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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-148.350343
Energy at 298.15K-148.352737
HF Energy-147.892344
Nuclear repulsion energy59.694479
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/6-31G*
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 3590 3390 18.02      
2 A 1282 1210 0.02      
3 A 973 919 6.75      
4 A 809 764 108.24      
5 A 512 483 0.02      
6 B 3590 3391 79.87      
7 B 2237 2112 537.60      
8 B 969 915 498.87      
9 B 509 480 72.14      

Unscaled Zero Point Vibrational Energy (zpe) 7234.5 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 6831.5 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/6-31G*
ABC
11.82308 0.34207 0.34199

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.019
N2 0.000 1.229 -0.082
N3 0.000 -1.229 -0.082
H4 0.640 1.746 0.517
H5 -0.640 -1.746 0.517

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23351.23351.92481.9248
N21.23352.45871.01733.1016
N31.23352.45873.10161.0173
H41.92481.01733.10163.7187
H51.92483.10161.01733.7187

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.229 C1 N3 H5 117.229
N2 C1 N3 170.558
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability