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: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-95.743335
Energy at 298.15K 
HF Energy-95.743335
Nuclear repulsion energy45.021166
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 BLYP/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 3007 2990 29.20      
2 A1 2145 2133 160.51      
3 A1 1212 1205 190.01      
4 A1 1028 1022 0.70      
5 A1 344 342 37.09      
6 A2 224 222 0.00      
7 E 3105 3088 22.65      
7 E 3105 3088 22.66      
8 E 1488 1480 102.98      
8 E 1488 1480 102.93      
9 E 1441 1433 704.87      
9 E 1441 1433 705.00      
10 E 1081 1075 1.10      
10 E 1081 1075 1.10      
11 E 792 787 34.35      
11 E 792 787 34.35      
12 E 556i 553i 1866.14      
12 E 556i 553i 1865.91      

Unscaled Zero Point Vibrational Energy (zpe) 11330.5 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 11268.2 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 BLYP/3-21G
ABC
2.43205 0.60195 0.60195

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.856
N2 0.000 0.000 0.754
H3 0.000 -1.054 -1.159
H4 -0.912 0.527 -1.159
H5 0.912 0.527 -1.159
H6 0.000 1.087 1.110
H7 -0.942 -0.544 1.110
H8 0.942 -0.544 1.110

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.61011.09631.09631.09632.24662.24662.2466
N21.61012.18392.18392.18391.14421.14421.1442
H31.09632.18391.82491.82493.11952.50882.5088
H41.09632.18391.82491.82492.50882.50883.1195
H51.09632.18391.82491.82492.50883.11952.5088
H62.24661.14423.11952.50882.50881.88351.8835
H72.24661.14422.50882.50883.11951.88351.8835
H82.24661.14422.50883.11952.50881.88351.8835

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 108.117 C1 N2 H7 108.117
C1 N2 H8 108.117 N2 C1 H3 106.040
N2 C1 H4 106.040 N2 C1 H5 106.040
H3 C1 H4 112.673 H3 C1 H5 112.673
H4 C1 H5 112.673 H6 N2 H7 110.790
H6 N2 H8 110.790 H7 N2 H8 110.790
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.452      
2 N -0.414      
3 H 0.191      
4 H 0.191      
5 H 0.191      
6 H 0.097      
7 H 0.097      
8 H 0.097      


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 -0.805 0.805
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.991 0.000 0.000
y 0.000 -15.991 0.000
z 0.000 0.000 -16.324
Traceless
 xyz
x 0.166 0.000 0.000
y 0.000 0.166 0.000
z 0.000 0.000 -0.333
Polar
3z2-r2-0.665
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 5.804 0.000 0.000
y 0.000 5.805 0.000
z 0.000 0.000 5.147


<r2> (average value of r2) Å2
<r2> 33.036
(<r2>)1/2 5.748