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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: mPW1PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-31G
 hartrees
Energy at 0K-189.188381
Energy at 298.15K 
HF Energy-189.188381
Nuclear repulsion energy117.572438
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 mPW1PW91/6-31G
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 3781 3579 4.51      
2 A 3654 3459 0.89      
3 A 3195 3024 0.24      
4 A 1800 1704 2.41      
5 A 1712 1620 8.24      
6 A 1373 1299 1.44      
7 A 1307 1237 1.51      
8 A 1029 974 0.95      
9 A 952 901 80.53      
10 A 578 547 28.85      
11 A 458 433 492.69      
12 A 350 331 47.93      
13 A 232 220 30.33      
14 B 3781 3579 13.44      
15 B 3652 3457 20.28      
16 B 3198 3028 65.50      
17 B 1715 1623 114.44      
18 B 1419 1343 9.11      
19 B 1238 1172 187.31      
20 B 1119 1059 5.81      
21 B 827 783 23.93      
22 B 407 386 208.77      
23 B 329 311 5.05      
24 B 168 159 210.06      

Unscaled Zero Point Vibrational Energy (zpe) 19134.8 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 18113.0 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 mPW1PW91/6-31G
ABC
1.47835 0.13211 0.12253

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.315 0.594 0.050
C2 -0.315 -0.594 0.050
N3 -0.315 1.840 -0.075
N4 0.315 -1.840 -0.075
H5 1.401 0.638 0.062
H6 -1.401 -0.638 0.062
H7 -1.303 1.869 -0.255
H8 1.303 -1.869 -0.255
H9 0.064 2.627 0.421
H10 -0.064 -2.627 0.421

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34421.40142.43711.08732.11202.08212.67162.08183.2642
C21.34422.43711.40142.11201.08732.67162.08213.26422.0818
N31.40142.43713.73332.09912.70911.00484.05071.00444.5013
N42.43711.40143.73332.70912.09914.05071.00484.50131.0044
H51.08732.11202.09912.70913.07862.98772.52932.42323.5964
H62.11201.08732.70912.09913.07862.52932.98773.59642.4232
H72.08212.67161.00484.05072.98772.52934.55721.70244.7126
H82.67162.08214.05071.00482.52932.98774.55724.71261.7024
H92.08183.26421.00444.50132.42323.59641.70244.71265.2553
H103.26422.08184.50131.00443.59642.42324.71261.70245.2553

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.142 C1 C2 H6 120.230
C1 N3 H7 118.915 C1 N3 H9 118.913
C2 C1 N3 125.142 C2 C1 H5 120.230
C2 N4 H8 118.915 C2 N4 H10 118.913
N3 C1 H5 114.424 N4 C2 H6 114.424
H7 N3 H9 115.844 H8 N4 H10 115.844
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.026      
2 C 0.026      
3 N -0.807      
4 N -0.807      
5 H 0.143      
6 H 0.143      
7 H 0.320      
8 H 0.320      
9 H 0.318      
10 H 0.318      


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 1.437 1.437
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.109 -1.971 0.000
y -1.971 -18.900 0.000
z 0.000 0.000 -28.456
Traceless
 xyz
x 3.569 -1.971 0.000
y -1.971 5.383 0.000
z 0.000 0.000 -8.952
Polar
3z2-r2-17.903
x2-y2-1.209
xy-1.971
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.782 0.206 0.000
y 0.206 8.320 0.000
z 0.000 0.000 2.102


<r2> (average value of r2) Å2
<r2> 97.781
(<r2>)1/2 9.888