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 CH2NCH3 (N-methylmethanimine)

using model chemistry: HF/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-23.471470
Energy at 298.15K-23.477100
HF Energy-23.471470
Nuclear repulsion energy40.990234
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/CEP-121G
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' 3338 3046 42.43      
2 A' 3229 2947 49.21      
3 A' 3179 2901 53.06      
4 A' 3120 2847 72.81      
5 A' 1842 1681 23.86      
6 A' 1642 1498 32.13      
7 A' 1613 1472 0.45      
8 A' 1583 1444 3.43      
9 A' 1348 1231 13.83      
10 A' 1219 1112 1.69      
11 A' 1023 934 17.80      
12 A' 489 446 7.19      
13 A" 3258 2973 37.80      
14 A" 1620 1478 6.01      
15 A" 1252 1143 0.54      
16 A" 1193 1088 31.11      
17 A" 743 678 0.50      
18 A" 219 200 12.66      

Unscaled Zero Point Vibrational Energy (zpe) 15954.4 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 14558.4 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 HF/CEP-121G
ABC
1.84536 0.34348 0.30580

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.095 -0.437 0.000
N2 0.000 0.539 0.000
C3 1.208 0.147 0.000
H4 -0.751 -1.472 0.000
H5 -1.713 -0.267 0.875
H6 -1.713 -0.267 -0.875
H7 1.497 -0.902 0.000
H8 2.001 0.876 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6 H7 H8
C11.46672.37651.09141.08441.08442.63413.3631
N21.46671.27042.14682.08562.08562.07792.0292
C32.37651.27042.54193.07753.07751.08781.0772
H41.09142.14682.54191.77281.77282.31973.6180
H51.08442.08563.07751.77281.75053.38723.9832
H61.08442.08563.07751.77281.75053.38723.9832
H72.63412.07791.08782.31973.38723.38721.8482
H83.36312.02921.07723.61803.98323.98321.8482

picture of N-methylmethanimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 120.339 N2 C1 H4 113.302
N2 C1 H5 108.750 N2 C1 H6 108.750
N2 C3 H7 123.377 N2 C3 H8 119.393
H4 C1 H5 109.126 H4 C1 H6 109.126
H5 C1 H6 107.632 H7 C3 H8 117.230
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.389      
2 N -0.040      
3 C -0.300      
4 H 0.118      
5 H 0.173      
6 H 0.173      
7 H 0.112      
8 H 0.154      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.414 -2.000 0.000 2.043
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.091 0.863 0.000
y 0.863 -21.612 0.000
z 0.000 0.000 -20.086
Traceless
 xyz
x 4.758 0.863 0.000
y 0.863 -3.524 0.000
z 0.000 0.000 -1.235
Polar
3z2-r2-2.469
x2-y25.521
xy0.863
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.323 -0.100 0.000
y -0.100 3.855 0.000
z 0.000 0.000 2.951


<r2> (average value of r2) Å2
<r2> 43.073
(<r2>)1/2 6.563