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 NHCHNH2 (aminomethanimine)

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-148.237766
Energy at 298.15K-148.243160
Nuclear repulsion energy72.630534
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/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' 3920 3538 51.65      
2 A' 3787 3418 44.91      
3 A' 3657 3301 0.76      
4 A' 3234 2919 59.43      
5 A' 1874 1691 293.87      
6 A' 1794 1620 40.05      
7 A' 1543 1392 66.35      
8 A' 1435 1295 49.12      
9 A' 1181 1066 114.64      
10 A' 1146 1035 101.34      
11 A' 584 527 21.04      
12 A" 1222 1103 7.71      
13 A" 892 805 41.62      
14 A" 622 562 306.14      
15 A" 343 310 219.32      

Unscaled Zero Point Vibrational Energy (zpe) 13616.7 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 12290.5 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 HF/3-21G*
ABC
2.33351 0.36222 0.31355

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.410 0.000
N2 -1.028 -0.487 0.000
N3 1.208 0.053 0.000
H4 -0.344 1.434 0.000
H5 -1.979 -0.201 0.000
H6 -0.811 -1.460 0.000
H7 1.872 0.812 0.000

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7
C11.36441.25981.08062.07142.03791.9150
N21.36442.30052.03960.99330.99673.1780
N31.25982.30052.07773.19752.52271.0085
H41.08062.03962.07772.31282.93152.3020
H52.07140.99333.19752.31281.71773.9826
H62.03790.99672.52272.93151.71773.5155
H71.91503.17801.00852.30203.98263.5155

picture of aminomethanimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H5 122.153 C1 N2 H6 118.505
C1 N3 H7 114.735 N2 C1 N3 122.434
N2 C1 H4 112.551 N3 C1 H4 125.015
H5 N2 H6 119.343
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.441      
2 N -0.905      
3 N -0.715      
4 H 0.203      
5 H 0.342      
6 H 0.358      
7 H 0.276      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.371 1.543 0.000 2.829
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.241 3.123 0.000
y 3.123 -15.145 0.000
z 0.000 0.000 -20.294
Traceless
 xyz
x 1.479 3.123 0.000
y 3.123 3.122 0.000
z 0.000 0.000 -4.601
Polar
3z2-r2-9.203
x2-y2-1.096
xy3.123
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.799 0.249 0.000
y 0.249 2.886 0.000
z 0.000 0.000 0.951


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000