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

using model chemistry: B3PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at B3PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-96.368998
Energy at 298.15K-96.376151
HF Energy-96.368998
Nuclear repulsion energy47.767620
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 B3PW91/6-311+G(3df,2p)
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 3063 2932 54.29      
2 A1 2980 2853 24.94      
3 A1 1392 1333 20.79      
4 A1 1301 1245 822.51      
5 A1 951 910 82.86      
6 A2 295 282 0.00      
7 E 3158 3023 2.49      
7 E 3158 3023 2.49      
8 E 2854 2732 1870.47      
8 E 2854 2732 1874.11      
9 E 1479 1416 93.72      
9 E 1479 1416 94.18      
10 E 1468 1405 46.26      
10 E 1468 1405 46.32      
11 E 1240 1187 0.86      
11 E 1240 1187 0.90      
12 E 878 840 130.48      
12 E 878 840 131.06      

Unscaled Zero Point Vibrational Energy (zpe) 16066.6 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 15380.6 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 B3PW91/6-311+G(3df,2p)
ABC
2.76609 0.67929 0.67929

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.791
N2 0.000 0.000 0.701
H3 0.000 -1.033 -1.131
H4 -0.895 0.517 -1.131
H5 0.895 0.517 -1.131
H6 0.000 0.974 1.078
H7 -0.843 -0.487 1.078
H8 0.843 -0.487 1.078

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.49201.08761.08761.08762.10792.10792.1079
N21.49202.10282.10282.10281.04431.04431.0443
H31.08762.10281.78961.78962.98452.42682.4268
H41.08762.10281.78961.78962.42682.42682.9845
H51.08762.10281.78961.78962.42682.98452.4268
H62.10791.04432.98452.42682.42681.68651.6865
H72.10791.04432.42682.42682.98451.68651.6865
H82.10791.04432.42682.98452.42681.68651.6865

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 111.190 C1 N2 H7 111.190
C1 N2 H8 111.190 N2 C1 H3 108.190
N2 C1 H4 108.190 N2 C1 H5 108.190
H3 C1 H4 110.722 H3 C1 H5 110.722
H4 C1 H5 110.722 H6 N2 H7 107.699
H6 N2 H8 107.699 H7 N2 H8 107.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.381      
2 N 0.274      
3 H 0.193      
4 H 0.193      
5 H 0.193      
6 H 0.176      
7 H 0.176      
8 H 0.176      


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 -1.444 1.444
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.100 0.000 0.000
y 0.000 -22.100 0.000
z 0.000 0.000 -19.387
Traceless
 xyz
x -1.357 0.000 0.000
y 0.000 -1.357 0.000
z 0.000 0.000 2.713
Polar
3z2-r25.426
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 31.688 0.000 0.000
y 0.000 31.604 0.024
z 0.000 0.024 18.447


<r2> (average value of r2) Å2
<r2> 33.803
(<r2>)1/2 5.814