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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

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

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-pVDZ
 hartrees
Energy at 0K-188.789856
Energy at 298.15K 
HF Energy-188.104161
Nuclear repulsion energy116.455210
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-pVDZ
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 3572 3425        
2 A 3476 3333        
3 A 3160 3031        
4 A 1758 1686        
5 A 1636 1569        
6 A 1321 1267        
7 A 1293 1240        
8 A 1052 1009        
9 A 929 891        
10 A 893 856        
11 A 546 524        
12 A 306 293        
13 A 253 243        
14 B 3571 3425        
15 B 3474 3332        
16 B 3160 3031        
17 B 1646 1578        
18 B 1389 1332        
19 B 1188 1139        
20 B 1135 1088        
21 B 855 820        
22 B 757 726        
23 B 336 322        
24 B 251 241        

Unscaled Zero Point Vibrational Energy (zpe) 18977.5 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 18199.4 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-pVDZ
ABC
1.39312 0.13030 0.12122

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.318 0.598 0.029
C2 -0.318 -0.598 0.029
N3 -0.318 1.870 -0.117
N4 0.318 -1.870 -0.117
H5 1.417 0.640 0.028
H6 -1.417 -0.640 0.028
H7 -1.331 1.761 -0.021
H8 1.331 -1.761 -0.021
H9 -0.023 2.494 0.640
H10 0.023 -2.494 0.640

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.35491.42942.47331.10062.13172.01842.56882.02073.1661
C21.35492.47331.42942.13171.10062.56882.01843.16612.0207
N31.42942.47333.79452.13182.74491.02423.98981.02464.4430
N42.47331.42943.79452.74492.13183.98981.02424.44301.0246
H51.10062.13172.13182.74493.11052.96902.40362.42643.4847
H62.13171.10062.74492.13183.11052.40362.96903.48472.4264
H72.01842.56881.02423.98982.96902.40364.41581.63904.5146
H82.56882.01843.98981.02422.40362.96904.41584.51461.6390
H92.02073.16611.02464.44302.42643.48471.63904.51464.9884
H103.16612.02074.44301.02463.48472.42644.51461.63904.9884

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.298 C1 C2 H6 120.130
C1 N3 H7 109.596 C1 N3 H9 109.761
C2 C1 N3 125.298 C2 C1 H5 120.130
C2 N4 H8 109.596 C2 N4 H10 109.761
N3 C1 H5 114.211 N4 C2 H6 114.211
H7 N3 H9 106.262 H8 N4 H10 106.262
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability