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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: QCISD(T)/aug-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)/aug-cc-pVDZ
 hartrees
Energy at 0K-186.357744
Energy at 298.15K 
HF Energy-185.697738
Nuclear repulsion energy87.940646
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)/aug-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 3390 3315        
2 Ag 1941 1898        
3 Ag 1167 1141        
4 Ag 888 868        
5 Ag 362 354        
6 Au 912 892        
7 Au 231 226        
8 Bg 698 683        
9 Bu 3390 3315        
10 Bu 1669 1632        
11 Bu 1117 1092        
12 Bu 271 265        

Unscaled Zero Point Vibrational Energy (zpe) 8017.7 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 7839.7 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)/aug-cc-pVDZ
ABC
6.92700 0.13992 0.13715

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.181 -0.651 0.000
C2 -0.181 0.651 0.000
N3 -0.181 -1.867 0.000
N4 0.181 1.867 0.000
H5 0.638 -2.495 0.000
H6 -0.638 2.495 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.35231.26892.51861.89963.2516
C21.35232.51861.26893.25161.8996
N31.26892.51863.75211.03274.3863
N42.51861.26893.75214.38631.0327
H51.89963.25161.03274.38635.1511
H63.25161.89964.38631.03275.1511

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 147.812 C1 N3 H5 110.829
C2 C1 N3 147.812 C2 N4 H6 110.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability