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: PBE1PBE/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 PBE1PBE/cc-pVTZ
 hartrees
Energy at 0K-96.267066
Energy at 298.15K-96.274173
HF Energy-96.267066
Nuclear repulsion energy47.628223
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 PBE1PBE/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 3068 2949 83.87      
2 A1 2839 2728 28.75      
3 A1 1362 1309 72.40      
4 A1 1245 1196 247.32      
5 A1 948 911 48.19      
6 A2 281 270 0.00      
7 E 3163 3040 4.42      
7 E 3163 3040 4.43      
8 E 2439 2344 4925.72      
8 E 2439 2344 4927.21      
9 E 1468 1411 1.28      
9 E 1468 1411 1.28      
10 E 1363 1310 0.00      
10 E 1363 1310 0.00      
11 E 1212 1165 68.07      
11 E 1212 1165 68.13      
12 E 857 824 142.97      
12 E 857 824 143.05      

Unscaled Zero Point Vibrational Energy (zpe) 15374.4 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 14774.8 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 PBE1PBE/cc-pVTZ
ABC
2.72077 0.67967 0.67967

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ

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 0.701
H3 0.000 -1.035 -1.127
H4 -0.897 0.518 -1.127
H5 0.897 0.518 -1.127
H6 0.000 0.989 1.073
H7 -0.856 -0.494 1.073
H8 0.856 -0.494 1.073

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.49181.08831.08831.08832.11012.11012.1101
N21.49182.10052.10052.10051.05651.05651.0565
H31.08832.10051.79301.79302.98942.42192.4219
H41.08832.10051.79301.79302.42192.42192.9894
H51.08832.10051.79301.79302.42192.98942.4219
H62.11011.05652.98942.42192.42191.71261.7126
H72.11011.05652.42192.42192.98941.71261.7126
H82.11011.05652.42192.98942.42191.71261.7126

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 110.634 C1 N2 H7 110.634
C1 N2 H8 110.634 N2 C1 H3 107.977
N2 C1 H4 107.977 N2 C1 H5 107.977
H3 C1 H4 110.923 H3 C1 H5 110.923
H4 C1 H5 110.923 H6 N2 H7 108.284
H6 N2 H8 108.284 H7 N2 H8 108.284
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.139      
2 N 0.392      
3 H 0.080      
4 H 0.080      
5 H 0.080      
6 H -0.164      
7 H -0.164      
8 H -0.164      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.427 1.427
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.853 0.000 0.000
y 0.000 -18.853 0.000
z 0.000 0.000 -17.978
Traceless
 xyz
x -0.438 0.000 0.000
y 0.000 -0.438 0.000
z 0.000 0.000 0.875
Polar
3z2-r21.750
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 16.888 0.000 0.000
y 0.000 16.894 -0.002
z 0.000 -0.002 9.504


<r2> (average value of r2) Å2
<r2> 32.197
(<r2>)1/2 5.674