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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: QCISD(T)=FULL/aug-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 QCISD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-148.438812
Energy at 298.15K-148.441210
HF Energy-147.922503
Nuclear repulsion energy59.212733
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 QCISD(T)=FULL/aug-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 3560 3453        
2 A 1225 1188        
3 A 964 936        
4 A 757 735        
5 A 515 500        
6 B 3560 3454        
7 B 2137 2073        
8 B 958 930        
9 B 519 504        

Unscaled Zero Point Vibrational Energy (zpe) 7098.2 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 6886.0 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 QCISD(T)=FULL/aug-cc-pVDZ
ABC
11.45347 0.33670 0.33652

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.026
N2 0.000 1.240 -0.086
N3 0.000 -1.240 -0.086
H4 0.641 1.748 0.526
H5 -0.641 -1.748 0.526

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24541.24541.92741.9274
N21.24542.48061.02143.1166
N31.24542.48063.11661.0214
H41.92741.02143.11663.7228
H51.92743.11661.02143.7228

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.135 C1 N3 H5 116.135
N2 C1 N3 169.638
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability