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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: QCISD(T)=FULL/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-186.556408
Energy at 298.15K 
HF Energy-185.743654
Nuclear repulsion energy89.399231
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/cc-pVTZ
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 3421 3274        
2 Ag 2135 2043        
3 Ag 1179 1128        
4 Ag 920 880        
5 Ag 283 271        
6 Au 953 912        
7 Au 257 246        
8 Bg 670 641        
9 Bu 3422 3274        
10 Bu 1710 1636        
11 Bu 1155 1106        
12 Bu 287 274        

Unscaled Zero Point Vibrational Energy (zpe) 8195.9 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 7842.7 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)=FULL/cc-pVTZ
ABC
9.11484 0.14182 0.13965

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.238 -0.603 0.000
C2 -0.238 0.603 0.000
N3 0.238 -1.853 0.000
N4 -0.238 1.853 0.000
H5 1.190 -2.225 0.000
H6 -1.190 2.225 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.29711.25022.50231.88003.1680
C21.29712.50231.25023.16801.8800
N31.25022.50233.73721.02154.3208
N42.50231.25023.73724.32081.0215
H51.88003.16801.02154.32085.0457
H63.16801.88004.32081.02155.0457

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 158.438 C1 N3 H5 111.305
C2 C1 N3 158.438 C2 N4 H6 111.305
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability