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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: CCD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-188.766510
Energy at 298.15K 
HF Energy-188.108335
Nuclear repulsion energy117.304557
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/6-31+G**
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 3702 3489 2.11      
2 A 3597 3390 0.73      
3 A 3234 3048 0.07      
4 A 1807 1703 0.24      
5 A 1696 1598 28.42      
6 A 1369 1290 0.46      
7 A 1309 1233 0.02      
8 A 1060 999 0.73      
9 A 942 888 82.69      
10 A 846 797 148.16      
11 A 558 526 1.44      
12 A 306 288 2.66      
13 A 239 225 18.05      
14 B 3702 3488 6.94      
15 B 3596 3389 3.20      
16 B 3235 3049 44.38      
17 B 1705 1607 66.03      
18 B 1426 1344 7.50      
19 B 1199 1130 94.14      
20 B 1154 1087 0.32      
21 B 826 778 263.63      
22 B 764 720 111.66      
23 B 331 312 22.10      
24 B 234 220 108.54      

Unscaled Zero Point Vibrational Energy (zpe) 19418.2 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 18297.8 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 CCD/6-31+G**
ABC
1.42732 0.13200 0.12269

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.317 0.590 0.033
C2 -0.317 -0.590 0.033
N3 -0.317 1.855 -0.107
N4 0.317 -1.855 -0.107
H5 1.401 0.636 0.031
H6 -1.401 -0.636 0.031
H7 -1.326 1.783 -0.077
H8 1.326 -1.783 -0.077
H9 -0.014 2.515 0.597
H10 0.014 -2.515 0.597

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33971.42192.44871.08482.11102.03352.58072.03333.1707
C21.33972.44871.42192.11101.08482.58072.03353.17072.0333
N31.42192.44873.76332.11082.72011.01193.99161.01184.4388
N42.44871.42193.76332.72012.11083.99161.01194.43881.0118
H51.08482.11102.11082.72013.07752.96022.42272.41933.4898
H62.11101.08482.72012.11083.07752.42272.96023.48982.4193
H72.03352.58071.01193.99162.96022.42274.44381.64674.5523
H82.58072.03353.99161.01192.42272.96024.44384.55231.6467
H92.03333.17071.01184.43882.41933.48981.64674.55235.0310
H103.17072.03334.43881.01183.48982.41934.55231.64675.0310

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 124.903 C1 C2 H6 120.712
C1 N3 H7 112.250 C1 N3 H9 112.234
C2 C1 N3 124.903 C2 C1 H5 120.712
C2 N4 H8 112.250 C2 N4 H10 112.234
N3 C1 H5 114.048 N4 C2 H6 114.048
H7 N3 H9 108.923 H8 N4 H10 108.923
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability