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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: MP2/6-31G(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 MP2/6-31G(2df,p)
 hartrees
Energy at 0K-186.365614
Energy at 298.15K 
HF Energy-185.695883
Nuclear repulsion energy89.228830
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 MP2/6-31G(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 3460 3268 0.00 530.53 0.31 0.47
2 Ag 2153 2033 0.00 3.55 0.75 0.86
3 Ag 1151 1087 0.00 31.41 0.65 0.79
4 Ag 925 874 0.00 22.95 0.23 0.38
5 Ag 300 283 0.00 2.29 0.27 0.42
6 Au 966 912 122.71 0.00 0.75 0.86
7 Au 255 241 0.15 0.00 0.75 0.86
8 Bg 682 644 0.00 3.86 0.75 0.86
9 Bu 3461 3269 21.83 0.00 0.31 0.47
10 Bu 1720 1625 76.75 0.00 0.00 0.00
11 Bu 1122 1060 377.61 0.00 0.00 0.00
12 Bu 290 274 5.93 0.00 0.28 0.43

Unscaled Zero Point Vibrational Energy (zpe) 8241.5 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 7784.1 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 MP2/6-31G(2df,p)
ABC
9.09877 0.14134 0.13918

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.238 -0.603 0.000
C2 -0.238 0.603 0.000
N3 0.238 -1.856 0.000
N4 -0.238 1.856 0.000
H5 1.192 -2.233 0.000
H6 -1.192 2.233 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.29721.25332.50541.88793.1761
C21.29722.50541.25333.17611.8879
N31.25332.50543.74341.02474.3321
N42.50541.25333.74344.33211.0247
H51.88793.17611.02474.33215.0617
H63.17611.88794.33211.02475.0617

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 158.425 C1 N3 H5 111.549
C2 C1 N3 158.425 C2 N4 H6 111.549
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability