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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/3-21G
 hartrees
Energy at 0K-188.242981
Energy at 298.15K 
HF Energy-188.242981
Nuclear repulsion energy116.900415
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 B3LYPultrafine/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 3565 3439 0.64      
2 A 3456 3335 0.78      
3 A 3147 3037 0.12      
4 A 1741 1680 0.31      
5 A 1705 1645 14.84      
6 A 1360 1313 1.75      
7 A 1284 1239 0.01      
8 A 1021 985 0.31      
9 A 950 917 76.97      
10 A 599 578 294.36      
11 A 558 538 30.50      
12 A 351 339 2.75      
13 A 249 240 25.26      
14 B 3564 3439 1.52      
15 B 3454 3332 0.75      
16 B 3153 3043 53.99      
17 B 1708 1648 58.74      
18 B 1410 1361 3.12      
19 B 1171 1130 95.15      
20 B 1137 1097 12.71      
21 B 811 782 19.62      
22 B 525 507 365.59      
23 B 342 330 33.52      
24 B 207 200 219.57      

Unscaled Zero Point Vibrational Energy (zpe) 18733.0 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 18075.5 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 B3LYPultrafine/3-21G
ABC
1.45341 0.13063 0.12140

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.594 0.042
C2 -0.313 -0.594 0.042
N3 -0.313 1.857 -0.094
N4 0.313 -1.857 -0.094
H5 1.400 0.633 0.052
H6 -1.400 -0.633 0.052
H7 -1.328 1.842 -0.171
H8 1.328 -1.842 -0.171
H9 0.030 2.592 0.523
H10 -0.030 -2.592 0.523

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34221.41672.45461.08802.10722.07332.64772.07523.2402
C21.34222.45461.41672.10721.08802.64772.07333.24022.0752
N31.41672.45463.76692.11062.72121.01834.04811.01884.5010
N42.45461.41673.76692.72122.11064.04811.01834.50101.0188
H51.08802.10722.11062.72123.07342.99272.48652.43713.5595
H62.10721.08802.72122.11063.07342.48652.99273.55952.4371
H72.07332.64771.01834.04812.99272.48654.54241.69944.6728
H82.64772.07334.04811.01832.48652.99274.54244.67281.6994
H92.07523.24021.01884.50102.43713.55951.69944.67285.1850
H103.24022.07524.50101.01883.55952.43714.67281.69945.1850

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.654 C1 C2 H6 119.880
C1 N3 H7 115.773 C1 N3 H9 115.917
C2 C1 N3 125.654 C2 C1 H5 119.880
C2 N4 H8 115.773 C2 N4 H10 115.917
N3 C1 H5 114.210 N4 C2 H6 114.210
H7 N3 H9 113.073 H8 N4 H10 113.073
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.011      
2 C -0.011      
3 N -0.717      
4 N -0.717      
5 H 0.171      
6 H 0.171      
7 H 0.279      
8 H 0.279      
9 H 0.278      
10 H 0.278      


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 2.057 2.057
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.205 -2.288 0.000
y -2.288 -20.462 0.000
z 0.000 0.000 -27.945
Traceless
 xyz
x 3.998 -2.288 0.000
y -2.288 3.613 0.000
z 0.000 0.000 -7.612
Polar
3z2-r2-15.223
x2-y20.257
xy-2.288
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.691 0.123 0.000
y 0.123 8.200 0.000
z 0.000 0.000 1.786


<r2> (average value of r2) Å2
<r2> 98.589
(<r2>)1/2 9.929