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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-148.394611
Energy at 298.15K-148.397000
HF Energy-147.927363
Nuclear repulsion energy59.835228
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 MP2/6-311G*
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 3651 3470 23.34      
2 A 1260 1197 0.00      
3 A 924 878 10.31      
4 A 745 708 118.07      
5 A 530 504 0.74      
6 B 3652 3470 127.09      
7 B 2234 2123 494.40      
8 B 915 870 525.89      
9 B 534 508 94.87      

Unscaled Zero Point Vibrational Energy (zpe) 7222.1 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 6863.1 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 MP2/6-311G*
ABC
12.54315 0.34278 0.34278

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.028
N2 0.000 1.224 -0.078
N3 0.000 -1.224 -0.078
H4 0.653 1.774 0.463
H5 -0.653 -1.774 0.463

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22841.22841.93921.9392
N21.22842.44761.01043.1150
N31.22842.44763.11501.0104
H41.93921.01043.11503.7799
H51.93923.11501.01043.7799

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.721 C1 N3 H5 119.721
N2 C1 N3 170.061
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability