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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD=FULL/cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-148.382175
Energy at 298.15K-148.384598
HF Energy-147.910974
Nuclear repulsion energy59.534593
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-pVDZ
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 3591 3591 20.74      
2 A 1267 1267 0.01      
3 A 995 995 3.63      
4 A 812 812 82.80      
5 A 512 512 0.01      
6 B 3592 3592 72.81      
7 B 2215 2215 520.01      
8 B 988 988 398.02      
9 B 515 515 68.13      

Unscaled Zero Point Vibrational Energy (zpe) 7242.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7242.5 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-pVDZ
ABC
11.07656 0.34110 0.34107

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.012
N2 0.000 1.235 -0.083
N3 0.000 -1.235 -0.083
H4 0.657 1.707 0.542
H5 -0.657 -1.707 0.542

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23821.23821.90391.9039
N21.23822.46911.02233.0777
N31.23822.46913.07771.0223
H41.90391.02233.07773.6572
H51.90393.07771.02233.6572

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 114.419 C1 N3 H5 114.419
N2 C1 N3 171.207
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability