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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-148.736461
Energy at 298.15K-148.738853
HF Energy-148.736461
Nuclear repulsion energy60.053813
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 mPW1PW91/6-31G*
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 3633 3445 23.70      
2 A 1311 1243 0.11      
3 A 934 886 11.02      
4 A 752 713 112.05      
5 A 532 505 0.01      
6 B 3632 3444 102.73      
7 B 2278 2160 570.41      
8 B 933 885 462.49      
9 B 533 505 75.77      

Unscaled Zero Point Vibrational Energy (zpe) 7268.1 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 6892.3 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 mPW1PW91/6-31G*
ABC
12.36999 0.34579 0.34572

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.020
N2 0.000 1.221 -0.081
N3 0.000 -1.221 -0.081
H4 0.626 1.759 0.505
H5 -0.626 -1.759 0.505

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22491.22491.92891.9289
N21.22492.44151.01213.1004
N31.22492.44153.10041.0121
H41.92891.01213.10043.7338
H51.92893.10041.01213.7338

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.839 C1 N3 H5 118.839
N2 C1 N3 170.604
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.625      
2 N -0.676      
3 N -0.676      
4 H 0.363      
5 H 0.363      


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 2.242 2.242
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.403 4.366 0.000
y 4.366 -15.977 0.000
z 0.000 0.000 -16.987
Traceless
 xyz
x 0.078 4.366 0.000
y 4.366 0.718 0.000
z 0.000 0.000 -0.796
Polar
3z2-r2-1.593
x2-y2-0.426
xy4.366
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.795 0.372 0.000
y 0.372 5.857 0.000
z 0.000 0.000 1.765


<r2> (average value of r2) Å2
<r2> 38.715
(<r2>)1/2 6.222