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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: QCISD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-186.298369
Energy at 298.15K 
HF Energy-185.684406
Nuclear repulsion energy88.812883
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/6-31+G**
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 3496 3305 0.00      
2 Ag 2081 1968 0.00      
3 Ag 1199 1134 0.00      
4 Ag 927 876 0.00      
5 Ag 346 327 0.00      
6 Au 957 904 135.61      
7 Au 243 230 0.00      
8 Bg 707 668 0.00      
9 Bu 3497 3306 13.41      
10 Bu 1739 1644 162.48      
11 Bu 1159 1095 409.97      
12 Bu 280 265 7.38      

Unscaled Zero Point Vibrational Energy (zpe) 8314.8 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 7860.8 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/6-31+G**
ABC
7.82770 0.14150 0.13899

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.315 -0.583 0.000
C2 -0.315 0.583 0.000
N3 0.315 -1.840 0.000
N4 -0.315 1.840 0.000
H5 1.268 -2.213 0.000
H6 -1.268 2.213 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.32561.25712.50421.88753.2127
C21.32562.50421.25713.21271.8875
N31.25712.50423.73431.02314.3510
N42.50421.25713.73434.35101.0231
H51.88753.21271.02314.35105.1001
H63.21271.88754.35101.02315.1001

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 151.647 C1 N3 H5 111.331
C2 C1 N3 151.647 C2 N4 H6 111.331
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability