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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-188.144943
Energy at 298.15K 
HF Energy-188.144943
Nuclear repulsion energy117.464594
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 B1B95/3-21G
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 3639 3481 2.11      
2 A 3524 3372 1.64      
3 A 3182 3044 0.13      
4 A 1769 1692 0.90      
5 A 1709 1635 13.83      
6 A 1360 1301 1.78      
7 A 1291 1236 0.02      
8 A 1027 982 0.37      
9 A 959 918 85.75      
10 A 580 555 157.29      
11 A 544 521 219.38      
12 A 354 338 7.59      
13 A 244 234 28.21      
14 B 3638 3481 5.17      
15 B 3522 3370 6.55      
16 B 3187 3049 51.75      
17 B 1711 1637 75.95      
18 B 1409 1348 3.58      
19 B 1196 1144 122.38      
20 B 1131 1082 5.68      
21 B 824 789 21.01      
22 B 488 467 327.41      
23 B 335 320 26.71      
24 B 185 177 239.30      

Unscaled Zero Point Vibrational Energy (zpe) 18904.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 18086.0 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 B1B95/3-21G
ABC
1.46671 0.13203 0.12261

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.312 0.591 0.042
C2 -0.312 -0.591 0.042
N3 -0.312 1.846 -0.088
N4 0.312 -1.846 -0.088
H5 1.397 0.629 0.051
H6 -1.397 -0.629 0.051
H7 -1.321 1.840 -0.190
H8 1.321 -1.840 -0.190
H9 0.037 2.590 0.504
H10 -0.037 -2.590 0.504

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33771.40742.44081.08572.10062.06832.64202.06993.2339
C21.33772.44081.40742.10061.08572.64202.06833.23392.0699
N31.40742.44083.74422.10342.70571.01334.03231.01344.4840
N42.44081.40743.74422.70572.10344.03231.01334.48401.0134
H51.08572.10062.10342.70573.06472.98522.48132.42983.5529
H62.10061.08572.70572.10343.06472.48132.98523.55292.4298
H72.06832.64201.01334.03232.98522.48134.52901.69914.6640
H82.64202.06834.03231.01332.48132.98524.52904.66401.6991
H92.06993.23391.01344.48402.42983.55291.69914.66405.1809
H103.23392.06994.48401.01343.55292.42984.66401.69915.1809

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.509 C1 C2 H6 119.810
C1 N3 H7 116.448 C1 N3 H9 116.585
C2 C1 N3 125.509 C2 C1 H5 119.810
C2 N4 H8 116.448 C2 N4 H10 116.585
N3 C1 H5 114.440 N4 C2 H6 114.440
H7 N3 H9 113.931 H8 N4 H10 113.931
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.026      
2 C -0.026      
3 N -0.760      
4 N -0.760      
5 H 0.194      
6 H 0.194      
7 H 0.296      
8 H 0.296      
9 H 0.296      
10 H 0.296      


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 1.958 1.958
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.936 -2.259 0.000
y -2.259 -19.895 0.000
z 0.000 0.000 -27.992
Traceless
 xyz
x 4.008 -2.259 0.000
y -2.259 4.068 0.000
z 0.000 0.000 -8.076
Polar
3z2-r2-16.152
x2-y2-0.040
xy-2.259
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.618 0.154 0.000
y 0.154 8.037 0.000
z 0.000 0.000 1.748


<r2> (average value of r2) Å2
<r2> 97.646
(<r2>)1/2 9.882