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: HF/daug-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 HF/daug-cc-pVTZ
 hartrees
Energy at 0K-95.749716
Energy at 298.15K-95.756980
HF Energy-95.749716
Nuclear repulsion energy48.277237
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 HF/daug-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 A 3425 3099 4013.03      
2 A 3425 3099 4013.03      
3 A 3418 3092 206.50      
4 A 3310 2995 4.85      
5 A 3310 2995 4.85      
6 A 3217 2910 10.71      
7 A 1706 1544 1081.08      
8 A 1706 1544 1081.08      
9 A 1613 1459 11.75      
10 A 1613 1459 11.75      
11 A 1584 1433 626.91      
12 A 1558 1409 203.36      
13 A 1374 1243 9.86      
14 A 1374 1243 9.86      
15 A 1024 926 45.78      
16 A 965 873 206.40      
17 A 965 873 206.40      
18 A 301 273 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 17945.7 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 16233.7 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 HF/daug-cc-pVTZ
ABC
2.88594 0.68425 0.68425

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.790 0.000 0.000
N2 0.699 0.000 0.000
H3 -1.131 0.019 1.022
H4 -1.131 0.875 -0.527
H5 -1.131 -0.894 -0.494
H6 1.080 -0.018 -0.942
H7 1.080 0.825 0.456
H8 1.080 -0.807 0.486

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7 H8
C11.48881.07721.07721.07722.09342.09342.0934
N21.48882.09582.09582.09581.01631.01631.0163
H31.07722.09581.76961.76962.95702.41972.4197
H41.07722.09581.76961.76962.41972.41972.9570
H51.07722.09581.76961.76962.41972.95702.4197
H62.09341.01632.95702.41972.41971.63231.6323
H72.09341.01632.41972.41972.95701.63231.6323
H82.09341.01632.41972.95702.41971.63231.6323

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 111.989 C1 N2 H7 111.989
C1 N2 H8 111.989 N2 C1 H3 108.464
N2 C1 H4 108.464 N2 C1 H5 108.464
H3 C1 H4 110.459 H3 C1 H5 110.459
H4 C1 H5 110.459 H6 N2 H7 106.840
H6 N2 H8 106.840 H7 N2 H8 106.840
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -2.011      
2 N 0.102      
3 H 0.709      
4 H 0.709      
5 H 0.709      
6 H -0.072      
7 H -0.072      
8 H -0.072      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -4.175 0.000 0.000 4.175
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.496 0.000 0.000
y 0.000 -27.007 0.000
z 0.000 0.000 -27.007
Traceless
 xyz
x -1.489 0.000 0.000
y 0.000 0.744 0.000
z 0.000 0.000 0.744
Polar
3z2-r21.489
x2-y2-1.489
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 43.409 0.000 0.000
y 0.000 88.964 0.000
z 0.000 0.000 88.964


<r2> (average value of r2) Å2
<r2> 37.470
(<r2>)1/2 6.121