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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: CCSD/daug-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 CCSD/daug-cc-pVDZ
 hartrees
Energy at 0K-186.326642
Energy at 298.15K 
HF Energy-185.703200
Nuclear repulsion energy88.453425
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/daug-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 3424 3424 0.00      
2 Ag 2080 2080 0.00      
3 Ag 1191 1191 0.00      
4 Ag 914 914 0.00      
5 Ag 314 314 0.00      
6 Au 946 946 113.58      
7 Au 241 241 0.02      
8 Bg 680 680 0.00      
9 Bu 3424 3424 15.90      
10 Bu 1718 1718 153.83      
11 Bu 1160 1160 380.44      
12 Bu 277 277 5.14      

Unscaled Zero Point Vibrational Energy (zpe) 8183.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8183.9 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/daug-cc-pVDZ
ABC
8.00811 0.13990 0.13750

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.298 -0.594 0.000
C2 -0.298 0.594 0.000
N3 0.298 -1.855 0.000
N4 -0.298 1.855 0.000
H5 1.260 -2.222 0.000
H6 -1.260 2.222 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.32981.26042.52071.89093.2188
C21.32982.52071.26043.21881.8909
N31.26042.52073.75721.02994.3646
N42.52071.26043.75724.36461.0299
H51.89093.21881.02994.36465.1092
H63.21881.89094.36461.02995.1092

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 153.365 C1 N3 H5 110.896
C2 C1 N3 153.365 C2 N4 H6 110.896
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability