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: TPSSh/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/3-21G*
 hartrees
Energy at 0K-94.100892
Energy at 298.15K 
HF Energy-94.100892
Nuclear repulsion energy32.559341
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 TPSSh/3-21G*
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' 3240 3129 23.00      
2 A' 3128 3021 38.15      
3 A' 3006 2903 55.36      
4 A' 1678 1620 6.24      
5 A' 1520 1468 0.91      
6 A' 1372 1325 62.85      
7 A' 1090 1053 47.23      
8 A" 1187 1147 55.10      
9 A" 1102 1064 23.52      

Unscaled Zero Point Vibrational Energy (zpe) 8661.5 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 8364.4 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 TPSSh/3-21G*
ABC
6.61971 1.13008 0.96529

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.055 0.593 0.000
N2 0.055 -0.691 0.000
H3 -0.825 1.249 0.000
H4 1.016 1.109 0.000
H5 -0.911 -1.083 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5
C11.28381.09791.09021.9347
N21.28382.12982.04001.0429
H31.09792.12981.84642.3331
H41.09022.04001.84642.9185
H51.93471.04292.33312.9185

picture of Methanimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H5 112.100 N2 C1 H3 126.650
N2 C1 H4 118.250 H3 C1 H4 115.100
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.163      
2 N -0.494      
3 H 0.178      
4 H 0.214      
5 H 0.264      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.511 1.277 0.000 1.978
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.384 0.337 0.000
y 0.337 3.489 0.000
z 0.000 0.000 0.893


<r2> (average value of r2) Å2
<r2> 19.778
(<r2>)1/2 4.447