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: wB97X-D/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at wB97X-D/CEP-31G*
 hartrees
Energy at 0K-19.005865
Energy at 298.15K 
HF Energy-19.005865
Nuclear repulsion energy 
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 wB97X-D/CEP-31G*
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 3100 3100 47.37      
2 A1 2452 2452 503.78      
3 A1 1296 1296 53.50      
4 A1 1133 1133 4.71      
5 A1 467 467 108.97      
6 A2 249 249 0.00      
7 E 3189 3189 6.12      
7 E 3189 3189 6.20      
8 E 1520 1520 996.26      
8 E 1520 1520 996.59      
9 E 1465 1465 453.76      
9 E 1465 1465 454.25      
10 E 1148 1148 55.11      
10 E 1148 1148 55.20      
11 E 822 822 3.34      
11 E 822 822 3.36      
12 E 664i 664i 2950.53      
12 E 664i 664i 2952.39      

Unscaled Zero Point Vibrational Energy (zpe) 11828.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11828.9 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 wB97X-D/CEP-31G*
ABC
2.57123 0.63611 0.63611

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.818
N2 0.000 0.000 0.729
H3 0.000 -1.043 -1.163
H4 -0.903 0.521 -1.163
H5 0.903 0.521 -1.163
H6 0.000 1.040 1.099
H7 -0.900 -0.520 1.099
H8 0.900 -0.520 1.099

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.54731.09831.09831.09832.18162.18162.1816
N21.54732.16052.16052.16051.10381.10381.1038
H31.09832.16051.80611.80613.07522.49082.4908
H41.09832.16051.80611.80612.49082.49083.0752
H51.09832.16051.80611.80612.49083.07522.4908
H62.18161.10383.07522.49082.49081.80101.8010
H72.18161.10382.49082.49083.07521.80101.8010
H82.18161.10382.49083.07522.49081.80101.8010

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 109.611 C1 N2 H7 109.611
C1 N2 H8 109.611 N2 C1 H3 108.302
N2 C1 H4 108.302 N2 C1 H5 108.302
H3 C1 H4 110.615 H3 C1 H5 110.615
H4 C1 H5 110.615 H6 N2 H7 109.331
H6 N2 H8 109.331 H7 N2 H8 109.331
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.728      
2 N -0.026      
3 H 0.193      
4 H 0.193      
5 H 0.193      
6 H 0.058      
7 H 0.058      
8 H 0.058      


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 -0.379 0.379
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.342 0.000 0.000
y 0.000 -16.342 0.000
z 0.000 0.000 -16.597
Traceless
 xyz
x 0.127 0.000 0.000
y 0.000 0.127 0.000
z 0.000 0.000 -0.255
Polar
3z2-r2-0.509
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 6.484 0.000 0.000
y 0.000 6.483 0.003
z 0.000 0.003 7.078


<r2> (average value of r2) Å2
<r2> 29.787
(<r2>)1/2 5.458