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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD/aug-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/aug-cc-pVTZ
 hartrees
Energy at 0K-148.526483
Energy at 298.15K-148.528928
HF Energy-147.960302
Nuclear repulsion energy60.163359
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/aug-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 3625 3465 24.34      
2 A 1279 1222 0.00      
3 A 962 919 8.23      
4 A 771 737 85.31      
5 A 543 519 0.05      
6 B 3623 3463 139.29      
7 B 2209 2111 726.35      
8 B 954 912 457.61      
9 B 546 522 78.77      

Unscaled Zero Point Vibrational Energy (zpe) 7255.9 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 6935.2 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/aug-cc-pVTZ
ABC
12.01003 0.34738 0.34737

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.014
N2 0.000 1.220 -0.080
N3 0.000 -1.220 -0.080
H4 0.632 1.730 0.520
H5 -0.632 -1.730 0.520

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22371.22371.91051.9105
N21.22372.44011.01003.0766
N31.22372.44013.07661.0100
H41.91051.01003.07663.6843
H51.91053.07661.01003.6843

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.274 C1 N3 H5 117.274
N2 C1 N3 171.191
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability