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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-148.426281
Energy at 298.15K-148.428624
HF Energy-147.947043
Nuclear repulsion energy59.982958
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 MP2/TZVP
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 3643 3453 26.87      
2 A 1266 1200 0.01      
3 A 860 815 4.55      
4 A 730 692 111.22      
5 A 522 495 0.44      
6 B 3643 3453 154.53      
7 B 2227 2111 574.62      
8 B 846 802 477.78      
9 B 524 497 107.44      

Unscaled Zero Point Vibrational Energy (zpe) 7129.8 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 6758.3 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 MP2/TZVP
ABC
12.32271 0.34501 0.34490

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.028
N2 0.000 1.222 -0.084
N3 0.000 -1.222 -0.084
H4 0.622 1.762 0.503
H5 -0.622 -1.762 0.503

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22721.22721.92761.9276
N21.22722.44411.01083.1039
N31.22722.44413.10391.0108
H41.92761.01083.10393.7366
H51.92763.10391.01083.7366

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.611 C1 N3 H5 118.611
N2 C1 N3 169.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability