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: BLYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-148.794669
Energy at 298.15K-148.797022
HF Energy-148.794669
Nuclear repulsion energy59.652850
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 BLYP/6-311G**
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 3477 3463 18.12      
2 A 1237 1232 0.00      
3 A 911 907 8.01      
4 A 707 705 92.96      
5 A 517 515 0.28      
6 B 3477 3463 72.87      
7 B 2165 2157 474.86      
8 B 909 905 411.12      
9 B 520 518 60.64      

Unscaled Zero Point Vibrational Energy (zpe) 6959.3 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 6932.2 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 BLYP/6-311G**
ABC
12.24603 0.34134 0.34129

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.026
N2 0.000 1.228 -0.083
N3 0.000 -1.228 -0.083
H4 0.626 1.779 0.504
H5 -0.626 -1.779 0.504

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23261.23261.94591.9459
N21.23262.45551.02063.1274
N31.23262.45553.12741.0206
H41.94591.02063.12743.7727
H51.94593.12741.02063.7727

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.151 C1 N3 H5 119.151
N2 C1 N3 169.778
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.326      
2 N -0.380      
3 N -0.380      
4 H 0.217      
5 H 0.217      


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 2.056 2.056
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.714 4.106 0.000
y 4.106 -16.125 0.000
z 0.000 0.000 -17.266
Traceless
 xyz
x -0.019 4.106 0.000
y 4.106 0.865 0.000
z 0.000 0.000 -0.847
Polar
3z2-r2-1.693
x2-y2-0.590
xy4.106
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.090 0.387 0.000
y 0.387 6.178 0.000
z 0.000 0.000 2.067


<r2> (average value of r2) Å2
<r2> 39.261
(<r2>)1/2 6.266