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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: QCISD/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-186.458142
Energy at 298.15K 
HF Energy-185.744172
Nuclear repulsion energy89.461974
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/cc-pVTZ
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 3452 3299 0.00      
2 Ag 2171 2074 0.00      
3 Ag 1196 1142 0.00      
4 Ag 927 885 0.00      
5 Ag 279 267 0.00      
6 Au 966 923 120.72      
7 Au 249 238 0.07      
8 Bg 664 635 0.00      
9 Bu 3453 3299 13.23      
10 Bu 1738 1661 145.23      
11 Bu 1173 1121 389.48      
12 Bu 286 274 5.42      

Unscaled Zero Point Vibrational Energy (zpe) 8276.9 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 7908.6 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/cc-pVTZ
ABC
9.15964 0.14190 0.13973

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.237 -0.606 0.000
C2 -0.237 0.606 0.000
N3 0.237 -1.853 0.000
N4 -0.237 1.853 0.000
H5 1.188 -2.223 0.000
H6 -1.188 2.223 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.30051.24702.50331.87643.1673
C21.30052.50331.24703.16731.8764
N31.24702.50333.73531.02054.3176
N42.50331.24703.73534.31761.0205
H51.87643.16731.02054.31765.0412
H63.16731.87644.31761.02055.0412

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 158.621 C1 N3 H5 111.294
C2 C1 N3 158.621 C2 N4 H6 111.294
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability