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All results from a given calculation for HNCCNH (Ethenediimine)

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 C2H 1AG
Energy calculated at mPW1PW91/6-31G
 hartrees
Energy at 0K-186.684757
Energy at 298.15K 
HF Energy-186.684757
Nuclear repulsion energy89.065527
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 Ag 3405 3223 0.00 844.53 0.32 0.48
2 Ag 2210 2092 0.00 26.32 0.37 0.54
3 Ag 1168 1106 0.00 32.79 0.69 0.82
4 Ag 952 901 0.00 36.07 0.30 0.46
5 Ag 374 354 0.00 4.37 0.38 0.55
6 Au 979 927 174.65 0.00 0.00 0.00
7 Au 257 243 0.22 0.00 0.00 0.00
8 Bg 708 670 0.00 16.26 0.75 0.86
9 Bu 3407 3225 0.23 0.00 0.00 0.00
10 Bu 1784 1689 136.76 0.00 0.00 0.00
11 Bu 1091 1033 543.60 0.00 0.00 0.00
12 Bu 285 270 10.73 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8310.4 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 7866.6 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
9.57577 0.14079 0.13875

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.253 -0.600 0.000
C2 -0.253 0.600 0.000
N3 0.253 -1.852 0.000
N4 -0.253 1.852 0.000
H5 1.174 -2.307 0.000
H6 -1.174 2.307 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.30131.25222.50301.94003.2377
C21.30132.50301.25223.23771.9400
N31.25222.50303.73801.02734.3967
N42.50301.25223.73804.39671.0273
H51.94003.23771.02734.39675.1768
H63.23771.94004.39671.02735.1768

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 157.149 C1 N3 H5 116.303
C2 C1 N3 157.149 C2 N4 H6 116.303
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 0.195      
2 C 0.195      
3 N -0.515      
4 N -0.515      
5 H 0.321      
6 H 0.321      


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 -19.983 -8.594 0.000
y -8.594 -22.948 0.000
z 0.000 0.000 -22.523
Traceless
 xyz
x 2.753 -8.594 0.000
y -8.594 -1.695 0.000
z 0.000 0.000 -1.058
Polar
3z2-r2-2.115
x2-y22.965
xy-8.594
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.382 -2.341 0.000
y -2.341 10.342 0.000
z 0.000 0.000 1.759


<r2> (average value of r2) Å2
<r2> 81.012
(<r2>)1/2 9.001