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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: mPW1PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at mPW1PW91/STO-3G
 hartrees
Energy at 0K-184.342984
Energy at 298.15K 
HF Energy-184.342984
Nuclear repulsion energy87.428111
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/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 Ag 3458 3039 0.00 432.39 0.32 0.48
2 Ag 2196 1930 0.00 24.18 0.34 0.50
3 Ag 1266 1113 0.00 37.30 0.73 0.85
4 Ag 967 849 0.00 26.78 0.25 0.39
5 Ag 317 279 0.00 1.05 0.23 0.38
6 Au 968 851 88.18 0.00 0.00 0.00
7 Au 242 213 0.13 0.00 0.00 0.00
8 Bg 699 615 0.00 15.99 0.75 0.86
9 Bu 3456 3037 10.75 0.00 0.00 0.00
10 Bu 1783 1567 16.69 0.00 0.00 0.00
11 Bu 1237 1087 281.31 0.00 0.00 0.00
12 Bu 292 257 4.67 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8440.7 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 7418.5 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 mPW1PW91/STO-3G
ABC
7.22681 0.13826 0.13567

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.298 -0.584 0.000
C2 -0.298 0.584 0.000
N3 0.298 -1.871 0.000
N4 -0.298 1.871 0.000
H5 1.319 -2.212 0.000
H6 -1.319 2.212 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.31081.28782.52651.92213.2299
C21.31082.52651.28783.22991.9221
N31.28782.52653.79011.07614.3923
N42.52651.28783.79014.39231.0761
H51.92213.22991.07614.39235.1512
H63.22991.92214.39231.07615.1512

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 152.929 C1 N3 H5 108.462
C2 C1 N3 152.929 C2 N4 H6 108.462
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.053      
2 C 0.053      
3 N -0.247      
4 N -0.247      
5 H 0.194      
6 H 0.194      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.697 -6.387 0.000
y -6.387 -22.749 0.000
z 0.000 0.000 -20.603
Traceless
 xyz
x 3.979 -6.387 0.000
y -6.387 -3.599 0.000
z 0.000 0.000 -0.380
Polar
3z2-r2-0.760
x2-y25.052
xy-6.387
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.298 -2.443 0.000
y -2.443 7.316 0.000
z 0.000 0.000 0.777


<r2> (average value of r2) Å2
<r2> 81.410
(<r2>)1/2 9.023