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

using model chemistry: HF/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at HF/cc-pVTZ
 hartrees
Energy at 0K-95.716444
Energy at 298.15K-95.723712
HF Energy-95.716444
Nuclear repulsion energy48.121698
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 HF/cc-pVTZ
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 3210 2922 42.47      
2 A1 3163 2878 4.89      
3 A1 1531 1393 19.16      
4 A1 1427 1298 344.07      
5 A1 1025 933 51.52      
6 A2 318 290 0.00      
7 E 3297 3001 0.22      
7 E 3297 3001 0.22      
8 E 2800 2548 7911.42      
8 E 2800 2548 7911.42      
9 E 1613 1468 44.20      
9 E 1613 1468 44.20      
10 E 1589 1446 155.18      
10 E 1589 1446 155.18      
11 E 1348 1227 27.55      
11 E 1348 1227 27.55      
12 E 937 853 255.64      
12 E 937 853 255.64      

Unscaled Zero Point Vibrational Energy (zpe) 16920.8 cm-1
Scaled (by 0.9101) Zero Point Vibrational Energy (zpe) 15399.6 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 HF/cc-pVTZ
ABC
2.83666 0.68549 0.68549

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.788
N2 0.000 0.000 0.697
H3 0.000 -1.023 -1.128
H4 -0.886 0.511 -1.128
H5 0.886 0.511 -1.128
H6 0.000 0.959 1.079
H7 -0.830 -0.479 1.079
H8 0.830 -0.479 1.079

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.48521.07781.07781.07782.09872.09872.0987
N21.48522.09192.09192.09191.03191.03191.0319
H31.07782.09191.77181.77182.96572.41932.4193
H41.07782.09191.77181.77182.41932.41932.9657
H51.07782.09191.77181.77182.41932.96572.4193
H62.09871.03192.96572.41932.41931.66051.6605
H72.09871.03192.41932.41932.96571.66051.6605
H82.09871.03192.41932.96572.41931.66051.6605

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 111.710 C1 N2 H7 111.710
C1 N2 H8 111.710 N2 C1 H3 108.361
N2 C1 H4 108.361 N2 C1 H5 108.361
H3 C1 H4 110.558 H3 C1 H5 110.558
H4 C1 H5 110.558 H6 N2 H7 107.143
H6 N2 H8 107.143 H7 N2 H8 107.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.067      
2 N 0.510      
3 H 0.076      
4 H 0.076      
5 H 0.076      
6 H -0.224      
7 H -0.224      
8 H -0.224      


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 -1.949 1.949
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.261 0.000 0.000
y 0.000 -19.261 0.000
z 0.000 0.000 -18.723
Traceless
 xyz
x -0.269 0.000 0.000
y 0.000 -0.269 0.000
z 0.000 0.000 0.538
Polar
3z2-r21.076
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 21.635 0.000 0.000
y 0.000 21.635 0.000
z 0.000 0.000 9.012


<r2> (average value of r2) Å2
<r2> 32.249
(<r2>)1/2 5.679