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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: mPW1PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-148.800400
Energy at 298.15K-148.802812
HF Energy-148.800400
Nuclear repulsion energy60.433214
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 mPW1PW91/6-311+G(3df,2p)
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 3646 3646 27.23      
2 A 1307 1307 0.00      
3 A 910 910 12.83      
4 A 722 722 92.93      
5 A 550 550 0.51      
6 B 3643 3643 158.46      
7 B 2254 2254 715.35      
8 B 910 910 430.70      
9 B 554 554 83.59      

Unscaled Zero Point Vibrational Energy (zpe) 7247.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7247.8 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 mPW1PW91/6-311+G(3df,2p)
ABC
12.72577 0.35004 0.35001

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.016
N2 0.000 1.212 -0.078
N3 0.000 -1.212 -0.078
H4 0.617 1.760 0.502
H5 -0.617 -1.760 0.502

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21591.21591.92701.9270
N21.21592.42451.00863.0902
N31.21592.42453.09021.0086
H41.92701.00863.09023.7290
H51.92703.09021.00863.7290

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.765 C1 N3 H5 119.765
N2 C1 N3 171.117
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.465      
2 N -0.932      
3 N -0.932      
4 H 0.200      
5 H 0.200      


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 1.979 1.979
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.964 4.147 0.000
y 4.147 -16.317 0.000
z 0.000 0.000 -17.472
Traceless
 xyz
x -0.069 4.147 0.000
y 4.147 0.901 0.000
z 0.000 0.000 -0.831
Polar
3z2-r2-1.662
x2-y2-0.647
xy4.147
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.981 0.228 0.000
y 0.228 6.679 0.000
z 0.000 0.000 2.953


<r2> (average value of r2) Å2
<r2> 38.685
(<r2>)1/2 6.220