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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: B3LYP/CEP-121G*

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-121G*
 hartrees
Energy at 0K-32.203801
Energy at 298.15K 
HF Energy-32.203801
Nuclear repulsion energy45.223371
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-121G*
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 3374 3271 0.00 787.75 0.32 0.49
2 Ag 2006 1945 0.00 43.29 0.36 0.53
3 Ag 1192 1156 0.00 30.29 0.75 0.85
4 Ag 904 876 0.00 36.96 0.18 0.31
5 Ag 354 343 0.00 8.08 0.36 0.53
6 Au 944 916 137.73 0.00 0.00 0.00
7 Au 249 241 0.18 0.00 0.00 0.00
8 Bg 718 696 0.00 12.95 0.75 0.86
9 Bu 3375 3271 0.80 0.00 0.00 0.00
10 Bu 1714 1662 169.07 0.00 0.00 0.00
11 Bu 1143 1108 455.21 0.00 0.00 0.00
12 Bu 280 271 9.94 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8126.2 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 7877.5 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/CEP-121G*
ABC
7.61389 0.14165 0.13907

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.326 -0.580 0.000
C2 -0.326 0.580 0.000
N3 0.326 -1.836 0.000
N4 -0.326 1.836 0.000
H5 1.284 -2.215 0.000
H6 -1.284 2.215 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.33091.25572.50261.89473.2254
C21.33092.50261.25573.22541.8947
N31.25572.50263.72951.03044.3589
N42.50261.25573.72954.35891.0304
H51.89473.22541.03044.35895.1200
H63.22541.89474.35891.03045.1200

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 150.710 C1 N3 H5 111.564
C2 C1 N3 150.710 C2 N4 H6 111.564
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.124      
2 C -0.124      
3 N -0.197      
4 N -0.197      
5 H 0.321      
6 H 0.321      


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 -19.594 -7.512 0.000
y -7.512 -23.430 0.000
z 0.000 0.000 -22.926
Traceless
 xyz
x 3.584 -7.512 0.000
y -7.512 -2.170 0.000
z 0.000 0.000 -1.414
Polar
3z2-r2-2.828
x2-y23.836
xy-7.512
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.532 -2.624 0.000
y -2.624 10.594 0.000
z 0.000 0.000 2.651


<r2> (average value of r2) Å2
<r2> 65.152
(<r2>)1/2 8.072