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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: QCISD/daug-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 QCISD/daug-cc-pVTZ
 hartrees
Energy at 0K-148.529836
Energy at 298.15K-148.532267
HF Energy-147.960342
Nuclear repulsion energy60.106962
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/daug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3624 3624 24.03      
2 A 1270 1270 0.01      
3 A 963 963 8.30      
4 A 764 764 85.16      
5 A 543 543 0.05      
6 B 3623 3623 135.66      
7 B 2198 2198 693.61      
8 B 955 955 456.41      
9 B 544 544 76.22      

Unscaled Zero Point Vibrational Energy (zpe) 7242.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7242.0 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/daug-cc-pVTZ
ABC
12.02022 0.34666 0.34664

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.015
N2 0.000 1.221 -0.081
N3 0.000 -1.221 -0.081
H4 0.631 1.733 0.519
H5 -0.631 -1.733 0.519

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22501.22501.91221.9122
N21.22502.44251.01003.0801
N31.22502.44253.08011.0100
H41.91221.01003.08013.6892
H51.91223.08011.01003.6892

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.318 C1 N3 H5 117.318
N2 C1 N3 171.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability