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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD=FULL/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=FULL/cc-pVTZ
 hartrees
Energy at 0K-148.558670
Energy at 298.15K-148.561118
HF Energy-147.957883
Nuclear repulsion energy60.377984
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=FULL/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 3651 3462 25.71      
2 A 1295 1228 0.00      
3 A 956 907 8.22      
4 A 781 740 89.26      
5 A 547 519 0.01      
6 B 3650 3461 129.45      
7 B 2248 2131 662.69      
8 B 949 899 457.66      
9 B 545 517 86.76      

Unscaled Zero Point Vibrational Energy (zpe) 7310.8 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 6931.4 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=FULL/cc-pVTZ
ABC
12.13094 0.34979 0.34978

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.010
N2 0.000 1.216 -0.079
N3 0.000 -1.216 -0.079
H4 0.629 1.725 0.520
H5 -0.629 -1.725 0.520

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21911.21911.90551.9055
N21.21912.43161.00673.0664
N31.21912.43163.06641.0067
H41.90551.00673.06643.6720
H51.90553.06641.00673.6720

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.449 C1 N3 H5 117.449
N2 C1 N3 171.612
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability