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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: CCSD(T)=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-186.465399
Energy at 298.15K 
HF Energy-185.731331
Nuclear repulsion energy89.082785
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 CCSD(T)=FULL/TZVP
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 3415 3264        
2 Ag 2011 1923        
3 Ag 1178 1127        
4 Ag 910 870        
5 Ag 367 351        
6 Au 937 896        
7 Au 234 224        
8 Bg 684 654        
9 Bu 3415 3265        
10 Bu 1699 1624        
11 Bu 1137 1087        
12 Bu 282 270        

Unscaled Zero Point Vibrational Energy (zpe) 8133.8 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 7776.0 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 CCSD(T)=FULL/TZVP
ABC
7.59871 0.14287 0.14023

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 -0.576 0.000
C2 -0.324 0.576 0.000
N3 0.324 -1.830 0.000
N4 -0.324 1.830 0.000
H5 1.282 -2.194 0.000
H6 -1.282 2.194 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.32101.25422.49141.88083.2016
C21.32102.49141.25423.20161.8808
N31.25422.49143.71681.02504.3327
N42.49141.25423.71684.33271.0250
H51.88083.20161.02504.33275.0824
H63.20161.88084.33271.02505.0824

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 150.665 C1 N3 H5 110.814
C2 C1 N3 150.665 C2 N4 H6 110.814
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability