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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: QCISD(T)/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-186.293943
Energy at 298.15K 
HF Energy-185.664775
Nuclear repulsion energy88.433665
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 QCISD(T)/6-31G*
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 3373 3236        
2 Ag 1981 1900        
3 Ag 1204 1155        
4 Ag 910 873        
5 Ag 370 355        
6 Au 934 896        
7 Au 239 229        
8 Bg 716 686        
9 Bu 3374 3236        
10 Bu 1711 1641        
11 Bu 1145 1098        
12 Bu 284 273        

Unscaled Zero Point Vibrational Energy (zpe) 8119.9 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 7789.4 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 QCISD(T)/6-31G*
ABC
6.93627 0.14182 0.13898

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.183 -0.645 0.000
C2 -0.183 0.645 0.000
N3 -0.183 -1.854 0.000
N4 0.183 1.854 0.000
H5 0.631 -2.489 0.000
H6 -0.631 2.489 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.34031.26342.49911.89753.2372
C21.34032.49911.26343.23721.8975
N31.26342.49913.72661.03154.3660
N42.49911.26343.72664.36601.0315
H51.89753.23721.03154.36605.1346
H63.23721.89754.36601.03155.1346

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 147.401 C1 N3 H5 111.147
C2 C1 N3 147.401 C2 N4 H6 111.147
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability