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

using model chemistry: PBE1PBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at PBE1PBE/STO-3G
 hartrees
Energy at 0K-95.023818
Energy at 298.15K 
HF Energy-95.023818
Nuclear repulsion energy33.098510
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 PBE1PBE/STO-3G
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 3486 3075 22.92      
2 A1 3371 2974 0.14      
3 A1 1369 1207 37.65      
4 A1 513 453 29.43      
5 A1 26i 23i 0.03      
6 A2 15 13 0.00      
7 E 3755 3312 14.39      
7 E 3755 3312 14.39      
8 E 3643 3213 0.02      
8 E 3643 3213 0.02      
9 E 1956 1725 1.45      
9 E 1956 1725 1.45      
10 E 1568 1383 0.16      
10 E 1568 1383 0.16      
11 E 33i 29i 73.88      
11 E 33i 29i 73.89      
12 E 88i 77i 8.96      
12 E 88i 77i 8.96      

Unscaled Zero Point Vibrational Energy (zpe) 15164.2 cm-1
Scaled (by 0.8821) Zero Point Vibrational Energy (zpe) 13376.3 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 PBE1PBE/STO-3G
ABC
2.70977 0.13771 0.13771

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.095
N2 0.000 0.000 1.702
H3 0.000 -1.082 -1.963
H4 -0.937 0.541 -1.963
H5 0.937 0.541 -1.963
H6 0.000 0.942 2.182
H7 -0.816 -0.471 2.182
H8 0.816 -0.471 2.182

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C13.79781.09001.09001.09004.37944.37944.3794
N23.79783.82193.82193.82191.05671.05671.0567
H31.09003.82191.87401.87404.61244.26824.2682
H41.09003.82191.87401.87404.26824.26824.6124
H51.09003.82191.87401.87404.26824.61244.2682
H64.37941.05674.61244.26824.26821.63121.6312
H74.37941.05674.26824.26824.61241.63121.6312
H84.37941.05674.26824.61244.26821.63121.6312

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 116.968 C1 N2 H7 116.968
C1 N2 H8 116.968 N2 C1 H3 83.033
N2 C1 H4 83.033 N2 C1 H5 83.033
H3 C1 H4 118.551 H3 C1 H5 118.551
H4 C1 H5 118.550 H6 N2 H7 101.042
H6 N2 H8 101.042 H7 N2 H8 101.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.218      
2 N -0.445      
3 H 0.073      
4 H 0.073      
5 H 0.073      
6 H 0.149      
7 H 0.149      
8 H 0.149      


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 2.197 2.197
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.743 0.000 0.000
y 0.000 -12.743 0.000
z 0.000 0.000 -8.620
Traceless
 xyz
x -2.061 0.000 0.000
y 0.000 -2.061 0.000
z 0.000 0.000 4.122
Polar
3z2-r28.245
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 1.657 0.000 0.000
y 0.000 1.657 0.000
z 0.000 0.000 0.601


<r2> (average value of r2) Å2
<r2> 85.745
(<r2>)1/2 9.260