return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: wB97X-D/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at wB97X-D/CEP-121G
 hartrees
Energy at 0K-26.571870
Energy at 298.15K-26.574113
HF Energy-26.571870
Nuclear repulsion energy31.616643
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 wB97X-D/CEP-121G
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 3700 3700 11.43      
2 A 1272 1272 0.04      
3 A 718 718 14.12      
4 A 649 649 225.89      
5 A 538 538 0.65      
6 B 3702 3702 232.15      
7 B 2229 2229 703.16      
8 B 719 719 666.93      
9 B 542 542 109.81      

Unscaled Zero Point Vibrational Energy (zpe) 7033.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7033.9 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 wB97X-D/CEP-121G
ABC
16.31463 0.33473 0.33460

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.036
N2 0.000 1.230 -0.075
N3 0.000 -1.230 -0.075
H4 0.554 1.915 0.417
H5 -0.554 -1.915 0.417

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23491.23492.02982.0298
N21.23492.46001.00933.2312
N31.23492.46003.23121.0093
H42.02981.00933.23123.9872
H52.02983.23121.00933.9872

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 129.222 C1 N3 H5 129.222
N2 C1 N3 169.747
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.295      
2 N -0.175      
3 N -0.175      
4 H 0.322      
5 H 0.322      


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 2.463 2.463
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.185 5.135 0.000
y 5.135 -14.434 0.000
z 0.000 0.000 -17.867
Traceless
 xyz
x -1.035 5.135 0.000
y 5.135 3.092 0.000
z 0.000 0.000 -2.057
Polar
3z2-r2-4.115
x2-y2-2.751
xy5.135
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.870 0.173 0.000
y 0.173 6.593 0.000
z 0.000 0.000 1.842


<r2> (average value of r2) Å2
<r2> 33.790
(<r2>)1/2 5.813