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: TPSSh/TZVP

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/TZVP
 hartrees
Energy at 0K-96.389670
Energy at 298.15K-96.396749
HF Energy-96.389670
Nuclear repulsion energy47.250030
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/TZVP
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 3056 2945 81.78      
2 A1 2716 2617 2.90      
3 A1 1365 1316 63.34      
4 A1 1242 1197 278.47      
5 A1 875 843 39.86      
6 A2 279 268 0.00      
7 E 3151 3037 6.36      
7 E 3151 3037 6.29      
8 E 2284 2201 5454.23      
8 E 2284 2201 5461.80      
9 E 1495 1440 2.32      
9 E 1495 1440 2.34      
10 E 1329 1281 11.12      
10 E 1329 1281 11.20      
11 E 1189 1146 177.51      
11 E 1189 1146 177.65      
12 E 862 830 108.49      
12 E 862 830 108.65      

Unscaled Zero Point Vibrational Energy (zpe) 15075.6 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 14528.4 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 TPSSh/TZVP
ABC
2.69279 0.66570 0.66570

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.802
N2 0.000 0.000 0.710
H3 0.000 -1.037 -1.133
H4 -0.898 0.519 -1.133
H5 0.898 0.519 -1.133
H6 0.000 0.997 1.081
H7 -0.864 -0.499 1.081
H8 0.864 -0.499 1.081

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.51231.08881.08881.08882.13092.13092.1309
N21.51232.11462.11462.11461.06391.06391.0639
H31.08882.11461.79701.79703.00652.43632.4363
H41.08882.11461.79701.79702.43632.43633.0065
H51.08882.11461.79701.79702.43633.00652.4363
H62.13091.06393.00652.43632.43631.72701.7270
H72.13091.06392.43632.43633.00651.72701.7270
H82.13091.06392.43633.00652.43631.72701.7270

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 110.406 C1 N2 H7 110.406
C1 N2 H8 110.406 N2 C1 H3 107.657
N2 C1 H4 107.657 N2 C1 H5 107.657
H3 C1 H4 111.223 H3 C1 H5 111.223
H4 C1 H5 111.223 H6 N2 H7 108.521
H6 N2 H8 108.521 H7 N2 H8 108.521
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.126      
2 N 0.341      
3 H 0.079      
4 H 0.079      
5 H 0.079      
6 H -0.150      
7 H -0.150      
8 H -0.150      


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 -1.597 1.597
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 17.229 0.000 0.000
y 0.000 17.256 -0.005
z 0.000 -0.005 8.864


<r2> (average value of r2) Å2
<r2> 32.706
(<r2>)1/2 5.719