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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B3PW91/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 B3PW91/cc-pVDZ
 hartrees
Energy at 0K-148.734956
Energy at 298.15K-148.737357
HF Energy-148.734956
Nuclear repulsion energy59.870703
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 B3PW91/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 3577 3452 27.26      
2 A 1291 1246 0.05      
3 A 944 911 7.73      
4 A 744 718 88.32      
5 A 526 507 0.14      
6 B 3577 3452 101.40      
7 B 2252 2173 543.53      
8 B 941 908 385.19      
9 B 529 511 67.86      

Unscaled Zero Point Vibrational Energy (zpe) 7190.9 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 6939.2 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 B3PW91/cc-pVDZ
ABC
11.72571 0.34455 0.34454

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.018
N2 0.000 1.225 -0.082
N3 0.000 -1.225 -0.082
H4 0.640 1.739 0.523
H5 -0.640 -1.739 0.523

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22881.22881.92061.9206
N21.22882.44941.01983.0918
N31.22882.44943.09181.0198
H41.92061.01983.09183.7061
H51.92063.09181.01983.7061

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.023 C1 N3 H5 117.023
N2 C1 N3 170.644
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.163      
2 N -0.226      
3 N -0.226      
4 H 0.145      
5 H 0.145      


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 2.065 2.065
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.314 3.990 0.000
y 3.990 -16.056 0.000
z 0.000 0.000 -16.843
Traceless
 xyz
x 0.135 3.990 0.000
y 3.990 0.522 0.000
z 0.000 0.000 -0.657
Polar
3z2-r2-1.315
x2-y2-0.258
xy3.990
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.948 0.405 0.000
y 0.405 5.783 0.000
z 0.000 0.000 1.914


<r2> (average value of r2) Å2
<r2> 38.755
(<r2>)1/2 6.225