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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-185.557127
Energy at 298.15K 
HF Energy-185.557127
Nuclear repulsion energy88.474821
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 PBEPBE/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 Ag 3043 3016 0.00 1169.42 0.32 0.48
2 Ag 2238 2217 0.00 2.41 0.68 0.81
3 Ag 1130 1119 0.00 55.44 0.69 0.82
4 Ag 912 903 0.00 26.89 0.29 0.45
5 Ag 453 449 0.00 3.69 0.68 0.81
6 Au 953 944 137.09 0.00 0.00 0.00
7 Au 299 296 0.22 0.00 0.00 0.00
8 Bg 858 850 0.00 2.33 0.75 0.86
9 Bu 3038 3011 78.21 0.00 0.00 0.00
10 Bu 1711 1696 73.57 0.00 0.00 0.00
11 Bu 1121 1111 434.79 0.00 0.00 0.00
12 Bu 303 300 40.12 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8029.2 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 7956.1 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 PBEPBE/3-21G
ABC
10.25569 0.13747 0.13565

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.008 -0.643 0.000
C2 -0.008 0.643 0.000
N3 -0.008 -1.902 0.000
N4 0.008 1.902 0.000
H5 0.941 -2.366 0.000
H6 -0.941 2.366 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.28591.25892.54461.95943.1549
C21.28592.54461.25893.15491.9594
N31.25892.54463.80351.05664.3684
N42.54461.25893.80354.36841.0566
H51.95943.15491.05664.36845.0923
H63.15491.95944.36841.05665.0923

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 178.540 C1 N3 H5 115.323
C2 C1 N3 178.540 C2 N4 H6 115.323
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.412      
2 C 0.412      
3 N -0.691      
4 N -0.691      
5 H 0.278      
6 H 0.278      


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 -21.658 -8.276 0.000
y -8.276 -22.428 0.000
z 0.000 0.000 -22.411
Traceless
 xyz
x 0.761 -8.276 0.000
y -8.276 -0.394 0.000
z 0.000 0.000 -0.368
Polar
3z2-r2-0.735
x2-y20.770
xy-8.276
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.439 -1.223 0.000
y -1.223 10.486 0.000
z 0.000 0.000 1.546


<r2> (average value of r2) Å2
<r2> 82.403
(<r2>)1/2 9.078