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: mPW1PW91/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-94.639894
Energy at 298.15K 
HF Energy-94.639894
Nuclear repulsion energy33.080780
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 mPW1PW91/aug-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' 3481 3335 0.80      
2 A' 3138 3006 27.79      
3 A' 3041 2914 47.56      
4 A' 1732 1660 23.76      
5 A' 1492 1430 7.48      
6 A' 1370 1312 41.46      
7 A' 1072 1027 36.07      
8 A" 1170 1121 43.51      
9 A" 1106 1059 18.17      

Unscaled Zero Point Vibrational Energy (zpe) 8800.6 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 8431.9 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 mPW1PW91/aug-cc-pVTZ
ABC
6.63960 1.17605 0.99909

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.056 0.582 0.000
N2 0.056 -0.679 0.000
H3 -0.844 1.203 0.000
H4 1.010 1.107 0.000
H5 -0.894 -1.046 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5
C11.26071.09331.08911.8847
N21.26072.08602.02501.0184
H31.09332.08601.85582.2498
H41.08912.02501.85582.8743
H51.88471.01842.24982.8743

picture of Methanimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H5 111.132 N2 C1 H3 124.639
N2 C1 H4 118.860 H3 C1 H4 116.501
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.358      
2 N -0.448      
3 H 0.329      
4 H 0.335      
5 H 0.143      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.362 1.482 0.000 2.013
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.695 2.060 0.000
y 2.060 -12.724 0.000
z 0.000 0.000 -13.667
Traceless
 xyz
x 1.501 2.060 0.000
y 2.060 -0.043 0.000
z 0.000 0.000 -1.458
Polar
3z2-r2-2.915
x2-y21.030
xy2.060
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.240 0.108 0.000
y 0.108 4.306 0.000
z 0.000 0.000 2.516


<r2> (average value of r2) Å2
<r2> 19.526
(<r2>)1/2 4.419