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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: QCISD/daug-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/daug-cc-pVDZ
 hartrees
Energy at 0K-188.807253
Energy at 298.15K 
HF Energy-188.122126
Nuclear repulsion energy116.511813
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/daug-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 3597 3597 1.67      
2 A 3500 3500 0.00      
3 A 3170 3170 0.07      
4 A 1765 1765 0.10      
5 A 1642 1642 19.51      
6 A 1333 1333 0.45      
7 A 1283 1283 0.10      
8 A 1040 1040 0.54      
9 A 937 937 65.19      
10 A 829 829 96.21      
11 A 546 546 1.14      
12 A 303 303 1.67      
13 A 242 242 14.42      
14 B 3597 3597 4.22      
15 B 3499 3499 1.95      
16 B 3171 3171 40.00      
17 B 1650 1650 43.37      
18 B 1392 1392 8.93      
19 B 1171 1171 90.90      
20 B 1130 1130 0.37      
21 B 823 823 189.15      
22 B 762 762 137.72      
23 B 329 329 24.84      
24 B 240 240 91.72      

Unscaled Zero Point Vibrational Energy (zpe) 18975.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18975.0 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/daug-cc-pVDZ
ABC
1.40119 0.13034 0.12117

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.319 0.595 0.031
C2 -0.319 -0.595 0.031
N3 -0.319 1.868 -0.111
N4 0.319 -1.868 -0.111
H5 1.415 0.639 0.033
H6 -1.415 -0.639 0.033
H7 -1.334 1.783 -0.060
H8 1.334 -1.783 -0.060
H9 -0.021 2.517 0.617
H10 0.021 -2.517 0.617

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.35061.43092.46701.09662.12852.03752.58692.03783.1807
C21.35062.46701.43092.12851.09662.58692.03753.18072.0378
N31.43092.46703.78982.12992.73991.01964.00781.01954.4577
N42.46701.43093.78982.73992.12994.00781.01964.45771.0195
H51.09662.12852.12992.73993.10522.97862.42522.43503.4993
H62.12851.09662.73992.12993.10522.42522.97863.49932.4350
H72.03752.58691.01964.00782.97862.42524.45321.64934.5587
H82.58692.03754.00781.01962.42522.97864.45324.55871.6493
H92.03783.18071.01954.45772.43503.49931.64934.55875.0340
H103.18072.03784.45771.01953.49932.43504.55871.64935.0340

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 124.961 C1 C2 H6 120.517
C1 N3 H7 111.399 C1 N3 H9 111.434
C2 C1 N3 124.961 C2 C1 H5 120.517
C2 N4 H8 111.399 C2 N4 H10 111.434
N3 C1 H5 114.209 N4 C2 H6 114.209
H7 N3 H9 107.964 H8 N4 H10 107.964
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability