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: TPSSh/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at TPSSh/6-311+G(3df,2p)
 hartrees
Energy at 0K-186.883887
Energy at 298.15K 
HF Energy-186.883887
Nuclear repulsion energy89.595096
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 TPSSh/6-311+G(3df,2p)
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 3371 3371 0.00 710.51 0.32 0.48
2 Ag 2113 2113 0.00 31.28 0.38 0.55
3 Ag 1169 1169 0.00 30.35 0.55 0.71
4 Ag 930 930 0.00 48.79 0.15 0.27
5 Ag 324 324 0.00 2.78 0.49 0.66
6 Au 958 958 113.55 0.00 0.00 0.00
7 Au 251 251 0.02 0.00 0.00 0.00
8 Bg 690 690 0.00 4.15 0.75 0.86
9 Bu 3371 3371 5.82 0.00 0.00 0.00
10 Bu 1740 1740 164.33 0.00 0.00 0.00
11 Bu 1131 1131 385.19 0.00 0.00 0.00
12 Bu 283 283 6.60 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8165.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8165.3 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 TPSSh/6-311+G(3df,2p)
ABC
8.91481 0.14296 0.14071

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-311+G(3df,2p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.262 -0.595 0.000
C2 -0.262 0.595 0.000
N3 0.262 -1.839 0.000
N4 -0.262 1.839 0.000
H5 1.207 -2.237 0.000
H6 -1.207 2.237 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.30011.24402.48981.89463.1903
C21.30012.48981.24403.19031.8946
N31.24402.48983.71521.02584.3326
N42.48981.24403.71524.33261.0258
H51.89463.19031.02584.33265.0838
H63.19031.89464.33261.02585.0838

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 156.261 C1 N3 H5 112.817
C2 C1 N3 156.261 C2 N4 H6 112.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.672      
2 C 0.672      
3 N -0.855      
4 N -0.855      
5 H 0.183      
6 H 0.183      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.947 -2.071 0.000
y -2.071 11.455 0.000
z 0.000 0.000 3.679


<r2> (average value of r2) Å2
<r2> 80.239
(<r2>)1/2 8.958