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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP3/TZVP
 hartrees
Energy at 0K-148.426331
Energy at 298.15K-148.428744
HF Energy-147.948416
Nuclear repulsion energy60.337117
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 MP3/TZVP
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 3664 3427 21.90      
2 A 1307 1222 0.01      
3 A 924 864 2.00      
4 A 806 754 105.03      
5 A 527 493 0.02      
6 B 3662 3425 117.44      
7 B 2252 2106 726.75      
8 B 914 855 456.26      
9 B 525 491 93.01      

Unscaled Zero Point Vibrational Energy (zpe) 7290.8 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 6818.4 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 MP3/TZVP
ABC
11.83529 0.34980 0.34979

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.014
N2 0.000 1.217 -0.081
N3 0.000 -1.217 -0.081
H4 0.637 1.714 0.524
H5 -0.637 -1.714 0.524

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22031.22031.89851.8985
N21.22032.43321.00903.0596
N31.22032.43323.05961.0090
H41.89851.00903.05963.6575
H51.89853.05961.00903.6575

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.461 C1 N3 H5 116.461
N2 C1 N3 171.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability