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: B3LYPultrafine/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYPultrafine/6-311+G(3df,2p)
 hartrees
Energy at 0K-148.846254
Energy at 298.15K-148.848656
HF Energy-148.846254
Nuclear repulsion energy60.290882
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 B3LYPultrafine/6-311+G(3df,2p)
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 3600 3600 25.11      
2 A 1289 1289 0.00      
3 A 911 911 13.63      
4 A 716 716 91.81      
5 A 544 544 0.40      
6 B 3598 3598 148.84      
7 B 2221 2221 700.43      
8 B 911 911 442.93      
9 B 548 548 74.71      

Unscaled Zero Point Vibrational Energy (zpe) 7168.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7168.8 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 B3LYPultrafine/6-311+G(3df,2p)
ABC
12.83280 0.34823 0.34821

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.018
N2 0.000 1.215 -0.079
N3 0.000 -1.215 -0.079
H4 0.613 1.772 0.499
H5 -0.613 -1.772 0.499

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21861.21861.93611.9361
N21.21862.42931.01063.1036
N31.21862.42933.10361.0106
H41.93611.01063.10363.7508
H51.93613.10361.01063.7508

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.290 C1 N3 H5 120.290
N2 C1 N3 170.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.255      
2 N -0.854      
3 N -0.854      
4 H 0.226      
5 H 0.226      


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 1.970 1.970
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.149 4.136 0.000
y 4.136 -16.487 0.000
z 0.000 0.000 -17.652
Traceless
 xyz
x -0.080 4.136 0.000
y 4.136 0.914 0.000
z 0.000 0.000 -0.834
Polar
3z2-r2-1.668
x2-y2-0.662
xy4.136
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.021 0.232 0.000
y 0.232 6.819 0.000
z 0.000 0.000 2.994


<r2> (average value of r2) Å2
<r2> 38.955
(<r2>)1/2 6.241