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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: B3LYP/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-32.188977
Energy at 298.15K 
HF Energy-32.188977
Nuclear repulsion energy44.796373
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/CEP-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 Ag 3420 3303 0.00 569.50 0.33 0.49
2 Ag 1996 1927 0.00 49.59 0.36 0.53
3 Ag 1184 1144 0.00 34.21 0.74 0.85
4 Ag 909 878 0.00 40.59 0.22 0.36
5 Ag 391 378 0.00 8.26 0.37 0.54
6 Au 923 891 134.99 0.00 0.00 0.00
7 Au 244 236 0.38 0.00 0.00 0.00
8 Bg 737 712 0.00 13.98 0.75 0.86
9 Bu 3420 3303 11.94 0.00 0.00 0.00
10 Bu 1744 1684 219.91 0.00 0.00 0.00
11 Bu 1123 1084 477.21 0.00 0.00 0.00
12 Bu 279 269 11.95 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8184.7 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 7903.9 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/CEP-31G*
ABC
6.68608 0.13983 0.13697

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.190 -0.659 0.000
C2 -0.190 0.659 0.000
N3 -0.190 -1.864 0.000
N4 0.190 1.864 0.000
H5 0.617 -2.509 0.000
H6 -0.617 2.509 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.37121.26392.52301.89893.2689
C21.37122.52301.26393.26891.8989
N31.26392.52303.74771.03304.3940
N42.52301.26393.74774.39401.0330
H51.89893.26891.03304.39405.1675
H63.26891.89894.39401.03305.1675

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 146.433 C1 N3 H5 111.130
C2 C1 N3 146.433 C2 N4 H6 111.130
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.306      
2 C -0.306      
3 N 0.004      
4 N 0.004      
5 H 0.302      
6 H 0.302      


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 -24.007 -7.266 0.000
y -7.266 -18.667 0.000
z 0.000 0.000 -22.955
Traceless
 xyz
x -3.196 -7.266 0.000
y -7.266 4.814 0.000
z 0.000 0.000 -1.618
Polar
3z2-r2-3.237
x2-y2-5.340
xy-7.266
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.639 -0.751 0.000
y -0.751 11.406 0.000
z 0.000 0.000 2.601


<r2> (average value of r2) Å2
<r2> 65.889
(<r2>)1/2 8.117