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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: QCISD(T)=FULL/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 QCISD(T)=FULL/6-31G*
 hartrees
Energy at 0K-148.381968
Energy at 298.15K-148.384338
HF Energy-147.891296
Nuclear repulsion energy59.487819
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 QCISD(T)=FULL/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 3561 3561        
2 A 1254 1254        
3 A 961 961        
4 A 783 783        
5 A 504 504        
6 B 3563 3563        
7 B 2208 2208        
8 B 956 956        
9 B 505 505        

Unscaled Zero Point Vibrational Energy (zpe) 7147.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7147.6 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 QCISD(T)=FULL/6-31G*
ABC
11.84396 0.33956 0.33952

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.026
N2 0.000 1.233 -0.084
N3 0.000 -1.233 -0.084
H4 0.638 1.759 0.511
H5 -0.638 -1.759 0.511

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23811.23811.93321.9332
N21.23812.46651.01903.1170
N31.23812.46653.11701.0190
H41.93321.01903.11703.7425
H51.93323.11701.01903.7425

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.519 C1 N3 H5 117.519
N2 C1 N3 169.785
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability