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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B3LYP/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-26.574157
Energy at 298.15K-26.576408
HF Energy-26.574157
Nuclear repulsion energy31.438621
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/CEP-121G
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 3599 3507 7.00      
2 A 1235 1203 0.15      
3 A 767 748 14.23      
4 A 654 637 184.53      
5 A 520 507 0.00      
6 B 3601 3509 148.76      
7 B 2170 2115 558.31      
8 B 753 734 642.11      
9 B 524 510 75.61      

Unscaled Zero Point Vibrational Energy (zpe) 6910.8 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 6734.6 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/CEP-121G
ABC
15.02514 0.33154 0.33152

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.043
N2 0.000 1.238 -0.080
N3 0.000 -1.238 -0.080
H4 0.572 1.902 0.432
H5 -0.572 -1.902 0.432

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24371.24372.02412.0241
N21.24372.47521.01533.2322
N31.24372.47523.23221.0153
H42.02411.01533.23223.9727
H52.02413.23221.01533.9727

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 126.989 C1 N3 H5 126.989
N2 C1 N3 168.682
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.349      
2 N -0.129      
3 N -0.129      
4 H 0.304      
5 H 0.304      


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 2.419 2.419
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.233 5.022 0.000
y 5.022 -14.892 0.000
z 0.000 0.000 -17.930
Traceless
 xyz
x -0.822 5.022 0.000
y 5.022 2.690 0.000
z 0.000 0.000 -1.868
Polar
3z2-r2-3.735
x2-y2-2.341
xy5.022
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.936 0.267 0.000
y 0.267 6.674 0.000
z 0.000 0.000 1.908


<r2> (average value of r2) Å2
<r2> 34.073
(<r2>)1/2 5.837