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

using model chemistry: MP2=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at MP2=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-96.066184
Energy at 298.15K-96.073218
HF Energy-95.648944
Nuclear repulsion energy47.306248
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 MP2=FULL/6-31G(2df,p)
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 3145 2956 33.64      
2 A1 2616 2458 68.71      
3 A1 1340 1259 112.86      
4 A1 1142 1074 26.10      
5 A1 881 828 33.08      
6 A2 297 279 0.00      
7 E 3261 3065 10.88      
7 E 3261 3065 10.88      
8 E 2322 2182 727.32      
8 E 2322 2182 727.32      
9 E 1517 1426 7.81      
9 E 1517 1426 7.81      
10 E 1239 1164 5.62      
10 E 1239 1164 5.62      
11 E 1020 958 119.91      
11 E 1020 958 119.91      
12 E 866 814 8.49      
12 E 866 814 8.49      

Unscaled Zero Point Vibrational Energy (zpe) 14933.9 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 14036.4 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 MP2=FULL/6-31G(2df,p)
ABC
2.63018 0.67743 0.67743

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.791
N2 0.000 0.000 0.707
H3 0.000 -1.034 -1.121
H4 -0.895 0.517 -1.121
H5 0.895 0.517 -1.121
H6 0.000 1.025 1.055
H7 -0.888 -0.513 1.055
H8 0.888 -0.513 1.055

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.49851.08511.08511.08512.11172.11172.1117
N21.49852.10032.10032.10031.08261.08261.0826
H31.08512.10031.79061.79062.99572.40712.4071
H41.08512.10031.79061.79062.40712.40712.9957
H51.08512.10031.79061.79062.40712.99572.4071
H62.11171.08262.99572.40712.40711.77581.7758
H72.11171.08262.40712.40712.99571.77581.7758
H82.11171.08262.40712.99572.40711.77581.7758

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 108.726 C1 N2 H7 108.726
C1 N2 H8 108.726 N2 C1 H3 107.693
N2 C1 H4 107.693 N2 C1 H5 107.693
H3 C1 H4 111.189 H3 C1 H5 111.189
H4 C1 H5 111.189 H6 N2 H7 110.206
H6 N2 H8 110.206 H7 N2 H8 110.206
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability