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

using model chemistry: CISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at CISD/6-311G*
 hartrees
Energy at 0K-96.017450
Energy at 298.15K-96.024645
HF Energy-95.687136
Nuclear repulsion energy47.658295
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 CISD/6-311G*
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 3143 2909 44.51      
2 A1 2943 2724 25.28      
3 A1 1440 1333 50.34      
4 A1 1367 1265 222.91      
5 A1 987 913 45.99      
6 A2 304 281 0.00      
7 E 3242 3000 2.81      
7 E 3242 3000 2.81      
8 E 2570 2378 4306.96      
8 E 2570 2378 4306.98      
9 E 1542 1427 0.99      
9 E 1542 1427 0.99      
10 E 1495 1384 6.99      
10 E 1495 1384 6.99      
11 E 1278 1183 40.03      
11 E 1278 1183 40.04      
12 E 901 834 138.34      
12 E 901 834 138.34      

Unscaled Zero Point Vibrational Energy (zpe) 16121.1 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 14916.9 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 CISD/6-311G*
ABC
2.74578 0.67741 0.67741

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.792
N2 0.000 0.000 0.702
H3 0.000 -1.032 -1.131
H4 -0.894 0.516 -1.131
H5 0.894 0.516 -1.131
H6 0.000 0.983 1.077
H7 -0.851 -0.491 1.077
H8 0.851 -0.491 1.077

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.49481.08591.08591.08592.11202.11202.1120
N21.49482.10372.10372.10371.05181.05181.0518
H31.08592.10371.78711.78712.98892.42722.4272
H41.08592.10371.78711.78712.42722.42722.9889
H51.08592.10371.78711.78712.42722.98892.4272
H62.11201.05182.98892.42722.42721.70231.7023
H72.11201.05182.42722.42722.98891.70231.7023
H82.11201.05182.42722.98892.42721.70231.7023

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 110.867 C1 N2 H7 110.867
C1 N2 H8 110.867 N2 C1 H3 108.161
N2 C1 H4 108.161 N2 C1 H5 108.161
H3 C1 H4 110.749 H3 C1 H5 110.749
H4 C1 H5 110.749 H6 N2 H7 108.040
H6 N2 H8 108.040 H7 N2 H8 108.040
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability