 E 1216 1164 4.87      
10 E 1216 1164 4.87      
11 E 856 819 8.61      
11 E 856 819 8.61      
12 E 268i 256i 3418.86      
12 E 268i 256i 3418.56      

Unscaled Zero Point Vibrational Energy (zpe) 12622.4 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 12075.9 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
2.57934 0.66908 0.66908

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 -0.796
N2 0.000 0.000 0.711
H3 0.000 -1.040 -1.129
H4 -0.901 0.520 -1.129
H5 0.901 0.520 -1.129
H6 0.000 1.039 1.061
H7 -0.900 -0.520 1.061
H8 0.900 -0.520 1.061

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.50631.09201.09201.09202.12812.12812.1281
N21.50632.11322.11322.11321.09701.09701.0970
H31.09202.11321.80111.80113.02012.42462.4246
H41.09202.11321.80111.80112.42462.42463.0201
H51.09202.11321.80111.80112.42463.02012.4246
H62.12811.09703.02012.42462.42461.80031.8003
H72.12811.09702.42462.42463.02011.80031.8003
H82.12811.09702.42463.02012.42461.80031.8003

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 108.645 C1 N2 H7 108.645
C1 N2 H8 108.645 N2 C1 H3 107.773
N2 C1 H4 107.773 N2 C1 H5 107.773
H3 C1 H4 111.114 H3 C1 H5 111.114
H4 C1 H5 111.115 H6 N2 H7 110.284
H6 N2 H8 110.284 H7 N2 H8 110.284
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 -0.409      
2 N -0.410      
3 H 0.181      
4 H 0.181      
5 H 0.181      
6 H 0.092      
7 H 0.092      
8 H 0.092      


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 -1.039 1.039
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.806 0.000 0.000
y 0.000 -16.806 0.000
z 0.000 0.000 -16.578
Traceless
 xyz
x -0.114 0.000 0.000
y 0.000 -0.114 0.000
z 0.000 0.000 0.228
Polar
3z2-r20.455
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 8.254 0.000 0.000
y 0.000 8.254 0.000
z 0.000 0.000 5.212


<r2> (average value of r2) Å2
<r2> 31.471
(<r2>)1/2 5.610