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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP2/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-148.398865
Energy at 298.15K-148.401247
HF Energy-147.923386
Nuclear repulsion energy59.309014
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/daug-cc-pVDZ
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 3597 3597 24.27      
2 A 1237 1237 0.06      
3 A 925 925 7.61      
4 A 725 725 84.70      
5 A 521 521 0.33      
6 B 3597 3597 155.19      
7 B 2174 2174 590.87      
8 B 916 916 446.05      
9 B 529 529 81.42      

Unscaled Zero Point Vibrational Energy (zpe) 7110.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7110.1 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/daug-cc-pVDZ
ABC
11.78232 0.33752 0.33731

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/daug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.030
N2 0.000 1.237 -0.087
N3 0.000 -1.237 -0.087
H4 0.631 1.765 0.515
H5 -0.631 -1.765 0.515

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24261.24261.93601.9360
N21.24262.47431.01953.1260
N31.24262.47433.12601.0195
H41.93601.01953.12603.7484
H51.93603.12601.01953.7484

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.366 C1 N3 H5 117.366
N2 C1 N3 169.230
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability