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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: CCSD=FULL/TZVP

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/TZVP
 hartrees
Energy at 0K-186.431576
Energy at 298.15K 
HF Energy-185.734962
Nuclear repulsion energy89.542836
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/TZVP
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 3451 3270 0.00      
2 Ag 2135 2023 0.00      
3 Ag 1197 1134 0.00      
4 Ag 934 885 0.00      
5 Ag 359 340 0.00      
6 Au 968 917 125.97      
7 Au 241 229 0.00      
8 Bg 678 643 0.00      
9 Bu 3452 3271 8.09      
10 Bu 1746 1654 146.08      
11 Bu 1166 1105 376.42      
12 Bu 286 271 7.35      

Unscaled Zero Point Vibrational Energy (zpe) 8306.4 cm-1
Scaled (by 0.9475) Zero Point Vibrational Energy (zpe) 7870.4 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 CCSD=FULL/TZVP
ABC
8.50927 0.14308 0.14072

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/TZVP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.274 -0.592 0.000
C2 -0.274 0.592 0.000
N3 0.274 -1.838 0.000
N4 -0.274 1.838 0.000
H5 1.228 -2.206 0.000
H6 -1.228 2.206 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.30491.24622.49121.87493.1760
C21.30492.49121.24623.17601.8749
N31.24622.49123.71701.02234.3143
N42.49121.24623.71704.31431.0223
H51.87493.17601.02234.31435.0499
H63.17601.87494.31431.02235.0499

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 155.129 C1 N3 H5 111.097
C2 C1 N3 155.129 C2 N4 H6 111.097
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability