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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-188.242984
Energy at 298.15K 
HF Energy-188.242984
Nuclear repulsion energy116.899090
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 B3LYP/3-21G
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 3564 3439 0.64      
2 A 3455 3334 0.78      
3 A 3148 3037 0.12      
4 A 1741 1680 0.29      
5 A 1705 1645 14.93      
6 A 1360 1312 1.75      
7 A 1284 1239 0.02      
8 A 1021 985 0.26      
9 A 951 918 76.99      
10 A 600 579 294.56      
11 A 557 538 29.10      
12 A 352 340 2.47      
13 A 249 241 25.61      
14 B 3563 3438 1.51      
15 B 3453 3332 0.72      
16 B 3154 3043 53.95      
17 B 1708 1648 58.57      
18 B 1410 1360 3.13      
19 B 1171 1130 94.48      
20 B 1137 1097 12.80      
21 B 812 783 19.65      
22 B 526 508 368.23      
23 B 342 330 34.16      
24 B 209 202 217.69      

Unscaled Zero Point Vibrational Energy (zpe) 18735.2 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 18077.6 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 B3LYP/3-21G
ABC
1.45313 0.13063 0.12140

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.594 0.042
C2 -0.313 -0.594 0.042
N3 -0.313 1.857 -0.094
N4 0.313 -1.857 -0.094
H5 1.400 0.633 0.052
H6 -1.400 -0.633 0.052
H7 -1.328 1.842 -0.171
H8 1.328 -1.842 -0.171
H9 0.029 2.592 0.524
H10 -0.029 -2.592 0.524

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34221.41682.45461.08802.10732.07312.64732.07513.2398
C21.34222.45461.41682.10731.08802.64732.07313.23982.0751
N31.41682.45463.76702.11072.72131.01834.04781.01884.5007
N42.45461.41683.76702.72132.11074.04781.01834.50071.0188
H51.08802.10732.11072.72133.07352.99262.48612.43723.5590
H62.10731.08802.72132.11073.07352.48612.99263.55902.4372
H72.07312.64731.01834.04782.99262.48614.54191.69934.6722
H82.64732.07314.04781.01832.48612.99264.54194.67221.6993
H92.07513.23981.01884.50072.43723.55901.69934.67225.1838
H103.23982.07514.50071.01883.55902.43724.67221.69935.1838

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.648 C1 C2 H6 119.888
C1 N3 H7 115.749 C1 N3 H9 115.895
C2 C1 N3 125.648 C2 C1 H5 119.888
C2 N4 H8 115.749 C2 N4 H10 115.895
N3 C1 H5 114.210 N4 C2 H6 114.210
H7 N3 H9 113.060 H8 N4 H10 113.060
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.011      
2 C -0.011      
3 N -0.717      
4 N -0.717      
5 H 0.171      
6 H 0.171      
7 H 0.279      
8 H 0.279      
9 H 0.278      
10 H 0.278      


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 2.061 2.061
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.205 -2.289 0.000
y -2.289 -20.482 0.000
z 0.000 0.000 -27.941
Traceless
 xyz
x 4.006 -2.289 0.000
y -2.289 3.591 0.000
z 0.000 0.000 -7.597
Polar
3z2-r2-15.194
x2-y20.277
xy-2.289
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.692 0.123 0.000
y 0.123 8.199 0.000
z 0.000 0.000 1.788


<r2> (average value of r2) Å2
<r2> 98.589
(<r2>)1/2 9.929