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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-188.196040
Energy at 298.15K 
HF Energy-188.196040
Nuclear repulsion energy117.301730
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 mPW1PW91/3-21G*
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 3637 3454 2.23      
2 A 3523 3346 1.84      
3 A 3176 3016 0.14      
4 A 1765 1676 0.66      
5 A 1713 1626 14.65      
6 A 1365 1296 1.83      
7 A 1295 1230 0.01      
8 A 1030 978 0.44      
9 A 960 911 89.45      
10 A 586 557 215.69      
11 A 554 526 156.13      
12 A 354 336 6.81      
13 A 248 236 27.34      
14 B 3637 3453 5.74      
15 B 3521 3344 6.38      
16 B 3182 3021 50.37      
17 B 1715 1629 74.90      
18 B 1414 1342 2.80      
19 B 1197 1136 116.41      
20 B 1137 1079 5.92      
21 B 824 783 21.24      
22 B 502 477 337.30      
23 B 340 323 28.51      
24 B 191 182 241.93      

Unscaled Zero Point Vibrational Energy (zpe) 18932.2 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 17978.0 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 mPW1PW91/3-21G*
ABC
1.46214 0.13163 0.12227

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.312 0.593 0.042
C2 -0.312 -0.593 0.042
N3 -0.312 1.849 -0.090
N4 0.312 -1.849 -0.090
H5 1.399 0.631 0.051
H6 -1.399 -0.631 0.051
H7 -1.322 1.841 -0.187
H8 1.322 -1.841 -0.187
H9 0.034 2.590 0.510
H10 -0.034 -2.590 0.510

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34021.40922.44521.08732.10402.06942.64462.07043.2360
C21.34022.44521.40922.10401.08732.64462.06943.23602.0704
N31.40922.44523.75022.10552.71091.01464.03671.01494.4882
N42.44521.40923.75022.71092.10554.03671.01464.48821.0149
H51.08732.10402.10552.71093.06942.98782.48402.43173.5553
H62.10401.08732.71092.10553.06942.48402.98783.55532.4317
H72.06942.64461.01464.03672.98782.48404.53281.69974.6667
H82.64462.06944.03671.01462.48402.98784.53284.66671.6997
H92.07043.23601.01494.48822.43173.55531.69974.66675.1810
H103.23602.07044.48821.01493.55532.43174.66671.69975.1810

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.570 C1 C2 H6 119.796
C1 N3 H7 116.305 C1 N3 H9 116.382
C2 C1 N3 125.570 C2 C1 H5 119.796
C2 N4 H8 116.305 C2 N4 H10 116.382
N3 C1 H5 114.388 N4 C2 H6 114.388
H7 N3 H9 113.757 H8 N4 H10 113.757
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.033      
2 C -0.033      
3 N -0.770      
4 N -0.770      
5 H 0.202      
6 H 0.202      
7 H 0.301      
8 H 0.301      
9 H 0.300      
10 H 0.300      


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 2.003 2.003
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.894 -2.288 0.000
y -2.288 -19.985 0.000
z 0.000 0.000 -28.062
Traceless
 xyz
x 4.130 -2.288 0.000
y -2.288 3.993 0.000
z 0.000 0.000 -8.123
Polar
3z2-r2-16.245
x2-y20.091
xy-2.288
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.601 0.157 0.000
y 0.157 8.043 0.000
z 0.000 0.000 1.757


<r2> (average value of r2) Å2
<r2> 97.894
(<r2>)1/2 9.894