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All results from a given calculation for CH2NCH3 (N-methylmethanimine)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G4
 hartrees
Energy at 0K-133.845871
Energy at 298.15K-133.841038
HF Energy-133.952417
Nuclear repulsion energy72.158788
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 B3LYP/6-31G(2df,p)
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' 3132 3022 31.69      
2 A' 3068 2961 26.13      
3 A' 2989 2884 62.29      
4 A' 2971 2867 43.48      
5 A' 1753 1691 19.06      
6 A' 1511 1458 17.34      
7 A' 1480 1428 2.96      
8 A' 1437 1387 3.18      
9 A' 1242 1199 16.90      
10 A' 1126 1087 0.37      
11 A' 971 937 12.66      
12 A' 475 458 6.30      
13 A" 3088 2980 17.56      
14 A" 1478 1426 3.41      
15 A" 1148 1108 0.38      
16 A" 1063 1025 14.80      
17 A" 700 676 0.96      
18 A" 223 216 7.22      

Unscaled Zero Point Vibrational Energy (zpe) 14927.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 14404.5 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 B3LYP/6-31G(2df,p)
ABC
1.78323 0.35550 0.31359

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.074 -0.420 0.000
N2 0.000 0.553 0.000
C3 1.187 0.123 0.000
H4 -0.729 -1.467 0.000
H5 -1.707 -0.254 0.879
H6 -1.707 -0.254 -0.879
H7 1.451 -0.946 0.000
H8 2.016 0.833 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6 H7 H8
C11.44962.32561.10201.09571.09572.57983.3343
N21.44961.26262.14772.08302.08302.08662.0349
C32.32561.26262.49003.04793.04791.10101.0911
H41.10202.14772.49001.78831.78832.24223.5810
H51.09572.08303.04791.78831.75853.35053.9765
H61.09572.08303.04791.78831.75853.35053.9765
H72.57982.08661.10102.24223.35053.35051.8659
H83.33432.03491.09113.58103.97653.97651.8659

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 118.409 N2 C1 H4 113.864
N2 C1 H5 109.045 N2 C1 H6 109.045
N2 C3 H7 123.843 N2 C3 H8 119.669
H4 C1 H5 108.914 H4 C1 H6 108.914
H5 C1 H6 106.823 H7 C3 H8 116.488
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.310      
2 N -0.076      
3 C -0.194      
4 H 0.099      
5 H 0.134      
6 H 0.134      
7 H 0.094      
8 H 0.119      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.318 -1.320 0.000 1.358
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 48.341
(<r2>)1/2 6.953