return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: B1B95/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B1B95/aug-cc-pVDZ
 hartrees
Energy at 0K-186.762802
Energy at 298.15K 
HF Energy-186.762802
Nuclear repulsion energy89.512541
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/aug-cc-pVDZ
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 3431 3286 0.00 693.88 0.30 0.46
2 Ag 2193 2100 0.00 31.62 0.38 0.55
3 Ag 1173 1124 0.00 27.27 0.55 0.71
4 Ag 945 906 0.00 51.30 0.16 0.28
5 Ag 317 304 0.00 2.97 0.55 0.71
6 Au 960 920 120.24 0.00 0.00 0.00
7 Au 252 241 0.01 0.00 0.00 0.00
8 Bg 682 653 0.00 3.85 0.75 0.86
9 Bu 3431 3287 15.94 0.00 0.30 0.46
10 Bu 1781 1706 198.19 0.00 0.00 0.00
11 Bu 1140 1092 361.50 0.00 0.00 0.00
12 Bu 283 271 6.15 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8293.7 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 7944.5 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/aug-cc-pVDZ
ABC
9.09346 0.14228 0.14009

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.247 -0.603 0.000
C2 -0.247 0.603 0.000
N3 0.247 -1.847 0.000
N4 -0.247 1.847 0.000
H5 1.196 -2.235 0.000
H6 -1.196 2.235 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.30291.24372.49871.88773.1833
C21.30292.49871.24373.18331.8877
N31.24372.49873.72591.02514.3288
N42.49871.24373.72594.32881.0251
H51.88773.18331.02514.32885.0692
H63.18331.88774.32881.02515.0692

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 157.715 C1 N3 H5 112.254
C2 C1 N3 157.715 C2 N4 H6 112.254
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.157      
2 C 0.157      
3 N -0.222      
4 N -0.222      
5 H 0.066      
6 H 0.066      


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 -20.401 -7.265 0.000
y -7.265 -23.863 0.000
z 0.000 0.000 -22.999
Traceless
 xyz
x 3.030 -7.265 0.000
y -7.265 -2.163 0.000
z 0.000 0.000 -0.867
Polar
3z2-r2-1.735
x2-y23.462
xy-7.265
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.886 -2.010 0.000
y -2.010 11.425 0.000
z 0.000 0.000 3.666


<r2> (average value of r2) Å2
<r2> 80.534
(<r2>)1/2 8.974