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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: HF/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-188.113766
Energy at 298.15K 
HF Energy-188.113766
Nuclear repulsion energy118.483641
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 HF/6-31G(2df,p)
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 3836 3473 1.78 99.06 0.73 0.84
2 A 3743 3389 3.65 216.14 0.05 0.10
3 A 3299 2987 0.02 137.52 0.30 0.47
4 A 1927 1745 0.02 54.14 0.21 0.35
5 A 1781 1613 24.99 5.98 0.74 0.85
6 A 1448 1311 0.69 19.06 0.37 0.54
7 A 1380 1249 0.13 14.72 0.65 0.79
8 A 1113 1008 0.11 8.59 0.33 0.49
9 A 1064 963 53.45 0.81 0.36 0.53
10 A 903 817 145.05 3.08 0.47 0.64
11 A 592 536 1.04 7.35 0.29 0.46
12 A 338 306 1.23 3.54 0.58 0.73
13 A 264 239 15.61 1.24 0.75 0.86
14 B 3835 3473 7.42 32.47 0.75 0.86
15 B 3742 3388 2.89 49.43 0.75 0.86
16 B 3299 2988 53.16 0.05 0.75 0.86
17 B 1791 1621 54.90 4.62 0.75 0.86
18 B 1510 1367 8.33 0.62 0.75 0.86
19 B 1235 1118 101.06 0.34 0.75 0.86
20 B 1217 1102 0.19 0.91 0.75 0.86
21 B 952 862 107.33 14.76 0.75 0.86
22 B 832 754 306.46 0.13 0.75 0.86
23 B 356 322 25.48 0.25 0.75 0.86
24 B 255 231 112.01 0.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 20355.5 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 18431.9 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 HF/6-31G(2df,p)
ABC
1.48111 0.13394 0.12464

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.309 0.581 0.014
C2 -0.309 -0.581 0.014
N3 -0.309 1.845 -0.094
N4 0.309 -1.845 -0.094
H5 1.387 0.623 0.016
H6 -1.387 -0.623 0.016
H7 -1.305 1.784 -0.052
H8 1.305 -1.784 -0.052
H9 0.005 2.477 0.612
H10 -0.005 -2.477 0.612

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.31641.41102.42821.07862.08002.01412.56732.01093.1318
C21.31642.42821.41102.08001.07862.56732.01413.13182.0109
N31.41102.42823.74092.09332.69490.99813.97200.99864.3895
N42.42821.41103.74092.69492.09333.97200.99814.38950.9986
H51.07862.08002.09332.69493.04082.93232.40972.38773.4500
H62.08001.07862.69492.09333.04082.40972.93233.45002.3877
H72.01412.56730.99813.97202.93232.40974.42101.62374.5043
H82.56732.01413.97200.99812.40972.93234.42104.50431.6237
H92.01093.13180.99864.38952.38773.45001.62374.50434.9540
H103.13182.01094.38950.99863.45002.38774.50431.62374.9540

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.786 C1 C2 H6 120.234
C1 N3 H7 112.318 C1 N3 H9 111.996
C2 C1 N3 125.786 C2 C1 H5 120.234
C2 N4 H8 112.318 C2 N4 H10 111.996
N3 C1 H5 113.790 N4 C2 H6 113.790
H7 N3 H9 108.817 H8 N4 H10 108.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.037      
2 C -0.037      
3 N -0.631      
4 N -0.631      
5 H 0.126      
6 H 0.126      
7 H 0.271      
8 H 0.271      
9 H 0.271      
10 H 0.271      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 2.277 2.277
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.361 -1.444 0.000
y -1.444 -23.773 0.000
z 0.000 0.000 -27.459
Traceless
 xyz
x 5.255 -1.444 0.000
y -1.444 0.137 0.000
z 0.000 0.000 -5.392
Polar
3z2-r2-10.785
x2-y23.412
xy-1.444
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.053 0.302 0.000
y 0.302 7.780 0.000
z 0.000 0.000 3.109


<r2> (average value of r2) Å2
<r2> 96.632
(<r2>)1/2 9.830