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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B2PLYP/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 B2PLYP/3-21G
 hartrees
Energy at 0K-147.754120
Energy at 298.15K-147.756446
HF Energy-147.643121
Nuclear repulsion energy59.721169
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 B2PLYP/3-21G
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 3576 3576 17.52      
2 A 1273 1273 0.37      
3 A 837 837 20.84      
4 A 687 687 145.05      
5 A 532 532 1.24      
6 B 3577 3577 136.44      
7 B 2274 2274 361.04      
8 B 828 828 614.89      
9 B 541 541 70.28      

Unscaled Zero Point Vibrational Energy (zpe) 7062.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7062.0 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 B2PLYP/3-21G
ABC
14.97844 0.33955 0.33933

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.028
N2 0.000 1.223 -0.075
N3 0.000 -1.223 -0.075
H4 0.580 1.875 0.444
H5 -0.580 -1.875 0.444

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22771.22772.00612.0061
N21.22772.44671.01503.1946
N31.22772.44673.19461.0150
H42.00611.01503.19463.9253
H52.00613.19461.01503.9253

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 126.628 C1 N3 H5 126.628
N2 C1 N3 170.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.729      
2 N -0.681      
3 N -0.681      
4 H 0.316      
5 H 0.316      


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 2.248 2.248
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.606 4.543 0.000
y 4.543 -14.563 0.000
z 0.000 0.000 -17.240
Traceless
 xyz
x -0.704 4.543 0.000
y 4.543 2.360 0.000
z 0.000 0.000 -1.656
Polar
3z2-r2-3.312
x2-y2-2.043
xy4.543
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.278 0.372 0.000
y 0.372 5.755 0.000
z 0.000 0.000 1.239


<r2> (average value of r2) Å2
<r2> 39.213
(<r2>)1/2 6.262