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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: QCISD(T)=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD(T)=FULL/cc-pVTZ
 hartrees
Energy at 0K-189.044434
Energy at 298.15K 
HF Energy-188.163997
Nuclear repulsion energy117.783726
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(T)=FULL/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 A 3618 3462        
2 A 3528 3376        
3 A 3182 3045        
4 A 1766 1690        
5 A 1654 1582        
6 A 1339 1282        
7 A 1295 1239        
8 A 1042 997        
9 A 952 911        
10 A 836 800        
11 A 551 527        
12 A 314 300        
13 A 245 235        
14 B 3618 3462        
15 B 3526 3374        
16 B 3181 3044        
17 B 1661 1590        
18 B 1401 1341        
19 B 1186 1135        
20 B 1135 1086        
21 B 838 802        
22 B 769 735        
23 B 336 321        
24 B 243 232        

Unscaled Zero Point Vibrational Energy (zpe) 19106.9 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 18283.4 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 QCISD(T)=FULL/cc-pVTZ
ABC
1.44291 0.13295 0.12363

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.314 0.589 0.029
C2 -0.314 -0.589 0.029
N3 -0.314 1.850 -0.109
N4 0.314 -1.850 -0.109
H5 1.393 0.626 0.032
H6 -1.393 -0.626 0.032
H7 -1.319 1.767 -0.044
H8 1.319 -1.767 -0.044
H9 -0.003 2.497 0.601
H10 0.003 -2.497 0.601

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33521.41532.44271.07992.09572.01462.56222.01733.1544
C21.33522.44271.41532.09571.07992.56222.01463.15442.0173
N31.41532.44273.75242.10562.70431.01003.96861.01024.4161
N42.44271.41533.75242.70432.10563.96861.01004.41611.0102
H51.07992.09572.10562.70433.05512.94332.39512.40363.4658
H62.09571.07992.70432.10563.05512.39512.94333.46582.4036
H72.01462.56221.01003.96862.94332.39514.40941.63714.5108
H82.56222.01463.96861.01002.39512.94334.40944.51081.6371
H92.01733.15441.01024.41612.40363.46581.63714.51084.9948
H103.15442.01734.41611.01023.46582.40364.51081.63714.9948

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.242 C1 C2 H6 120.025
C1 N3 H7 111.236 C1 N3 H9 111.460
C2 C1 N3 125.242 C2 C1 H5 120.025
C2 N4 H8 111.236 C2 N4 H10 111.460
N3 C1 H5 114.428 N4 C2 H6 114.428
H7 N3 H9 108.267 H8 N4 H10 108.267
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability