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/aug-cc-pVQZ

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/aug-cc-pVQZ
 hartrees
Energy at 0K-185.762075
Energy at 298.15K 
HF Energy-185.762075
Nuclear repulsion energy91.017821
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/aug-cc-pVQZ
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 3664 3329 0.00 532.91 0.30 0.46
2 Ag 2427 2205 0.00 94.26 0.36 0.53
3 Ag 1268 1152 0.00 15.67 0.56 0.71
4 Ag 997 906 0.00 63.67 0.16 0.28
5 Ag 333 303 0.00 6.31 0.62 0.76
6 Au 1047 951 146.76 0.00 0.00 0.00
7 Au 276 251 0.61 0.00 0.00 0.00
8 Bg 700 636 0.00 5.33 0.75 0.86
9 Bu 3665 3330 58.09 0.00 0.00 0.00
10 Bu 1881 1709 357.19 0.00 0.00 0.00
11 Bu 1263 1148 346.15 0.00 0.00 0.00
12 Bu 316 287 11.58 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8919.5 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 8103.4 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/aug-cc-pVQZ
ABC
11.07137 0.14505 0.14318

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVQZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.119 -0.625 0.000
C2 -0.119 0.625 0.000
N3 0.119 -1.845 0.000
N4 -0.119 1.845 0.000
H5 1.044 -2.238 0.000
H6 -1.044 2.238 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.27161.22062.48111.86023.0904
C21.27162.48111.22063.09041.8602
N31.22062.48113.69791.00524.2461
N42.48111.22063.69794.24611.0052
H51.86023.09041.00524.24614.9401
H63.09041.86024.24611.00524.9401

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 169.193 C1 N3 H5 113.036
C2 C1 N3 169.193 C2 N4 H6 113.036
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.356      
2 C 0.356      
3 N -0.685      
4 N -0.685      
5 H 0.329      
6 H 0.329      


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 -21.100 -7.718 0.000
y -7.718 -24.541 0.000
z 0.000 0.000 -23.254
Traceless
 xyz
x 2.797 -7.718 0.000
y -7.718 -2.363 0.000
z 0.000 0.000 -0.434
Polar
3z2-r2-0.867
x2-y23.440
xy-7.718
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.288 -1.313 0.000
y -1.313 11.380 0.000
z 0.000 0.000 3.661


<r2> (average value of r2) Å2
<r2> 79.257
(<r2>)1/2 8.903