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

using model chemistry: MP2=FULL/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-96.192673
Energy at 298.15K-96.199876
HF Energy-95.736587
Nuclear repulsion energy47.929313
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/6-311+G(3df,2p)
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 3122 2943 50.50      
2 A1 3037 2863 22.07      
3 A1 1425 1344 16.98      
4 A1 1344 1267 506.24      
5 A1 993 936 56.63      
6 A2 312 295 0.00      
7 E 3231 3046 0.16      
7 E 3231 3046 0.16      
8 E 2987 2816 1381.08      
8 E 2987 2816 1381.08      
9 E 1522 1435 60.44      
9 E 1522 1435 60.44      
10 E 1514 1427 2.07      
10 E 1514 1427 2.07      
11 E 1259 1187 0.69      
11 E 1259 1187 0.69      
12 E 892 841 85.53      
12 E 892 841 85.53      

Unscaled Zero Point Vibrational Energy (zpe) 16522.0 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 15575.2 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 MP2=FULL/6-311+G(3df,2p)
ABC
2.78942 0.68338 0.68338

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.789
N2 0.000 0.000 0.698
H3 0.000 -1.029 -1.128
H4 -0.891 0.514 -1.128
H5 0.891 0.514 -1.128
H6 0.000 0.970 1.076
H7 -0.840 -0.485 1.076
H8 0.840 -0.485 1.076

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.48731.08331.08331.08332.10192.10192.1019
N21.48732.09632.09632.09631.04051.04051.0405
H31.08332.09631.78211.78212.97522.42052.4205
H41.08332.09631.78211.78212.42052.42052.9752
H51.08332.09631.78211.78212.42052.97522.4205
H62.10191.04052.97522.42052.42051.67951.6795
H72.10191.04052.42052.42052.97521.67951.6795
H82.10191.04052.42052.97522.42051.67951.6795

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 111.275 C1 N2 H7 111.275
C1 N2 H8 111.275 N2 C1 H3 108.241
N2 C1 H4 108.241 N2 C1 H5 108.241
H3 C1 H4 110.673 H3 C1 H5 110.673
H4 C1 H5 110.673 H6 N2 H7 107.609
H6 N2 H8 107.609 H7 N2 H8 107.609
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability