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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: QCISD(T)=FULL/Def2TZVPP

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)=FULL/Def2TZVPP
 hartrees
Energy at 0K-186.579886
Energy at 298.15K 
HF Energy-185.749364
Nuclear repulsion energy89.205189
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)=FULL/Def2TZVPP
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 3420 3420        
2 Ag 2056 2056        
3 Ag 1176 1176        
4 Ag 910 910        
5 Ag 299 299        
6 Au 943 943        
7 Au 243 243        
8 Bg 669 669        
9 Bu 3421 3421        
10 Bu 1700 1700        
11 Bu 1141 1141        
12 Bu 277 277        

Unscaled Zero Point Vibrational Energy (zpe) 8127.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8127.3 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 QCISD(T)=FULL/Def2TZVPP
ABC
8.43719 0.14200 0.13965

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/Def2TZVPP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.281 -0.592 0.000
C2 -0.281 0.592 0.000
N3 0.281 -1.844 0.000
N4 -0.281 1.844 0.000
H5 1.232 -2.217 0.000
H6 -1.232 2.217 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.31151.25142.50031.88273.1913
C21.31152.50031.25143.19131.8827
N31.25142.50033.73021.02164.3339
N42.50031.25143.73024.33391.0216
H51.88273.19131.02164.33395.0733
H63.19131.88274.33391.02165.0733

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 154.597 C1 N3 H5 111.442
C2 C1 N3 154.597 C2 N4 H6 111.442
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability