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: B97D3/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B97D3/3-21G*
 hartrees
Energy at 0K-147.860339
Energy at 298.15K-147.862640
HF Energy-147.860339
Nuclear repulsion energy59.510060
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 B97D3/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3473 3473 12.31      
2 A 1254 1254 0.31      
3 A 827 827 11.73      
4 A 664 664 137.43      
5 A 528 528 0.44      
6 B 3476 3476 91.07      
7 B 2240 2240 325.38      
8 B 827 827 531.89      
9 B 540 540 63.15      

Unscaled Zero Point Vibrational Energy (zpe) 6913.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6913.7 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 B97D3/3-21G*
ABC
14.14801 0.33794 0.33768

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.029
N2 0.000 1.228 -0.077
N3 0.000 -1.228 -0.077
H4 0.597 1.864 0.455
H5 -0.597 -1.864 0.455

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23221.23222.00282.0028
N21.23222.45511.02223.1931
N31.23222.45513.19311.0222
H42.00281.02223.19313.9138
H52.00283.19311.02223.9138

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 125.090 C1 N3 H5 125.090
N2 C1 N3 170.077
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.739      
2 N -0.681      
3 N -0.681      
4 H 0.312      
5 H 0.312      


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 2.212 2.212
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.433 4.516 0.000
y 4.516 -14.560 0.000
z 0.000 0.000 -17.094
Traceless
 xyz
x -0.606 4.516 0.000
y 4.516 2.204 0.000
z 0.000 0.000 -1.598
Polar
3z2-r2-3.196
x2-y2-1.873
xy4.516
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.339 0.401 0.000
y 0.401 5.645 0.000
z 0.000 0.000 1.288


<r2> (average value of r2) Å2
<r2> 39.271
(<r2>)1/2 6.267