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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B3LYP/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 B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-148.795341
Energy at 298.15K-148.797759
HF Energy-148.795341
Nuclear repulsion energy60.121374
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 B3LYP/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 3599 3473 23.97      
2 A 1289 1244 0.00      
3 A 928 895 11.34      
4 A 740 714 90.84      
5 A 546 527 0.06      
6 B 3597 3471 109.29      
7 B 2247 2168 540.21      
8 B 922 890 425.61      
9 B 553 534 73.84      

Unscaled Zero Point Vibrational Energy (zpe) 7209.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 6957.4 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 B3LYP/6-31G(2df,p)
ABC
12.45926 0.34653 0.34646

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/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 0.624 1.760 0.506
H5 -0.624 -1.760 0.506

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22291.22291.93051.9305
N21.22292.43831.01233.0997
N31.22292.43833.09971.0123
H41.93051.01233.09973.7349
H51.93053.09971.01233.7349

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.164 C1 N3 H5 119.164
N2 C1 N3 170.991
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.459      
2 N -0.504      
3 N -0.504      
4 H 0.275      
5 H 0.275      


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 1.978 1.978
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.417 3.959 0.000
y 3.959 -15.928 0.000
z 0.000 0.000 -16.927
Traceless
 xyz
x 0.010 3.959 0.000
y 3.959 0.744 0.000
z 0.000 0.000 -0.755
Polar
3z2-r2-1.509
x2-y2-0.489
xy3.959
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.183 0.405 0.000
y 0.405 5.911 0.000
z 0.000 0.000 2.139


<r2> (average value of r2) Å2
<r2> 38.644
(<r2>)1/2 6.216