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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: HF/aug-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 HF/aug-cc-pVDZ
 hartrees
Energy at 0K-147.926949
Energy at 298.15K-147.929505
HF Energy-147.926949
Nuclear repulsion energy60.697667
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 HF/aug-cc-pVDZ
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 3800 3460 31.44      
2 A 1370 1248 0.03      
3 A 1048 954 13.06      
4 A 816 743 104.08      
5 A 590 538 0.28      
6 B 3794 3455 193.40      
7 B 2310 2103 1033.90      
8 B 1040 947 466.49      
9 B 593 540 93.79      

Unscaled Zero Point Vibrational Energy (zpe) 7679.7 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 6993.1 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 HF/aug-cc-pVDZ
ABC
11.99622 0.35375 0.35370

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.004
N2 0.000 1.211 0.074
N3 0.000 -1.211 0.074
H4 -0.633 1.698 -0.532
H5 0.633 -1.698 -0.532

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21261.21261.89011.8901
N21.21262.42111.00323.0380
N31.21262.42113.03801.0032
H41.89011.00323.03803.6246
H51.89013.03801.00323.6246

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.766 C1 N3 H5 116.766
N2 C1 N3 173.382
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.236      
2 N -0.198      
3 N -0.198      
4 H 0.079      
5 H 0.079      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.165 2.165
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.022 -4.317 0.000
y -4.317 -17.724 0.000
z 0.000 0.000 -17.522
Traceless
 xyz
x 0.600 -4.317 0.000
y -4.317 -0.452 0.000
z 0.000 0.000 -0.149
Polar
3z2-r2-0.297
x2-y20.701
xy-4.317
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.892 -0.257 0.000
y -0.257 6.261 0.000
z 0.000 0.000 2.860


<r2> (average value of r2) Å2
<r2> 38.611
(<r2>)1/2 6.214