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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD(T)/6-31+G**

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)/6-31+G**
 hartrees
Energy at 0K-148.400555
Energy at 298.15K-148.402917
HF Energy-147.905752
Nuclear repulsion energy59.470068
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)/6-31+G**
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 3635 3489        
2 A 1249 1199        
3 A 940 902        
4 A 773 742        
5 A 513 493        
6 B 3636 3489        
7 B 2176 2088        
8 B 931 893        
9 B 493 473        

Unscaled Zero Point Vibrational Energy (zpe) 7172.8 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 6883.1 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 CCSD(T)/6-31+G**
ABC
11.81629 0.33936 0.33915

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.035
N2 0.000 1.234 -0.088
N3 0.000 -1.234 -0.088
H4 0.631 1.759 0.509
H5 -0.631 -1.759 0.509

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24001.24001.92751.9275
N21.24002.46771.01453.1161
N31.24002.46773.11611.0145
H41.92751.01453.11613.7371
H51.92753.11611.01453.7371

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.157 C1 N3 H5 117.157
N2 C1 N3 168.581
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability