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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B2PLYP/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 B2PLYP/6-31G(2df,p)
 hartrees
Energy at 0K-148.672913
Energy at 298.15K-148.675326
HF Energy-148.497858
Nuclear repulsion energy60.034989
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 B2PLYP/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 3633 3469 27.53      
2 A 1274 1216 0.01      
3 A 930 888 11.07      
4 A 741 708 92.61      
5 A 544 519 0.08      
6 B 3632 3468 125.28      
7 B 2238 2138 501.31      
8 B 920 879 442.70      
9 B 551 526 78.79      

Unscaled Zero Point Vibrational Energy (zpe) 7230.4 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 6905.0 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 B2PLYP/6-31G(2df,p)
ABC
12.40987 0.34541 0.34537

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.020
N2 0.000 1.221 -0.081
N3 0.000 -1.221 -0.081
H4 0.624 1.759 0.505
H5 -0.624 -1.759 0.505

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22561.22561.92871.9287
N21.22562.44301.01083.1012
N31.22562.44303.10121.0108
H41.92871.01083.10123.7336
H51.92873.10121.01083.7336

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.871 C1 N3 H5 118.871
N2 C1 N3 170.598
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.407      
2 N -0.492      
3 N -0.492      
4 H 0.288      
5 H 0.288      


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 1.998 1.998
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.491 4.011 0.000
y 4.011 -15.897 0.000
z 0.000 0.000 -17.015
Traceless
 xyz
x -0.035 4.011 0.000
y 4.011 0.856 0.000
z 0.000 0.000 -0.821
Polar
3z2-r2-1.641
x2-y2-0.594
xy4.011
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.178 0.384 0.000
y 0.384 6.014 0.000
z 0.000 0.000 2.138


<r2> (average value of r2) Å2
<r2> 38.746
(<r2>)1/2 6.225