return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: LSDA/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 LSDA/6-31G
 hartrees
Energy at 0K-95.805572
Energy at 298.15K-95.812481
HF Energy-95.805572
Nuclear repulsion energy46.688941
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 LSDA/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 3001 2940 63.21      
2 A1 2472 2422 102.64      
3 A1 1297 1270 180.22      
4 A1 1122 1100 30.09      
5 A1 863 845 11.46      
6 A2 254 249 0.00      
7 E 3113 3049 18.39      
7 E 3113 3049 18.40      
8 E 1838 1801 2252.19      
8 E 1838 1801 2252.41      
9 E 1439 1410 28.29      
9 E 1439 1410 28.29      
10 E 1180 1156 4.38      
10 E 1180 1156 4.38      
11 E 1009 989 378.42      
11 E 1009 989 378.39      
12 E 816 799 114.08      
12 E 816 799 114.11      

Unscaled Zero Point Vibrational Energy (zpe) 13898.5 cm-1
Scaled (by 0.9797) Zero Point Vibrational Energy (zpe) 13616.4 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 LSDA/6-31G
ABC
2.54727 0.66319 0.66319

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.799
N2 0.000 0.000 0.712
H3 0.000 -1.049 -1.134
H4 -0.908 0.524 -1.134
H5 0.908 0.524 -1.134
H6 0.000 1.044 1.071
H7 -0.904 -0.522 1.071
H8 0.904 -0.522 1.071

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.51061.10081.10081.10082.14202.14202.1420
N21.51062.12272.12272.12271.10401.10401.1040
H31.10082.12271.81611.81613.04012.44112.4411
H41.10082.12271.81611.81612.44112.44113.0401
H51.10082.12271.81611.81612.44113.04012.4411
H62.14201.10403.04012.44112.44111.80781.8078
H72.14201.10402.44112.44113.04011.80781.8078
H82.14201.10402.44113.04012.44111.80781.8078

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 109.022 C1 N2 H7 109.022
C1 N2 H8 109.022 N2 C1 H3 107.723
N2 C1 H4 107.723 N2 C1 H5 107.723
H3 C1 H4 111.161 H3 C1 H5 111.161
H4 C1 H5 111.161 H6 N2 H7 109.916
H6 N2 H8 109.916 H7 N2 H8 109.916
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.401      
2 N -0.456      
3 H 0.175      
4 H 0.175      
5 H 0.175      
6 H 0.110      
7 H 0.110      
8 H 0.110      


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 -0.778 0.778
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.865 0.000 0.000
y 0.000 -16.865 0.000
z 0.000 0.000 -16.622
Traceless
 xyz
x -0.122 0.000 0.000
y 0.000 -0.122 0.000
z 0.000 0.000 0.243
Polar
3z2-r20.487
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 7.272 0.000 0.000
y 0.000 7.272 0.000
z 0.000 0.000 5.552


<r2> (average value of r2) Å2
<r2> 31.727
(<r2>)1/2 5.633