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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: CCD/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 CCD/cc-pVDZ
 hartrees
Energy at 0K-188.754929
Energy at 298.15K 
HF Energy-188.105193
Nuclear repulsion energy116.723085
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/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 3611 3455 0.47      
2 A 3517 3365 0.86      
3 A 3184 3046 0.01      
4 A 1800 1723 0.02      
5 A 1654 1582 22.27      
6 A 1341 1283 0.79      
7 A 1307 1251 0.15      
8 A 1065 1019 2.48      
9 A 951 910 74.56      
10 A 900 861 71.04      
11 A 555 531 0.38      
12 A 311 297 0.28      
13 A 255 244 14.62      
14 B 3611 3455 0.61      
15 B 3516 3364 0.27      
16 B 3183 3046 45.07      
17 B 1663 1591 34.25      
18 B 1405 1344 11.07      
19 B 1202 1150 63.13      
20 B 1148 1098 0.34      
21 B 870 832 347.31      
22 B 786 752 43.71      
23 B 338 324 33.16      
24 B 255 244 84.50      

Unscaled Zero Point Vibrational Energy (zpe) 19213.2 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 18381.3 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/cc-pVDZ
ABC
1.40427 0.13084 0.12173

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.316 0.595 0.024
C2 -0.316 -0.595 0.024
N3 -0.316 1.867 -0.112
N4 0.316 -1.867 -0.112
H5 1.415 0.637 0.022
H6 -1.415 -0.637 0.022
H7 -1.329 1.765 -0.023
H8 1.329 -1.765 -0.023
H9 -0.020 2.488 0.644
H10 0.020 -2.488 0.644

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34761.42702.46591.09942.12442.01912.56842.01993.1585
C21.34762.46591.42702.12441.09942.56842.01913.15852.0199
N31.42702.46593.78732.12792.73751.02193.98811.02264.4327
N42.46591.42703.78732.73752.12793.98811.02194.43271.0226
H51.09942.12442.12792.73753.10282.96692.40342.42303.4778
H62.12441.09942.73752.12793.10282.40342.96693.47782.4230
H72.01912.56841.02193.98812.96692.40344.41841.63764.5107
H82.56842.01913.98811.02192.40342.96694.41844.51071.6376
H92.01993.15851.02264.43272.42303.47781.63764.51074.9755
H103.15852.01994.43271.02263.47782.42304.51071.63764.9755

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.403 C1 C2 H6 120.150
C1 N3 H7 109.968 C1 N3 H9 109.994
C2 C1 N3 125.403 C2 C1 H5 120.150
C2 N4 H8 109.968 C2 N4 H10 109.994
N3 C1 H5 114.133 N4 C2 H6 114.133
H7 N3 H9 106.447 H8 N4 H10 106.447
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability