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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: CCSD=FULL/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 CCSD=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-186.547618
Energy at 298.15K 
HF Energy-185.744702
Nuclear repulsion energy89.744148
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 CCSD=FULL/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 3479 3479 0.00      
2 Ag 2214 2214 0.00      
3 Ag 1189 1189 0.00      
4 Ag 936 936 0.00      
5 Ag 278 278 0.00      
6 Au 970 970 119.33      
7 Au 249 249 0.11      
8 Bg 657 657 0.00      
9 Bu 3479 3479 20.02      
10 Bu 1756 1756 164.91      
11 Bu 1172 1172 353.84      
12 Bu 285 285 6.43      

Unscaled Zero Point Vibrational Energy (zpe) 8331.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8331.9 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 CCSD=FULL/6-311+G(3df,2p)
ABC
9.73951 0.14227 0.14022

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.207 -0.612 0.000
C2 -0.207 0.612 0.000
N3 0.207 -1.854 0.000
N4 -0.207 1.854 0.000
H5 1.152 -2.237 0.000
H6 -1.152 2.237 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.29151.24222.50011.88013.1563
C21.29152.50011.24223.15631.8801
N31.24222.50013.73081.01964.3108
N42.50011.24223.73084.31081.0196
H51.88013.15631.01964.31085.0325
H63.15631.88014.31081.01965.0325

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 161.314 C1 N3 H5 112.081
C2 C1 N3 161.314 C2 N4 H6 112.081
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability