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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBEPBEultrafine/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBEultrafine/6-311+G(3df,2p)
 hartrees
Energy at 0K-148.673370
Energy at 298.15K-148.675721
HF Energy-148.673370
Nuclear repulsion energy59.818232
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 PBEPBEultrafine/6-311+G(3df,2p)
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 3521 3521 21.14      
2 A 1254 1254 0.01      
3 A 888 888 10.48      
4 A 691 691 85.79      
5 A 526 526 0.59      
6 B 3520 3520 117.15      
7 B 2181 2181 579.55      
8 B 887 887 401.01      
9 B 530 530 66.56      

Unscaled Zero Point Vibrational Energy (zpe) 6999.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6999.3 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 PBEPBEultrafine/6-311+G(3df,2p)
ABC
12.48518 0.34313 0.34302

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.027
N2 0.000 1.224 -0.083
N3 0.000 -1.224 -0.083
H4 0.618 1.785 0.500
H5 -0.618 -1.785 0.500

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22871.22871.94701.9470
N21.22872.44741.01843.1261
N31.22872.44743.12611.0184
H41.94701.01843.12613.7776
H51.94703.12611.01843.7776

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.806 C1 N3 H5 119.806
N2 C1 N3 169.670
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.303      
2 N -0.854      
3 N -0.854      
4 H 0.202      
5 H 0.202      


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 1.910 1.910
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.189 4.082 0.000
y 4.082 -16.229 0.000
z 0.000 0.000 -17.696
Traceless
 xyz
x -0.227 4.082 0.000
y 4.082 1.214 0.000
z 0.000 0.000 -0.987
Polar
3z2-r2-1.974
x2-y2-0.960
xy4.082
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.122 0.246 0.000
y 0.246 7.033 0.000
z 0.000 0.000 3.096


<r2> (average value of r2) Å2
<r2> 39.342
(<r2>)1/2 6.272