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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-148.736784
Energy at 298.15K-148.739149
HF Energy-148.736784
Nuclear repulsion energy60.052376
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 B1B95/6-31+G**
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 3485 26.87      
2 A 1304 1248 0.11      
3 A 881 842 8.54      
4 A 726 694 115.58      
5 A 535 512 0.27      
6 B 3641 3483 151.57      
7 B 2255 2157 699.66      
8 B 882 844 438.55      
9 B 530 507 83.51      

Unscaled Zero Point Vibrational Energy (zpe) 7197.6 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 6885.2 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 B1B95/6-31+G**
ABC
12.53393 0.34561 0.34557

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.023
N2 0.000 1.220 -0.082
N3 0.000 -1.220 -0.082
H4 0.619 1.769 0.501
H5 -0.619 -1.769 0.501

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22471.22471.93371.9337
N21.22472.44041.01163.1074
N31.22472.44043.10741.0116
H41.93371.01163.10743.7475
H51.93373.10741.01163.7475

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.387 C1 N3 H5 119.387
N2 C1 N3 170.163
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.510      
2 N -0.565      
3 N -0.565      
4 H 0.310      
5 H 0.310      


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 2.268 2.268
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.976 4.556 0.000
y 4.556 -16.527 0.000
z 0.000 0.000 -17.555
Traceless
 xyz
x 0.065 4.556 0.000
y 4.556 0.738 0.000
z 0.000 0.000 -0.803
Polar
3z2-r2-1.606
x2-y2-0.449
xy4.556
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.386 0.193 0.000
y 0.193 6.726 0.000
z 0.000 0.000 2.370


<r2> (average value of r2) Å2
<r2> 39.096
(<r2>)1/2 6.253