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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: QCISD(T)=FULL/aug-cc-pVQZ

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-pVQZ
 hartrees
Energy at 0K-148.686502
Energy at 298.15K-148.688913
HF Energy-147.969002
Nuclear repulsion energy60.149777
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-pVQZ
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 3624 3624        
2 A 1267 1267        
3 A 934 934        
4 A 744 744        
5 A 537 537        
6 B 3622 3622        
7 B 2202 2202        
8 B 929 929        
9 B 541 541        

Unscaled Zero Point Vibrational Energy (zpe) 7199.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7199.5 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 QCISD(T)=FULL/aug-cc-pVQZ
ABC
12.35838 0.34683 0.34676

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.020
N2 0.000 1.219 -0.081
N3 0.000 -1.219 -0.081
H4 0.622 1.751 0.508
H5 -0.622 -1.751 0.508

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22371.22371.92071.9207
N21.22372.43901.00813.0912
N31.22372.43903.09121.0081
H41.92071.00813.09123.7154
H51.92073.09121.00813.7154

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.445 C1 N3 H5 118.445
N2 C1 N3 170.448
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability