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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-188.175676
Energy at 298.15K 
HF Energy-188.175676
Nuclear repulsion energy117.097662
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 B3PW91/3-21G
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 3611 3471 1.65      
2 A 3497 3362 1.41      
3 A 3156 3034 0.14      
4 A 1750 1682 0.56      
5 A 1703 1637 14.63      
6 A 1357 1304 1.82      
7 A 1288 1238 0.00      
8 A 1023 983 0.49      
9 A 951 914 87.86      
10 A 583 560 226.04      
11 A 552 530 137.38      
12 A 353 340 6.40      
13 A 245 236 26.94      
14 B 3610 3470 4.15      
15 B 3495 3359 4.42      
16 B 3162 3039 52.60      
17 B 1706 1640 71.51      
18 B 1406 1352 2.78      
19 B 1188 1142 113.03      
20 B 1131 1087 6.10      
21 B 813 782 20.55      
22 B 500 481 340.09      
23 B 339 326 30.02      
24 B 195 187 236.44      

Unscaled Zero Point Vibrational Energy (zpe) 18806.6 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 18076.9 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 B3PW91/3-21G
ABC
1.45793 0.13115 0.12181

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.594 0.043
C2 -0.313 -0.594 0.043
N3 -0.313 1.852 -0.091
N4 0.313 -1.852 -0.091
H5 1.401 0.633 0.052
H6 -1.401 -0.633 0.052
H7 -1.325 1.843 -0.180
H8 1.325 -1.843 -0.180
H9 0.038 2.595 0.508
H10 -0.038 -2.595 0.508

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34301.41142.45021.08892.10782.07192.64892.07293.2423
C21.34302.45021.41142.10781.08892.64892.07193.24232.0729
N31.41142.45023.75722.10802.71691.01654.04351.01684.4963
N42.45021.41143.75722.71692.10804.04351.01654.49631.0168
H51.08892.10782.10802.71693.07452.99172.48832.43263.5637
H62.10781.08892.71692.10803.07452.48832.99173.56372.4326
H72.07192.64891.01654.04352.99172.48834.54071.70194.6726
H82.64892.07194.04351.01652.48832.99174.54074.67261.7019
H92.07293.24231.01684.49632.43263.56371.70194.67265.1911
H103.24232.07294.49631.01683.56372.43264.67261.70195.1911

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.628 C1 C2 H6 119.795
C1 N3 H7 116.219 C1 N3 H9 116.282
C2 C1 N3 125.628 C2 C1 H5 119.795
C2 N4 H8 116.219 C2 N4 H10 116.282
N3 C1 H5 114.321 N4 C2 H6 114.321
H7 N3 H9 113.650 H8 N4 H10 113.650
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.034      
2 C -0.034      
3 N -0.757      
4 N -0.757      
5 H 0.196      
6 H 0.196      
7 H 0.298      
8 H 0.298      
9 H 0.297      
10 H 0.297      


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 2.010 2.010
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.910 -2.294 0.000
y -2.294 -19.881 0.000
z 0.000 0.000 -28.071
Traceless
 xyz
x 4.066 -2.294 0.000
y -2.294 4.109 0.000
z 0.000 0.000 -8.176
Polar
3z2-r2-16.351
x2-y2-0.029
xy-2.294
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.649 0.139 0.000
y 0.139 8.147 0.000
z 0.000 0.000 1.764


<r2> (average value of r2) Å2
<r2> 98.180
(<r2>)1/2 9.909