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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: QCISD/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at QCISD/6-311+G(3df,2p)
 hartrees
Energy at 0K-186.457660
Energy at 298.15K 
HF Energy-185.743142
Nuclear repulsion energy89.485122
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 QCISD/6-311+G(3df,2p)
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 3470 3309 0.00      
2 Ag 2155 2055 0.00      
3 Ag 1188 1133 0.00      
4 Ag 926 883 0.00      
5 Ag 299 285 0.00      
6 Au 961 917 117.76      
7 Au 246 235 0.05      
8 Bg 667 637 0.00      
9 Bu 3470 3309 21.47      
10 Bu 1738 1657 167.72      
11 Bu 1162 1109 383.51      
12 Bu 282 269 5.26      

Unscaled Zero Point Vibrational Energy (zpe) 8281.9 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 7898.4 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 QCISD/6-311+G(3df,2p)
ABC
9.09046 0.14214 0.13995

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311+G(3df,2p)

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 -1.848 0.000
N4 -0.247 1.848 0.000
H5 1.194 -2.229 0.000
H6 -1.194 2.229 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.30221.24592.50011.88233.1771
C21.30222.50011.24593.17711.8823
N31.24592.50013.72971.02104.3246
N42.50011.24593.72974.32461.0210
H51.88233.17711.02104.32465.0575
H63.17711.88234.32461.02105.0575

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 157.734 C1 N3 H5 111.888
C2 C1 N3 157.734 C2 N4 H6 111.888
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability