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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP2/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-148.362926
Energy at 298.15K-148.365301
HF Energy-147.909889
Nuclear repulsion energy59.353756
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/cc-pVDZ
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 3604 3433 27.34      
2 A 1248 1189 0.00      
3 A 940 895 5.30      
4 A 757 721 87.23      
5 A 507 483 0.26      
6 B 3606 3434 110.02      
7 B 2215 2110 432.66      
8 B 927 883 412.04      
9 B 515 490 83.11      

Unscaled Zero Point Vibrational Energy (zpe) 7159.3 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 6819.2 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/cc-pVDZ
ABC
11.34051 0.33866 0.33856

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.026
N2 0.000 1.237 -0.086
N3 0.000 -1.237 -0.086
H4 0.646 1.738 0.527
H5 -0.646 -1.738 0.527

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24201.24201.92061.9206
N21.24202.47381.02223.1053
N31.24202.47383.10531.0222
H41.92061.02223.10533.7083
H51.92063.10531.02223.7083

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 115.707 C1 N3 H5 115.707
N2 C1 N3 169.625
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability