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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-148.736254
Energy at 298.15K-148.738669
HF Energy-148.736254
Nuclear repulsion energy60.159629
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 B3PW91/6-31G(2df,p)
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 3627 3487 27.18      
2 A 1296 1246 0.00      
3 A 920 885 11.55      
4 A 737 709 93.18      
5 A 548 527 0.11      
6 B 3625 3485 120.86      
7 B 2261 2174 549.14      
8 B 915 880 418.82      
9 B 554 533 79.07      

Unscaled Zero Point Vibrational Energy (zpe) 7241.9 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 6962.4 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 B3PW91/6-31G(2df,p)
ABC
12.42234 0.34701 0.34694

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.017
N2 0.000 1.219 -0.079
N3 0.000 -1.219 -0.079
H4 0.625 1.756 0.507
H5 -0.625 -1.756 0.507

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22231.22231.92731.9273
N21.22232.43711.01143.0955
N31.22232.43713.09551.0114
H41.92731.01143.09553.7277
H51.92733.09551.01143.7277

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.958 C1 N3 H5 118.958
N2 C1 N3 170.993
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.501      
2 N -0.546      
3 N -0.546      
4 H 0.295      
5 H 0.295      


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 1.996 1.996
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.350 4.012 0.000
y 4.012 -15.778 0.000
z 0.000 0.000 -16.869
Traceless
 xyz
x -0.027 4.012 0.000
y 4.012 0.832 0.000
z 0.000 0.000 -0.805
Polar
3z2-r2-1.610
x2-y2-0.573
xy4.012
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.191 0.381 0.000
y 0.381 5.897 0.000
z 0.000 0.000 2.150


<r2> (average value of r2) Å2
<r2> 38.541
(<r2>)1/2 6.208