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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: MP4/aug-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 MP4/aug-cc-pVDZ
 hartrees
Energy at 0K-186.360251
Energy at 298.15K 
HF Energy-185.696714
Nuclear repulsion energy87.802400
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 MP4/6-31G*
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 3379 3301        
2 Ag 1970 1924        
3 Ag 1195 1168        
4 Ag 904 883        
5 Ag 380 371        
6 Au 934 913        
7 Au 242 236        
8 Bg 729 712        
9 Bu 3380 3302        
10 Bu 1693 1654        
11 Bu 1126 1100        
12 Bu 288 281        

Unscaled Zero Point Vibrational Energy (zpe) 8109.9 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 7922.5 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-pVDZ
ABC
6.86764 0.13960 0.13682

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.184 -0.651 0.000
C2 -0.184 0.651 0.000
N3 -0.184 -1.869 0.000
N4 0.184 1.869 0.000
H5 0.633 -2.502 0.000
H6 -0.633 2.502 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.35341.27212.52051.90443.2573
C21.35342.52051.27213.25731.9044
N31.27212.52053.75651.03304.3942
N42.52051.27213.75654.39421.0330
H51.90443.25731.03304.39425.1615
H63.25731.90444.39421.03305.1615

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 147.471 C1 N3 H5 110.990
C2 C1 N3 147.471 C2 N4 H6 110.990
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability