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/6-31G

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/6-31G
 hartrees
Energy at 0K-148.692358
Energy at 298.15K-148.694559
HF Energy-148.692358
Nuclear repulsion energy59.067943
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/6-31G
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 3494 7.20      
2 A 1235 1225 0.07      
3 A 797 791 16.52      
4 A 648 643 144.55      
5 A 485 482 0.04      
6 B 3524 3497 94.47      
7 B 2189 2172 396.14      
8 B 796 790 546.60      
9 B 486 483 43.78      

Unscaled Zero Point Vibrational Energy (zpe) 6839.9 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 6787.9 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 BLYP/6-31G
ABC
14.65234 0.33210 0.33205

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.048
N2 0.000 1.236 -0.083
N3 0.000 -1.236 -0.083
H4 0.577 1.902 0.433
H5 -0.577 -1.902 0.433

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24311.24312.02412.0241
N21.24312.47241.02033.2319
N31.24312.47243.23191.0203
H42.02411.02033.23193.9746
H52.02413.23191.02033.9746

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 126.547 C1 N3 H5 126.547
N2 C1 N3 167.909
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.342      
2 N -0.471      
3 N -0.471      
4 H 0.300      
5 H 0.300      


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 2.243 2.243
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.869 4.611 0.000
y 4.611 -14.544 0.000
z 0.000 0.000 -17.532
Traceless
 xyz
x -0.831 4.611 0.000
y 4.611 2.657 0.000
z 0.000 0.000 -1.826
Polar
3z2-r2-3.652
x2-y2-2.325
xy4.611
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.556 0.369 0.000
y 0.369 6.338 0.000
z 0.000 0.000 1.547


<r2> (average value of r2) Å2
<r2> 39.968
(<r2>)1/2 6.322