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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP2=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 MP2=FULL/6-31G
 hartrees
Energy at 0K-148.135056
Energy at 298.15K-148.137316
HF Energy-147.809547
Nuclear repulsion energy58.987904
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=FULL/6-31G
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 3655 3473 12.91      
2 A 1238 1176 0.25      
3 A 850 807 32.72      
4 A 688 654 163.16      
5 A 509 484 0.99      
6 B 3658 3476 175.90      
7 B 2215 2105 422.52      
8 B 826 785 713.81      
9 B 479 455 59.40      

Unscaled Zero Point Vibrational Energy (zpe) 7059.4 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 6707.1 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=FULL/6-31G
ABC
15.13318 0.33069 0.33052

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.062
N2 0.000 1.238 -0.085
N3 0.000 -1.238 -0.085
H4 0.563 1.921 0.409
H5 -0.563 -1.921 0.409

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24641.24642.03122.0312
N21.24642.47541.01353.2459
N31.24642.47543.24591.0135
H42.03121.01353.24594.0030
H52.03123.24591.01354.0030

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 127.698 C1 N3 H5 127.698
N2 C1 N3 166.415
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability