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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: CCSD=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCSD=FULL/cc-pVTZ
 hartrees
Energy at 0K-189.009847
Energy at 298.15K 
HF Energy-188.164605
Nuclear repulsion energy118.108697
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 CCSD=FULL/cc-pVTZ
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 3654 3464 1.95      
2 A 3565 3380 0.92      
3 A 3207 3040 0.01      
4 A 1807 1713 0.11      
5 A 1674 1587 21.64      
6 A 1361 1290 0.69      
7 A 1310 1242 0.10      
8 A 1056 1001 0.26      
9 A 977 926 67.87      
10 A 843 799 115.96      
11 A 559 530 1.14      
12 A 319 303 2.20      
13 A 248 235 13.80      
14 B 3653 3464 4.92      
15 B 3564 3379 2.87      
16 B 3206 3039 39.77      
17 B 1682 1595 45.27      
18 B 1420 1346 9.38      
19 B 1199 1137 87.17      
20 B 1150 1090 0.76      
21 B 869 824 112.91      
22 B 778 737 268.47      
23 B 339 321 29.20      
24 B 244 231 96.15      

Unscaled Zero Point Vibrational Energy (zpe) 19340.3 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 18336.6 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 CCSD=FULL/cc-pVTZ
ABC
1.45628 0.13359 0.12424

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.312 0.586 0.025
C2 -0.312 -0.586 0.025
N3 -0.312 1.846 -0.105
N4 0.312 -1.846 -0.105
H5 1.390 0.623 0.027
H6 -1.390 -0.623 0.027
H7 -1.315 1.769 -0.048
H8 1.315 -1.769 -0.048
H9 -0.001 2.490 0.605
H10 0.001 -2.490 0.605

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.32811.41202.43521.07792.08772.01342.56092.01453.1453
C21.32812.43521.41202.08771.07792.56092.01343.14532.0145
N31.41202.43523.74382.09972.69691.00723.96481.00764.4042
N42.43521.41203.74382.69692.09973.96481.00724.40421.0076
H51.07792.08772.09972.69693.04582.93842.39482.39823.4570
H62.08771.07792.69692.09973.04582.39482.93843.45702.3982
H72.01342.56091.00723.96482.93842.39484.40891.63454.5051
H82.56092.01343.96481.00722.39482.93844.40894.50511.6345
H92.01453.14531.00764.40422.39823.45701.63454.50514.9792
H103.14532.01454.40421.00763.45702.39824.50511.63454.9792

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.396 C1 C2 H6 120.028
C1 N3 H7 111.565 C1 N3 H9 111.646
C2 C1 N3 125.396 C2 C1 H5 120.028
C2 N4 H8 111.565 C2 N4 H10 111.646
N3 C1 H5 114.308 N4 C2 H6 114.308
H7 N3 H9 108.438 H8 N4 H10 108.438
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability