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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: B3PW91/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-189.300401
Energy at 298.15K 
HF Energy-189.300401
Nuclear repulsion energy117.856334
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/cc-pVTZ
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 3617 3478 1.65      
2 A 3522 3387 0.90      
3 A 3139 3019 0.02      
4 A 1759 1692 0.34      
5 A 1638 1575 19.23      
6 A 1333 1282 0.60      
7 A 1284 1235 0.00      
8 A 1035 995 0.33      
9 A 934 898 69.41      
10 A 795 765 135.59      
11 A 554 532 1.53      
12 A 333 320 2.74      
13 A 246 236 15.72      
14 B 3616 3477 4.97      
15 B 3520 3385 1.43      
16 B 3144 3023 47.24      
17 B 1645 1582 48.91      
18 B 1390 1337 9.71      
19 B 1183 1137 110.86      
20 B 1124 1081 1.08      
21 B 819 787 75.27      
22 B 732 704 332.68      
23 B 347 334 37.22      
24 B 248 239 93.40      

Unscaled Zero Point Vibrational Energy (zpe) 18978.7 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 18249.9 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/cc-pVTZ
ABC
1.45556 0.13308 0.12369

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.311 0.590 0.035
C2 -0.311 -0.590 0.035
N3 -0.311 1.845 -0.109
N4 0.311 -1.845 -0.109
H5 1.397 0.632 0.037
H6 -1.397 -0.632 0.037
H7 -1.318 1.788 -0.046
H8 1.318 -1.788 -0.046
H9 0.024 2.525 0.560
H10 -0.024 -2.525 0.560

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33381.40822.43971.08692.10002.02372.58422.02543.1770
C21.33382.43971.40822.10001.08692.58422.02373.17702.0254
N31.40822.43973.74262.09982.70911.01073.98261.01104.4309
N42.43971.40823.74262.70912.09983.98261.01074.43091.0110
H51.08692.10002.09982.70913.06652.95192.42342.39593.5019
H62.10001.08692.70912.09983.06652.42342.95193.50192.3959
H72.02372.58421.01073.98262.95192.42344.44321.64664.5441
H82.58422.02373.98261.01072.42342.95194.44324.54411.6466
H92.02543.17701.01104.43092.39593.50191.64664.54415.0510
H103.17702.02544.43091.01103.50192.39594.54411.64665.0510

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.660 C1 C2 H6 120.003
C1 N3 H7 112.534 C1 N3 H9 112.667
C2 C1 N3 125.660 C2 C1 H5 120.003
C2 N4 H8 112.534 C2 N4 H10 112.667
N3 C1 H5 113.995 N4 C2 H6 113.995
H7 N3 H9 109.069 H8 N4 H10 109.069
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.095      
2 C -0.095      
3 N -0.256      
4 N -0.256      
5 H 0.093      
6 H 0.093      
7 H 0.127      
8 H 0.127      
9 H 0.132      
10 H 0.132      


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 2.008 2.008
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.668 -1.490 0.000
y -1.490 -22.401 0.000
z 0.000 0.000 -28.160
Traceless
 xyz
x 4.612 -1.490 0.000
y -1.490 2.013 0.000
z 0.000 0.000 -6.625
Polar
3z2-r2-13.250
x2-y21.732
xy-1.490
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.780 0.078 0.000
y 0.078 9.253 0.000
z 0.000 0.000 4.039


<r2> (average value of r2) Å2
<r2> 97.337
(<r2>)1/2 9.866