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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD(T)/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-148.543835
Energy at 298.15K-148.546243
HF Energy-147.956086
Nuclear repulsion energy59.903452
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 CCSD(T)/cc-pVTZ
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 3595 3504        
2 A 1248 1216        
3 A 954 930        
4 A 761 741        
5 A 526 512        
6 B 3595 3504        
7 B 2188 2133        
8 B 945 921        
9 B 527 513        

Unscaled Zero Point Vibrational Energy (zpe) 7168.6 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 6987.9 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 CCSD(T)/cc-pVTZ
ABC
11.81257 0.34445 0.34440

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.019
N2 0.000 1.226 -0.083
N3 0.000 -1.226 -0.083
H4 0.636 1.732 0.521
H5 -0.636 -1.732 0.521

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23001.23001.91171.9117
N21.23002.45161.01193.0845
N31.23002.45163.08451.0119
H41.91171.01193.08453.6891
H51.91173.08451.01193.6891

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.677 C1 N3 H5 116.677
N2 C1 N3 170.550
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability