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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-96.172472
Energy at 298.15K-96.167998
HF Energy-95.630324
Nuclear repulsion energy47.593039
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 CBS-Q
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 3237 3237 33.71      
2 A1 2739 2739 48.52      
3 A1 1498 1498 48.19      
4 A1 1268 1268 35.12      
5 A1 977 977 58.23      
6 A2 308 308 0.00      
7 E 3334 3334 11.24      
7 E 3334 3334 11.24      
8 E 1627 1627 12.38      
8 E 1627 1627 12.38      
9 E 1462 1462 1106.23      
9 E 1462 1462 1106.23      
10 E 1354 1354 62.94      
10 E 1354 1354 62.94      
11 E 961 961 13.54      
11 E 961 961 13.54      
12 E 1802i 1802i 20906.90      
12 E 1802i 1802i 20906.90      

Unscaled Zero Point Vibrational Energy (zpe) 11948.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11948.4 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 CBS-Q
ABC
1.51165 0.53426 0.45691

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.788
N2 0.000 0.000 0.702
H3 0.000 -1.027 -1.129
H4 -0.890 0.514 -1.129
H5 0.890 0.514 -1.129
H6 0.000 1.003 1.065
H7 -0.869 -0.502 1.065
H8 0.869 -0.502 1.065

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.49021.08231.08231.08232.10712.10712.1071
N21.49022.09972.09972.09971.06701.06701.0670
H31.08232.09971.77921.77922.98952.41752.4175
H41.08232.09971.77921.77922.41752.41752.9895
H51.08232.09971.77921.77922.41752.98952.4175
H62.10711.06702.98952.41752.41751.73811.7381
H72.10711.06702.41752.41752.98951.73811.7381
H82.10711.06702.41752.98952.41751.73811.7381

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 109.870 C1 N2 H7 109.870
C1 N2 H8 109.870 N2 C1 H3 108.367
N2 C1 H4 108.367 N2 C1 H5 108.367
H3 C1 H4 110.553 H3 C1 H5 110.553
H4 C1 H5 110.552 H6 N2 H7 109.070
H6 N2 H8 109.070 H7 N2 H8 109.070
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability