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: PBE1PBE/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 PBE1PBE/3-21G
 hartrees
Energy at 0K-185.548302
Energy at 298.15K 
HF Energy-185.548302
Nuclear repulsion energy89.364641
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 PBE1PBE/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 3234 3106 0.00 965.07 0.31 0.48
2 Ag 2346 2253 0.00 3.18 0.47 0.64
3 Ag 1165 1119 0.00 37.51 0.74 0.85
4 Ag 950 913 0.00 30.15 0.31 0.47
5 Ag 460 442 0.00 4.53 0.66 0.80
6 Au 992 953 159.94 0.00 0.00 0.00
7 Au 307 295 0.14 0.00 0.00 0.00
8 Bg 873 838 0.00 3.39 0.75 0.86
9 Bu 3234 3106 14.64 0.00 0.00 0.00
10 Bu 1789 1718 109.98 0.00 0.00 0.00
11 Bu 1149 1103 488.93 0.00 0.00 0.00
12 Bu 317 304 42.49 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8408.2 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 8075.2 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 PBE1PBE/3-21G
ABC
10.68998 0.14003 0.13822

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.008 -0.638 0.000
C2 -0.008 0.638 0.000
N3 -0.008 -1.883 0.000
N4 0.008 1.883 0.000
H5 0.922 -2.352 0.000
H6 -0.922 2.352 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.27611.24532.52121.94273.1311
C21.27612.52121.24533.13111.9427
N31.24532.52123.76651.04134.3327
N42.52121.24533.76654.33271.0413
H51.94273.13111.04134.33275.0524
H63.13111.94274.33271.04135.0524

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 178.634 C1 N3 H5 116.051
C2 C1 N3 178.634 C2 N4 H6 116.051
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.435      
2 C 0.435      
3 N -0.734      
4 N -0.734      
5 H 0.299      
6 H 0.299      


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 -21.642 -8.682 0.000
y -8.682 -22.644 0.000
z 0.000 0.000 -22.457
Traceless
 xyz
x 0.908 -8.682 0.000
y -8.682 -0.594 0.000
z 0.000 0.000 -0.314
Polar
3z2-r2-0.629
x2-y21.002
xy-8.682
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.270 -1.111 0.000
y -1.111 10.152 0.000
z 0.000 0.000 1.533


<r2> (average value of r2) Å2
<r2> 81.196
(<r2>)1/2 9.011