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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: mPW1PW91/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-186.769796
Energy at 298.15K 
HF Energy-186.769796
Nuclear repulsion energy89.807037
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(2df,p)
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 3436 3280 0.00 673.51 0.31 0.47
2 Ag 2238 2136 0.00 25.35 0.36 0.53
3 Ag 1172 1119 0.00 22.06 0.70 0.82
4 Ag 952 909 0.00 38.24 0.26 0.41
5 Ag 291 278 0.00 2.29 0.46 0.63
6 Au 975 931 123.96 0.00 0.00 0.00
7 Au 261 250 0.25 0.00 0.00 0.00
8 Bg 678 647 0.00 6.82 0.75 0.86
9 Bu 3436 3281 7.43 0.00 0.00 0.00
10 Bu 1791 1710 160.29 0.00 0.00 0.00
11 Bu 1149 1097 361.46 0.00 0.00 0.00
12 Bu 294 281 6.21 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8336.1 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 7958.5 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 mPW1PW91/6-31G(2df,p)
ABC
9.73996 0.14257 0.14051

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.206 -0.611 0.000
C2 -0.206 0.611 0.000
N3 0.206 -1.852 0.000
N4 -0.206 1.852 0.000
H5 1.153 -2.241 0.000
H6 -1.153 2.241 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.28941.24062.49671.88483.1587
C21.28942.49671.24063.15871.8848
N31.24062.49673.72601.02374.3119
N42.49671.24063.72604.31191.0237
H51.88483.15871.02374.31195.0396
H63.15871.88484.31191.02375.0396

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 161.393 C1 N3 H5 112.343
C2 C1 N3 161.393 C2 N4 H6 112.343
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.214      
2 C 0.214      
3 N -0.496      
4 N -0.496      
5 H 0.282      
6 H 0.282      


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 -19.854 -7.112 0.000
y -7.112 -22.990 0.000
z 0.000 0.000 -22.302
Traceless
 xyz
x 2.792 -7.112 0.000
y -7.112 -1.912 0.000
z 0.000 0.000 -0.880
Polar
3z2-r2-1.760
x2-y23.136
xy-7.112
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.672 -1.994 0.000
y -1.994 10.228 0.000
z 0.000 0.000 2.533


<r2> (average value of r2) Å2
<r2> 79.840
(<r2>)1/2 8.935