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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: QCISD(T)/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)/cc-pVDZ
 hartrees
Energy at 0K-186.320516
Energy at 298.15K 
HF Energy-185.685089
Nuclear repulsion energy88.007469
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)/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 3391 3232        
2 Ag 1958 1866        
3 Ag 1176 1121        
4 Ag 895 853        
5 Ag 350 334        
6 Au 919 876        
7 Au 233 222        
8 Bg 702 669        
9 Bu 3392 3233        
10 Bu 1691 1611        
11 Bu 1127 1074        
12 Bu 281 268        

Unscaled Zero Point Vibrational Energy (zpe) 8057.7 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 7679.8 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)/cc-pVDZ
ABC
6.77965 0.14037 0.13752

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.183 -0.651 0.000
C2 -0.183 0.651 0.000
N3 -0.183 -1.865 0.000
N4 0.183 1.865 0.000
H5 0.650 -2.481 0.000
H6 -0.650 2.481 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.35211.26792.51601.88883.2407
C21.35212.51601.26793.24071.8888
N31.26792.51603.74801.03564.3711
N42.51601.26793.74804.37111.0356
H51.88883.24071.03564.37115.1294
H63.24071.88884.37111.03565.1294

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 147.570 C1 N3 H5 109.748
C2 C1 N3 147.570 C2 N4 H6 109.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability