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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: CCSD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-188.700462
Energy at 298.15K 
HF Energy-188.079793
Nuclear repulsion energy117.074220
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/6-31G*
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 3593 3393 0.33      
2 A 3497 3303 0.76      
3 A 3182 3005 0.08      
4 A 1807 1706 0.05      
5 A 1705 1610 30.87      
6 A 1370 1294 0.79      
7 A 1317 1244 0.11      
8 A 1072 1012 4.46      
9 A 950 897 71.63      
10 A 895 845 123.36      
11 A 560 528 0.57      
12 A 313 296 0.02      
13 A 250 236 20.10      
14 B 3593 3393 0.68      
15 B 3496 3301 0.09      
16 B 3182 3005 44.98      
17 B 1715 1619 49.52      
18 B 1432 1352 6.22      
19 B 1206 1139 52.69      
20 B 1164 1099 0.20      
21 B 858 810 407.27      
22 B 777 734 52.22      
23 B 338 320 32.58      
24 B 247 233 103.32      

Unscaled Zero Point Vibrational Energy (zpe) 19258.6 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 18185.9 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 CCSD/6-31G*
ABC
1.41649 0.13165 0.12244

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.316 0.591 0.029
C2 -0.316 -0.591 0.029
N3 -0.316 1.859 -0.110
N4 0.316 -1.859 -0.110
H5 1.406 0.639 0.027
H6 -1.406 -0.639 0.027
H7 -1.330 1.770 -0.058
H8 1.330 -1.770 -0.058
H9 -0.023 2.501 0.626
H10 0.023 -2.501 0.626

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34031.42392.45411.09122.11642.02662.57102.02973.1627
C21.34032.45411.42392.11641.09122.57102.02663.16272.0297
N31.42392.45413.77182.11522.72921.01903.98551.01924.4349
N42.45411.42393.77182.72922.11523.98551.01904.43491.0192
H51.09122.11642.11522.72923.08932.96192.41192.42243.4832
H62.11641.09122.72922.11523.08932.41192.96193.48322.4224
H72.02662.57101.01903.98552.96192.41194.42801.64644.5322
H82.57102.02663.98551.01902.41192.96194.42804.53221.6464
H92.02973.16271.01924.43492.42243.48321.64644.53225.0024
H103.16272.02974.43491.01923.48322.42244.53221.64645.0024

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.174 C1 C2 H6 120.667
C1 N3 H7 111.031 C1 N3 H9 111.282
C2 C1 N3 125.174 C2 C1 H5 120.667
C2 N4 H8 111.031 C2 N4 H10 111.282
N3 C1 H5 113.833 N4 C2 H6 113.833
H7 N3 H9 107.757 H8 N4 H10 107.757
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability