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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: QCISD(T)/daug-cc-pVDZ

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)/daug-cc-pVDZ
 hartrees
Energy at 0K-186.360620
Energy at 298.15K 
HF Energy-185.698717
Nuclear repulsion energy87.961016
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)/daug-cc-pVDZ
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 3388 3388        
2 Ag 1945 1945        
3 Ag 1171 1171        
4 Ag 887 887        
5 Ag 351 351        
6 Au 914 914        
7 Au 233 233        
8 Bg 697 697        
9 Bu 3388 3388        
10 Bu 1668 1668        
11 Bu 1122 1122        
12 Bu 272 272        

Unscaled Zero Point Vibrational Energy (zpe) 8017.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8017.8 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)/daug-cc-pVDZ
ABC
6.98719 0.13989 0.13714

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.180 -0.651 0.000
C2 -0.180 0.651 0.000
N3 -0.180 -1.868 0.000
N4 0.180 1.868 0.000
H5 0.642 -2.493 0.000
H6 -0.642 2.493 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.35051.26892.51891.89913.2495
C21.35052.51891.26893.24951.8991
N31.26892.51893.75311.03254.3853
N42.51891.26893.75314.38531.0325
H51.89913.24951.03254.38535.1486
H63.24951.89914.38531.03255.1486

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 148.136 C1 N3 H5 110.809
C2 C1 N3 148.136 C2 N4 H6 110.809
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability