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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP2=FULL/6-31G(2df,p)

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=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-148.467817
Energy at 298.15K-148.470229
HF Energy-147.916928
Nuclear repulsion energy60.136318
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=FULL/6-31G(2df,p)
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 3690 3468 36.49      
2 A 1275 1198 0.03      
3 A 892 838 10.93      
4 A 734 690 99.56      
5 A 552 519 0.73      
6 B 3689 3468 176.22      
7 B 2272 2135 494.09      
8 B 884 831 454.57      
9 B 571 537 122.42      

Unscaled Zero Point Vibrational Energy (zpe) 7279.6 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 6842.1 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=FULL/6-31G(2df,p)
ABC
12.67228 0.34629 0.34618

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.017
N2 0.000 1.219 -0.079
N3 0.000 -1.219 -0.079
H4 0.620 1.764 0.500
H5 -0.620 -1.764 0.500

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22321.22321.93171.9317
N21.22322.43891.00843.1021
N31.22322.43893.10211.0084
H41.93171.00843.10213.7404
H51.93173.10211.00843.7404

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.598 C1 N3 H5 119.598
N2 C1 N3 171.054
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability