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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B2PLYP/6-31G**

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/6-31G**
 hartrees
Energy at 0K-148.640884
Energy at 298.15K-148.643256
HF Energy-148.486470
Nuclear repulsion energy59.804265
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/6-31G**
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 3643 3643 21.93      
2 A 1277 1277 0.01      
3 A 934 934 10.06      
4 A 743 743 103.95      
5 A 518 518 0.02      
6 B 3643 3643 102.11      
7 B 2237 2237 494.52      
8 B 927 927 463.55      
9 B 519 519 72.83      

Unscaled Zero Point Vibrational Energy (zpe) 7220.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7220.8 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 B2PLYP/6-31G**
ABC
12.27450 0.34272 0.34271

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.025
N2 0.000 1.227 -0.083
N3 0.000 -1.227 -0.083
H4 0.627 1.763 0.504
H5 -0.627 -1.763 0.504

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23121.23121.93161.9316
N21.23122.45301.01213.1105
N31.23122.45303.11051.0121
H41.93161.01213.11053.7425
H51.93163.11051.01213.7425

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.539 C1 N3 H5 118.539
N2 C1 N3 170.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.589      
2 N -0.582      
3 N -0.582      
4 H 0.288      
5 H 0.288      


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 2.172 2.172
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.517 4.245 0.000
y 4.245 -16.084 0.000
z 0.000 0.000 -17.089
Traceless
 xyz
x 0.069 4.245 0.000
y 4.245 0.719 0.000
z 0.000 0.000 -0.788
Polar
3z2-r2-1.577
x2-y2-0.434
xy4.245
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.824 0.399 0.000
y 0.399 6.041 0.000
z 0.000 0.000 1.801


<r2> (average value of r2) Å2
<r2> 39.016
(<r2>)1/2 6.246