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: B2PLYP=FULLultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at B2PLYP=FULLultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-96.271156
Energy at 298.15K 
HF Energy-96.152738
Nuclear repulsion energy47.498624
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 B2PLYP=FULLultrafine/aug-cc-pVDZ
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 3094 2978 69.29      
2 A1 3011 2898 46.74      
3 A1 1395 1343 6.44      
4 A1 1362 1310 597.61      
5 A1 944 909 54.88      
6 A2 288 277 0.00      
7 E 3201 3081 0.10      
7 E 3201 3081 0.10      
8 E 2948 2837 2619.72      
8 E 2948 2837 2619.40      
9 E 1494 1438 126.03      
9 E 1494 1438 126.05      
10 E 1473 1417 7.57      
10 E 1473 1417 7.58      
11 E 1241 1194 0.67      
11 E 1241 1194 0.67      
12 E 887 853 81.46      
12 E 887 853 81.46      

Unscaled Zero Point Vibrational Energy (zpe) 16291.3 cm-1
Scaled (by 0.9623) Zero Point Vibrational Energy (zpe) 15677.1 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 B2PLYP=FULLultrafine/aug-cc-pVDZ
ABC
2.74678 0.66936 0.66936

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/aug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.799
N2 0.000 0.000 0.706
H3 0.000 -1.040 -1.136
H4 -0.901 0.520 -1.136
H5 0.901 0.520 -1.136
H6 0.000 0.974 1.088
H7 -0.843 -0.487 1.088
H8 0.843 -0.487 1.088

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.50491.09341.09341.09342.12332.12332.1233
N21.50492.11512.11512.11511.04581.04581.0458
H31.09342.11511.80171.80173.00002.44172.4417
H41.09342.11511.80171.80172.44172.44173.0000
H51.09342.11511.80171.80172.44173.00002.4417
H62.12331.04583.00002.44172.44171.68621.6862
H72.12331.04582.44172.44173.00001.68621.6862
H82.12331.04582.44173.00002.44171.68621.6862

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 111.425 C1 N2 H7 111.425
C1 N2 H8 111.425 N2 C1 H3 107.939
N2 C1 H4 107.939 N2 C1 H5 107.939
H3 C1 H4 110.959 H3 C1 H5 110.959
H4 C1 H5 110.959 H6 N2 H7 107.449
H6 N2 H8 107.449 H7 N2 H8 107.449
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability