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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-31.268682
Energy at 298.15K 
HF Energy-31.268682
Nuclear repulsion energy45.202137
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 HF/CEP-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 3716 3349 0.00 652.86 0.33 0.50
2 Ag 2298 2071 0.00 129.69 0.39 0.56
3 Ag 1234 1112 0.00 33.11 0.61 0.76
4 Ag 977 881 0.00 61.32 0.23 0.38
5 Ag 335 302 0.00 20.54 0.45 0.62
6 Au 1043 940 204.79 0.00 0.00 0.00
7 Au 273 246 0.09 0.00 0.00 0.00
8 Bg 748 674 0.00 26.84 0.75 0.86
9 Bu 3716 3350 58.44 0.00 0.00 0.00
10 Bu 1846 1664 289.54 0.00 0.00 0.00
11 Bu 1153 1040 782.85 0.00 0.00 0.00
12 Bu 301 271 10.12 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8819.3 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 7949.7 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 HF/CEP-31G
ABC
9.82930 0.13874 0.13681

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.256 -0.612 0.000
C2 -0.256 0.612 0.000
N3 0.256 -1.863 0.000
N4 -0.256 1.863 0.000
H5 1.160 -2.320 0.000
H6 -1.160 2.320 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.32751.25112.52821.93233.2566
C21.32752.52821.25113.25661.9323
N31.25112.52823.76191.01274.4168
N42.52821.25113.76194.41681.0127
H51.93233.25661.01274.41685.1881
H63.25661.93234.41681.01275.1881

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 157.285 C1 N3 H5 116.812
C2 C1 N3 157.285 C2 N4 H6 116.812
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.297      
2 C -0.297      
3 N -0.012      
4 N -0.012      
5 H 0.309      
6 H 0.309      


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 -20.635 -9.352 0.000
y -9.352 -25.018 0.000
z 0.000 0.000 -23.461
Traceless
 xyz
x 3.604 -9.352 0.000
y -9.352 -2.970 0.000
z 0.000 0.000 -0.634
Polar
3z2-r2-1.268
x2-y24.383
xy-9.352
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.767 -2.651 0.000
y -2.651 11.205 0.000
z 0.000 0.000 2.313


<r2> (average value of r2) Å2
<r2> 66.751
(<r2>)1/2 8.170