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 HNCCNH (Ethenediimine)

using model chemistry: HF/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-183.269318
Energy at 298.15K 
HF Energy-183.269318
Nuclear repulsion energy89.265216
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3804 3106 0.00 474.33 0.32 0.49
2 Ag 2600 2123 0.00 84.26 0.32 0.49
3 Ag 1400 1143 0.00 30.13 0.75 0.86
4 Ag 1048 855 0.00 43.83 0.29 0.45
5 Ag 336 274 0.00 2.18 0.45 0.62
6 Au 1093 892 89.41 0.00 0.00 0.00
7 Au 267 218 2.12 0.00 0.00 0.00
8 Bg 720 588 0.00 16.78 0.75 0.86
9 Bu 3802 3105 28.50 0.00 0.00 0.00
10 Bu 1980 1616 51.60 0.00 0.00 0.00
11 Bu 1406 1148 288.35 0.00 0.00 0.00
12 Bu 323 264 12.57 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 9388.2 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 7665.5 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/STO-3G
ABC
9.50157 0.14114 0.13907

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.145 -0.617 0.000
C2 -0.145 0.617 0.000
N3 0.145 -1.874 0.000
N4 -0.145 1.874 0.000
H5 1.134 -2.236 0.000
H6 -1.134 2.236 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.26681.25722.50711.89753.1264
C21.26682.50711.25723.12641.8975
N31.25722.50713.75871.05284.3044
N42.50711.25723.75874.30441.0528
H51.89753.12641.05284.30445.0144
H63.12641.89754.30441.05285.0144

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 166.749 C1 N3 H5 110.148
C2 C1 N3 166.749 C2 N4 H6 110.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.082      
2 C 0.082      
3 N -0.261      
4 N -0.261      
5 H 0.180      
6 H 0.180      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.591 -6.567 0.000
y -6.567 -24.388 0.000
z 0.000 0.000 -20.470
Traceless
 xyz
x 3.838 -6.567 0.000
y -6.567 -4.857 0.000
z 0.000 0.000 1.019
Polar
3z2-r22.038
x2-y25.796
xy-6.567
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.676 -2.029 0.000
y -2.029 8.011 0.000
z 0.000 0.000 0.703


<r2> (average value of r2) Å2
<r2> 80.044
(<r2>)1/2 8.947