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: B3LYP/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYP/aug-cc-pVQZ
 hartrees
Energy at 0K-148.860054
Energy at 298.15K-148.862458
HF Energy-148.860054
Nuclear repulsion energy60.323623
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 B3LYP/aug-cc-pVQZ
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 3596 3484 23.81      
2 A 1289 1249 0.00      
3 A 917 888 14.26      
4 A 716 693 89.76      
5 A 545 528 0.44      
6 B 3593 3481 149.27      
7 B 2217 2148 704.40      
8 B 915 887 444.82      
9 B 548 531 72.54      

Unscaled Zero Point Vibrational Energy (zpe) 7167.0 cm-1
Scaled (by 0.9689) Zero Point Vibrational Energy (zpe) 6944.1 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 B3LYP/aug-cc-pVQZ
ABC
12.85892 0.34855 0.34854

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVQZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.018
N2 0.000 1.214 -0.079
N3 0.000 -1.214 -0.079
H4 0.613 1.771 0.498
H5 -0.613 -1.771 0.498

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21801.21801.93451.9345
N21.21802.42831.00943.1016
N31.21802.42833.10161.0094
H41.93451.00943.10163.7479
H51.93453.10161.00943.7479

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.282 C1 N3 H5 120.282
N2 C1 N3 170.855
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.563      
2 N -0.619      
3 N -0.619      
4 H 0.338      
5 H 0.338      


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 1.940 1.940
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.134 4.087 0.000
y 4.087 -16.447 0.000
z 0.000 0.000 -17.638
Traceless
 xyz
x -0.091 4.087 0.000
y 4.087 0.939 0.000
z 0.000 0.000 -0.848
Polar
3z2-r2-1.695
x2-y2-0.687
xy4.087
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.178 0.245 0.000
y 0.245 6.881 0.000
z 0.000 0.000 3.151


<r2> (average value of r2) Å2
<r2> 38.912
(<r2>)1/2 6.238