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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: QCISD/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-188.955685
Energy at 298.15K 
HF Energy-188.171660
Nuclear repulsion energy117.645949
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/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3640 3640 2.15      
2 A 3548 3548 0.78      
3 A 3181 3181 0.04      
4 A 1782 1782 0.18      
5 A 1665 1665 21.72      
6 A 1353 1353 0.58      
7 A 1300 1300 0.07      
8 A 1051 1051 0.91      
9 A 953 953 68.78      
10 A 840 840 111.01      
11 A 554 554 1.02      
12 A 315 315 2.16      
13 A 242 242 14.76      
14 B 3639 3639 5.63      
15 B 3547 3547 3.42      
16 B 3183 3183 38.28      
17 B 1672 1672 42.74      
18 B 1411 1411 9.03      
19 B 1185 1185 87.03      
20 B 1144 1144 0.29      
21 B 836 836 183.54      
22 B 769 769 193.43      
23 B 335 335 28.60      
24 B 244 244 94.36      

Unscaled Zero Point Vibrational Energy (zpe) 19193.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19193.9 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/Def2TZVPP
ABC
1.43913 0.13267 0.12334

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/Def2TZVPP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.315 0.588 0.028
C2 -0.315 -0.588 0.028
N3 -0.315 1.852 -0.107
N4 0.315 -1.852 -0.107
H5 1.398 0.628 0.028
H6 -1.398 -0.628 0.028
H7 -1.320 1.774 -0.047
H8 1.320 -1.774 -0.047
H9 -0.004 2.500 0.601
H10 0.004 -2.500 0.601

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33441.41812.44371.08402.10082.02052.56792.02123.1565
C21.33442.44371.41812.10081.08402.56792.02053.15652.0212
N31.41812.44373.75652.10952.70941.00973.97721.00954.4207
N42.44371.41813.75652.70942.10953.97721.00974.42071.0095
H51.08402.10082.10952.70943.06532.95032.40412.40813.4723
H62.10081.08402.70942.10953.06532.40412.95033.47232.4081
H72.02052.56791.00973.97722.95032.40414.42151.63674.5209
H82.56792.02053.97721.00972.40412.95034.42154.52091.6367
H92.02123.15651.00954.42072.40813.47231.63674.52095.0005
H103.15652.02124.42071.00953.47232.40814.52091.63675.0005

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.171 C1 C2 H6 120.254
C1 N3 H7 111.547 C1 N3 H9 111.623
C2 C1 N3 125.171 C2 C1 H5 120.254
C2 N4 H8 111.547 C2 N4 H10 111.623
N3 C1 H5 114.270 N4 C2 H6 114.270
H7 N3 H9 108.298 H8 N4 H10 108.298
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability