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

using model chemistry: TPSSh/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at TPSSh/3-21G
 hartrees
Energy at 0K-95.796154
Energy at 298.15K 
HF Energy-95.796154
Nuclear repulsion energy45.533575
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 TPSSh/3-21G
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 3074 2978 30.30      
2 A1 2164 2097 122.03      
3 A1 1294 1254 151.44      
4 A1 1024 992 4.55      
5 A1 590 572 15.42      
6 A2 245 237 0.00      
7 E 3173 3074 20.17      
7 E 3173 3074 20.17      
8 E 1530 1482 0.05      
8 E 1530 1482 0.05      
9 E 1304 1263 493.34      
9 E 1304 1263 493.48      
10 E 1120 1085 31.22      
10 E 1120 1085 31.23      
11 E 816 790 13.56      
11 E 816 790 13.57      
12 E 1625i 1574i 5610.63      
12 E 1625i 1574i 5611.98      

Unscaled Zero Point Vibrational Energy (zpe) 10513.0 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 10185.0 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 TPSSh/3-21G
ABC
2.42270 0.62577 0.62577

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.831
N2 0.000 0.000 0.744
H3 0.000 -1.045 -1.144
H4 -0.905 0.523 -1.144
H5 0.905 0.523 -1.144
H6 0.000 1.099 1.069
H7 -0.952 -0.550 1.069
H8 0.952 -0.550 1.069

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.57551.09121.09121.09122.19542.19542.1954
N21.57552.15852.15852.15851.14641.14641.1464
H31.09122.15851.81061.81063.08202.45992.4599
H41.09122.15851.81061.81062.45992.45993.0820
H51.09122.15851.81061.81062.45993.08202.4599
H62.19541.14643.08202.45992.45991.90421.9042
H72.19541.14642.45992.45993.08201.90421.9042
H82.19541.14642.45993.08202.45991.90421.9042

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 106.463 C1 N2 H7 106.463
C1 N2 H8 106.463 N2 C1 H3 106.668
N2 C1 H4 106.668 N2 C1 H5 106.668
H3 C1 H4 112.123 H3 C1 H5 112.123
H4 C1 H5 112.123 H6 N2 H7 112.305
H6 N2 H8 112.305 H7 N2 H8 112.305
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.500      
2 N -0.464      
3 H 0.218      
4 H 0.218      
5 H 0.218      
6 H 0.103      
7 H 0.103      
8 H 0.103      


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 -1.054 1.054
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.872 0.000 0.000
y 0.000 6.873 0.001
z 0.000 0.001 4.724


<r2> (average value of r2) Å2
<r2> 32.379
(<r2>)1/2 5.690