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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBEPBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-146.652940
Energy at 298.15K-146.655129
HF Energy-146.652940
Nuclear repulsion energy57.409810
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 PBEPBE/STO-3G
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 3418 3123 0.02      
2 A 1190 1087 1.64      
3 A 1052 962 0.54      
4 A 834 762 52.87      
5 A 461 421 0.10      
6 B 3433 3136 15.36      
7 B 2165 1978 91.58      
8 B 1007 920 301.57      
9 B 464 424 37.87      

Unscaled Zero Point Vibrational Energy (zpe) 7012.2 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 6406.3 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 PBEPBE/STO-3G
ABC
9.07746 0.32162 0.32076

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.088
N2 0.000 1.269 -0.114
N3 0.000 -1.269 -0.114
H4 0.698 1.772 0.531
H5 -0.698 -1.772 0.531

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.28511.28511.95501.9550
N21.28512.53821.07503.1858
N31.28512.53823.18581.0750
H41.95501.07503.18583.8082
H51.95503.18581.07503.8082

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 111.552 C1 N3 H5 111.552
N2 C1 N3 161.911
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.167      
2 N -0.284      
3 N -0.284      
4 H 0.200      
5 H 0.200      


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 1.995 1.995
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.052 3.629 0.000
y 3.629 -15.649 0.000
z 0.000 0.000 -15.722
Traceless
 xyz
x 0.633 3.629 0.000
y 3.629 -0.262 0.000
z 0.000 0.000 -0.371
Polar
3z2-r2-0.743
x2-y20.597
xy3.629
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.923 0.665 0.000
y 0.665 4.426 0.000
z 0.000 0.000 0.845


<r2> (average value of r2) Å2
<r2> 40.258
(<r2>)1/2 6.345