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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCD/cc-pVTZ
 hartrees
Energy at 0K-148.509409
Energy at 298.15K-148.511863
HF Energy-147.957590
Nuclear repulsion energy60.277565
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 CCD/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 A 3640 3398 25.25      
2 A 1291 1206 0.00      
3 A 967 903 7.13      
4 A 793 740 88.45      
5 A 543 507 0.00      
6 B 3638 3397 129.84      
7 B 2241 2092 675.55      
8 B 960 896 451.23      
9 B 544 508 85.21      

Unscaled Zero Point Vibrational Energy (zpe) 7308.0 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 6823.5 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 CCD/cc-pVTZ
ABC
11.88482 0.34890 0.34889

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.010
N2 0.000 1.218 -0.079
N3 0.000 -1.218 -0.079
H4 0.635 1.717 0.526
H5 -0.635 -1.717 0.526

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22151.22151.90191.9019
N21.22152.43651.00903.0632
N31.22152.43653.06321.0090
H41.90191.00903.06323.6608
H51.90193.06321.00903.6608

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.685 C1 N3 H5 116.685
N2 C1 N3 171.666
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability