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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD/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 CCSD/cc-pVQZ
 hartrees
Energy at 0K-148.557701
Energy at 298.15K-148.560147
HF Energy-147.968877
Nuclear repulsion energy60.331342
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/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 3642 3461 26.29      
2 A 1288 1224 0.00      
3 A 959 911 8.49      
4 A 773 735 88.75      
5 A 547 520 0.03      
6 B 3640 3460 140.36      
7 B 2225 2115 696.02      
8 B 951 904 457.74      
9 B 548 521 83.60      

Unscaled Zero Point Vibrational Energy (zpe) 7286.1 cm-1
Scaled (by 0.9505) Zero Point Vibrational Energy (zpe) 6925.4 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/cc-pVQZ
ABC
12.10102 0.34931 0.34928

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.012
N2 0.000 1.217 -0.079
N3 0.000 -1.217 -0.079
H4 0.631 1.727 0.519
H5 -0.631 -1.727 0.519

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22001.22001.90701.9070
N21.22002.43321.00783.0690
N31.22002.43323.06901.0078
H41.90701.00783.06903.6767
H51.90703.06901.00783.6767

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.427 C1 N3 H5 117.427
N2 C1 N3 171.450
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability