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-95.837598
Energy at 298.15K-95.844390
HF Energy-95.837598
Nuclear repulsion energy47.024454
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 2986 2930 71.72      
2 A1 2481 2434 106.65      
3 A1 1245 1222 174.59      
4 A1 1091 1070 4.53      
5 A1 868 852 28.89      
6 A2 270 265 0.00      
7 E 3089 3031 15.57      
7 E 3089 3031 15.58      
8 E 1790 1756 2096.15      
8 E 1790 1756 2096.34      
9 E 1397 1371 40.98      
9 E 1397 1371 40.98      
10 E 1165 1144 12.06      
10 E 1165 1144 12.06      
11 E 810 795 0.00      
11 E 810 795 0.00      
12 E 778 763 809.37      
12 E 778 763 809.28      

Unscaled Zero Point Vibrational Energy (zpe) 13499.4 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 13247.0 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 LSDA/6-31G**
ABC
2.53973 0.67924 0.67924

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 -0.786
N2 0.000 0.000 0.705
H3 0.000 -1.049 -1.121
H4 -0.908 0.524 -1.121
H5 0.908 0.524 -1.121
H6 0.000 1.046 1.049
H7 -0.906 -0.523 1.049
H8 0.906 -0.523 1.049

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.49121.10091.10091.10092.11302.11302.1130
N21.49122.10522.10522.10521.10171.10171.1017
H31.10092.10521.81691.81693.01642.40952.4095
H41.10092.10521.81691.81692.40952.40953.0164
H51.10092.10521.81691.81692.40953.01642.4095
H62.11301.10173.01642.40952.40951.81251.8125
H72.11301.10172.40952.40953.01641.81251.8125
H82.11301.10172.40953.01642.40951.81251.8125

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 108.223 C1 N2 H7 108.223
C1 N2 H8 108.223 N2 C1 H3 107.666
N2 C1 H4 107.666 N2 C1 H5 107.666
H3 C1 H4 111.215 H3 C1 H5 111.215
H4 C1 H5 111.215 H6 N2 H7 110.690
H6 N2 H8 110.690 H7 N2 H8 110.690
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 -0.344      
2 N -0.277      
3 H 0.145      
4 H 0.145      
5 H 0.145      
6 H 0.062      
7 H 0.062      
8 H 0.062      


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 -0.697 0.697
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.834 0.000 0.000
y 0.000 -16.834 0.000
z 0.000 0.000 -16.531
Traceless
 xyz
x -0.152 0.000 0.000
y 0.000 -0.152 0.000
z 0.000 0.000 0.303
Polar
3z2-r20.606
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 7.363 0.000 0.000
y 0.000 7.363 0.000
z 0.000 0.000 5.642


<r2> (average value of r2) Å2
<r2> 31.294
(<r2>)1/2 5.594