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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B1B95/STO-3G

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/STO-3G
 hartrees
Energy at 0K-146.770426
Energy at 298.15K-146.772665
HF Energy-146.770426
Nuclear repulsion energy58.060671
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/STO-3G
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 3549 3134 0.26      
2 A 1243 1097 1.22      
3 A 1064 940 0.77      
4 A 872 770 57.11      
5 A 477 421 0.69      
6 B 3560 3143 37.38      
7 B 2265 2000 139.70      
8 B 1023 904 344.83      
9 B 479 423 40.73      

Unscaled Zero Point Vibrational Energy (zpe) 7265.6 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 6415.5 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/STO-3G
ABC
9.57157 0.32785 0.32736

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.067
N2 0.000 1.257 -0.105
N3 0.000 -1.257 -0.105
H4 0.691 1.750 0.536
H5 -0.691 -1.750 0.536

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.26931.26931.93891.9389
N21.26932.51501.06373.1517
N31.26932.51503.15171.0637
H41.93891.06373.15173.7628
H51.93893.15171.06373.7628

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 112.113 C1 N3 H5 112.113
N2 C1 N3 164.338
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.201      
2 N -0.305      
3 N -0.305      
4 H 0.205      
5 H 0.205      


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 2.103 2.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.008 3.705 0.000
y 3.705 -16.097 0.000
z 0.000 0.000 -15.660
Traceless
 xyz
x 0.870 3.705 0.000
y 3.705 -0.763 0.000
z 0.000 0.000 -0.107
Polar
3z2-r2-0.214
x2-y21.089
xy3.705
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.903 0.660 0.000
y 0.660 4.375 0.000
z 0.000 0.000 0.809


<r2> (average value of r2) Å2
<r2> 39.711
(<r2>)1/2 6.302