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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: MP3=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at MP3=FULL/3-21G
 hartrees
Energy at 0K-185.035201
Energy at 298.15K 
HF Energy-184.630212
Nuclear repulsion energy88.850872
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 MP3=FULL/3-21G
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 3255 3255 0.00      
2 Ag 2294 2294 0.00      
3 Ag 1210 1210 0.00      
4 Ag 927 927 0.00      
5 Ag 282 282 0.00      
6 Au 1008 1008 149.42      
7 Au 278 278 0.02      
8 Bg 761 761 0.00      
9 Bu 3258 3258 19.04      
10 Bu 1734 1734 66.88      
11 Bu 1208 1208 457.52      
12 Bu 296 296 40.44      

Unscaled Zero Point Vibrational Energy (zpe) 8255.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8255.6 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 MP3=FULL/3-21G
ABC
10.56280 0.13832 0.13653

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 -0.641 0.000
C2 -0.005 0.641 0.000
N3 -0.005 -1.897 0.000
N4 0.005 1.897 0.000
H5 0.930 -2.349 0.000
H6 -0.930 2.349 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.28211.25572.53771.94253.1329
C21.28212.53771.25573.13291.9425
N31.25572.53773.79331.03854.3454
N42.53771.25573.79334.34541.0385
H51.94253.13291.03854.34545.0530
H63.13291.94254.34541.03855.0530

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 179.121 C1 N3 H5 115.387
C2 C1 N3 179.121 C2 N4 H6 115.387
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability