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=FULL/aug-cc-pVTZ

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=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-96.328851
Energy at 298.15K-96.335998
HF Energy-96.181245
Nuclear repulsion energy47.736156
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=FULL/aug-cc-pVTZ
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 3092 2967 68.24      
2 A1 3033 2910 59.47      
3 A1 1421 1363 0.50      
4 A1 1383 1327 611.72      
5 A1 941 903 52.42      
6 A2 273 262 0.00      
7 E 3186 3057 0.38      
7 E 3186 3057 0.38      
8 E 2953 2833 2612.72      
8 E 2953 2833 2614.31      
9 E 1520 1458 139.22      
9 E 1520 1458 139.24      
10 E 1500 1439 12.63      
10 E 1500 1439 12.56      
11 E 1256 1205 0.31      
11 E 1256 1205 0.31      
12 E 891 854 85.86      
12 E 891 854 85.87      

Unscaled Zero Point Vibrational Energy (zpe) 16376.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 15711.7 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=FULL/aug-cc-pVTZ
ABC
2.78499 0.67445 0.67445

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.796
N2 0.000 0.000 0.704
H3 0.000 -1.031 -1.132
H4 -0.892 0.515 -1.132
H5 0.892 0.515 -1.132
H6 0.000 0.970 1.082
H7 -0.840 -0.485 1.082
H8 0.840 -0.485 1.082

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.50051.08391.08391.08392.11392.11392.1139
N21.50052.10562.10562.10561.04061.04061.0406
H31.08392.10561.78501.78502.98382.43012.4301
H41.08392.10561.78501.78502.43012.43012.9838
H51.08392.10561.78501.78502.43012.98382.4301
H62.11391.04062.98382.43012.43011.67921.6792
H72.11391.04062.43012.43012.98381.67921.6792
H82.11391.04062.43012.98382.43011.67921.6792

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 111.301 C1 N2 H7 111.301
C1 N2 H8 111.301 N2 C1 H3 108.042
N2 C1 H4 108.042 N2 C1 H5 108.042
H3 C1 H4 110.862 H3 C1 H5 110.862
H4 C1 H5 110.862 H6 N2 H7 107.582
H6 N2 H8 107.582 H7 N2 H8 107.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability