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 CH2NH (Methanimine)

using model chemistry: HF/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-31G*
 hartrees
Energy at 0K-94.028462
Energy at 298.15K-94.031480
HF Energy-94.028462
Nuclear repulsion energy33.364747
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/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3714 3337 0.38      
2 A' 3349 3009 46.15      
3 A' 3251 2921 42.49      
4 A' 1900 1707 39.64      
5 A' 1628 1463 10.99      
6 A' 1498 1346 50.50      
7 A' 1162 1044 40.81      
8 A" 1273 1144 62.17      
9 A" 1223 1099 10.74      

Unscaled Zero Point Vibrational Energy (zpe) 9498.7 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 8534.6 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/6-31G*
ABC
6.80499 1.19327 1.01524

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.055 0.577 0.000
N2 0.055 -0.674 0.000
H3 -0.836 1.194 0.000
H4 0.997 1.104 0.000
H5 -0.881 -1.042 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5
C11.25051.08401.07951.8704
N21.25052.06912.01211.0062
H31.08402.06911.83542.2365
H41.07952.01211.83542.8523
H51.87041.00622.23652.8523

picture of Methanimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H5 111.501 N2 C1 H3 124.684
N2 C1 H4 119.255 H3 C1 H4 116.061
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.105      
2 N -0.559      
3 H 0.154      
4 H 0.176      
5 H 0.333      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.556 1.617 0.000 2.244
CHELPG -1.530 1.572 0.000 2.194
AIM -0.016 -1.569 0.000 1.569
ESP -1.546 1.602 0.000 2.226


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.578 2.123 -0.001
y 2.123 -12.495 -0.009
z -0.001 -0.009 -13.469
Traceless
 xyz
x 1.404 2.123 -0.001
y 2.123 0.028 -0.009
z -0.001 -0.009 -1.432
Polar
3z2-r2-2.864
x2-y20.918
xy2.123
xz-0.001
yz-0.009


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.387 0.275 -0.000
y 0.275 3.655 0.000
z -0.000 0.000 1.121


<r2> (average value of r2) Å2
<r2> 19.229
(<r2>)1/2 4.385