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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: CCD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCD/TZVP
 hartrees
Energy at 0K-188.834436
Energy at 298.15K 
HF Energy-188.156768
Nuclear repulsion energy117.586143
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 CCD/TZVP
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 3655 3465 1.21      
2 A 3559 3374 0.84      
3 A 3197 3031 0.03      
4 A 1795 1701 0.51      
5 A 1666 1579 25.82      
6 A 1364 1293 0.25      
7 A 1306 1239 0.14      
8 A 1057 1002 2.66      
9 A 936 887 83.09      
10 A 868 823 120.74      
11 A 560 531 0.74      
12 A 309 293 2.66      
13 A 238 226 15.26      
14 B 3655 3465 2.87      
15 B 3558 3373 1.65      
16 B 3200 3033 43.19      
17 B 1674 1587 55.94      
18 B 1421 1348 6.23      
19 B 1190 1129 77.17      
20 B 1155 1095 0.18      
21 B 837 794 335.52      
22 B 770 730 53.54      
23 B 332 315 21.55      
24 B 239 227 99.85      

Unscaled Zero Point Vibrational Energy (zpe) 19270.1 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 18268.1 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 CCD/TZVP
ABC
1.43546 0.13266 0.12332

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.315 0.587 0.033
C2 -0.315 -0.587 0.033
N3 -0.315 1.851 -0.109
N4 0.315 -1.851 -0.109
H5 1.400 0.630 0.028
H6 -1.400 -0.630 0.028
H7 -1.322 1.776 -0.053
H8 1.322 -1.776 -0.053
H9 -0.002 2.506 0.595
H10 0.002 -2.506 0.595

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33271.41952.44251.08542.10282.02492.57022.02443.1593
C21.33272.44251.41952.10281.08542.57022.02493.15932.0244
N31.41952.44253.75572.10952.71151.01133.97991.01114.4251
N42.44251.41953.75572.71152.10953.97991.01134.42511.0111
H51.08542.10282.10952.71153.06972.95402.40882.40923.4797
H62.10281.08542.71152.10953.06972.40882.95403.47972.4092
H72.02492.57021.01133.97992.95402.40884.42791.64124.5285
H82.57022.02493.97991.01132.40882.95404.42794.52851.6412
H92.02443.15931.01114.42512.40923.47971.64124.52855.0119
H103.15932.02444.42511.01113.47972.40924.52851.64125.0119

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.086 C1 C2 H6 120.484
C1 N3 H7 111.722 C1 N3 H9 111.687
C2 C1 N3 125.086 C2 C1 H5 120.484
C2 N4 H8 111.722 C2 N4 H10 111.687
N3 C1 H5 114.070 N4 C2 H6 114.070
H7 N3 H9 108.493 H8 N4 H10 108.493
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability