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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: CCSD(T)/cc-pVQZ

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)/cc-pVQZ
 hartrees
Energy at 0K-186.549800
Energy at 298.15K 
HF Energy-185.754910
Nuclear repulsion energy89.253653
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)/cc-pVQZ
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 3425 3321        
2 Ag 2053 1991        
3 Ag 1174 1139        
4 Ag 911 883        
5 Ag 301 291        
6 Au 942 914        
7 Au 241 234        
8 Bg 673 653        
9 Bu 3425 3321        
10 Bu 1704 1652        
11 Bu 1140 1105        
12 Bu 277 268        

Unscaled Zero Point Vibrational Energy (zpe) 8132.4 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 7886.0 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)/cc-pVQZ
ABC
8.33868 0.14232 0.13993

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVQZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.287 -0.590 0.000
C2 -0.287 0.590 0.000
N3 0.287 -1.840 0.000
N4 -0.287 1.840 0.000
H5 1.238 -2.215 0.000
H6 -1.238 2.215 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.31221.25052.49721.88263.1926
C21.31222.49721.25053.19261.8826
N31.25052.49723.72521.02184.3325
N42.49721.25053.72524.33251.0218
H51.88263.19261.02184.33255.0746
H63.19261.88264.33251.02185.0746

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 154.017 C1 N3 H5 111.495
C2 C1 N3 154.017 C2 N4 H6 111.495
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability