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: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-133.889281
Energy at 298.15K-133.894806
HF Energy-133.889281
Nuclear repulsion energy72.157993
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 B3PW91/6-31G*
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' 3167 3030 36.45      
2 A' 3098 2964 26.88      
3 A' 3017 2887 65.06      
4 A' 2994 2865 52.13      
5 A' 1773 1696 20.24      
6 A' 1533 1466 20.28      
7 A' 1501 1436 2.26      
8 A' 1458 1395 1.75      
9 A' 1252 1198 14.71      
10 A' 1137 1088 0.58      
11 A' 992 949 13.75      
12 A' 476 455 5.83      
13 A" 3123 2988 18.74      
14 A" 1502 1437 4.54      
15 A" 1153 1103 0.09      
16 A" 1058 1013 19.25      
17 A" 701 671 1.23      
18 A" 226 216 8.69      

Unscaled Zero Point Vibrational Energy (zpe) 15081.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 14428.1 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 B3PW91/6-31G*
ABC
1.77369 0.35653 0.31413

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.074 -0.415 0.000
N2 0.000 0.554 0.000
C3 1.187 0.116 0.000
H4 -0.736 -1.465 0.000
H5 -1.705 -0.245 0.880
H6 -1.705 -0.245 -0.880
H7 1.448 -0.955 0.000
H8 2.018 0.824 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6 H7 H8
C11.44632.32181.10331.09651.09652.57873.3307
N21.44631.26532.14932.07872.07872.09182.0360
C32.32181.26532.48913.04433.04431.10251.0923
H41.10332.14932.48911.78961.78962.24233.5812
H51.09652.07873.04431.78961.76033.34963.9724
H61.09652.07873.04431.78961.76033.34963.9724
H72.57872.09181.10252.24233.34963.34961.8690
H83.33072.03601.09233.58123.97243.97241.8690

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 117.644 N2 C1 H4 114.247
N2 C1 H5 108.894 N2 C1 H6 108.894
N2 C3 H7 123.973 N2 C3 H8 119.264
H4 C1 H5 108.882 H4 C1 H6 108.882
H5 C1 H6 106.780 H7 C3 H8 116.763
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.384      
2 N -0.287      
3 C -0.163      
4 H 0.146      
5 H 0.189      
6 H 0.189      
7 H 0.139      
8 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.311 -1.444 0.000 1.477
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.081 0.646 0.000
y 0.646 -20.611 0.000
z 0.000 0.000 -19.454
Traceless
 xyz
x 3.951 0.646 0.000
y 0.646 -2.844 0.000
z 0.000 0.000 -1.108
Polar
3z2-r2-2.216
x2-y24.530
xy0.646
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.002 0.078 0.000
y 0.078 3.982 0.000
z 0.000 0.000 2.682


<r2> (average value of r2) Å2
<r2> 48.253
(<r2>)1/2 6.946