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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B3LYP/SDD

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/SDD
 hartrees
Energy at 0K-148.746518
Energy at 298.15K-148.748727
HF Energy-148.746518
Nuclear repulsion energy59.310529
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/SDD
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 3686 3544 15.66      
2 A 1272 1223 0.02      
3 A 729 701 16.26      
4 A 639 614 196.01      
5 A 528 508 0.34      
6 B 3686 3544 230.28      
7 B 2255 2167 600.78      
8 B 723 695 614.90      
9 B 535 515 85.43      

Unscaled Zero Point Vibrational Energy (zpe) 7026.8 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 6754.8 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/SDD
ABC
16.39489 0.33341 0.33333

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.038
N2 0.000 1.232 -0.076
N3 0.000 -1.232 -0.076
H4 0.551 1.925 0.415
H5 -0.551 -1.925 0.415

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23701.23702.03782.0378
N21.23702.46351.01273.2421
N31.23702.46353.24211.0127
H42.03781.01273.24214.0053
H52.03783.24211.01274.0053

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 129.604 C1 N3 H5 129.604
N2 C1 N3 169.453
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.090      
2 N -0.347      
3 N -0.347      
4 H 0.302      
5 H 0.302      


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 2.321 2.321
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.223 4.876 0.000
y 4.876 -14.359 0.000
z 0.000 0.000 -17.879
Traceless
 xyz
x -1.104 4.876 0.000
y 4.876 3.192 0.000
z 0.000 0.000 -2.088
Polar
3z2-r2-4.176
x2-y2-2.864
xy4.876
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.723 0.222 0.000
y 0.222 6.540 0.000
z 0.000 0.000 1.704


<r2> (average value of r2) Å2
<r2> 39.992
(<r2>)1/2 6.324