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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: MP4/aug-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 MP4/aug-cc-pVTZ
 hartrees
Energy at 0K-186.517225
Energy at 298.15K 
HF Energy-185.742219
Nuclear repulsion energy88.789699
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 MP4/aug-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 3404 3313        
2 Ag 2001 1947        
3 Ag 1158 1127        
4 Ag 893 870        
5 Ag 340 331        
6 Au 928 903        
7 Au 242 236        
8 Bg 692 673        
9 Bu 3405 3313        
10 Bu 1668 1623        
11 Bu 1112 1082        
12 Bu 279 271        

Unscaled Zero Point Vibrational Energy (zpe) 8060.9 cm-1
Scaled (by 0.9732) Zero Point Vibrational Energy (zpe) 7844.8 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 MP4/aug-cc-pVTZ
ABC
7.91881 0.14138 0.13890

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.310 -0.584 0.000
C2 -0.310 0.584 0.000
N3 0.310 -1.842 0.000
N4 -0.310 1.842 0.000
H5 1.263 -2.219 0.000
H6 -1.263 2.219 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.32131.25872.50381.89323.2139
C21.32132.50381.25873.21391.8932
N31.25872.50383.73641.02484.3555
N42.50381.25873.73644.35551.0248
H51.89323.21391.02484.35555.1069
H63.21391.89324.35551.02485.1069

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 152.052 C1 N3 H5 111.592
C2 C1 N3 152.052 C2 N4 H6 111.592
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability