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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: BLYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G
 hartrees
Energy at 0K-151.086555
Energy at 298.15K-151.094257
HF Energy-151.086555
Nuclear repulsion energy81.718762
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 BLYP/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 A1 3392 3366 8.97      
2 A1 2995 2972 49.65      
3 A1 1667 1654 34.59      
4 A1 1472 1461 0.96      
5 A1 1020 1012 56.57      
6 A1 658 653 53.51      
7 A1 437 434 0.00      
8 A2 3509 3483 0.00      
9 A2 1371 1360 0.00      
10 A2 1039 1031 0.00      
11 A2 258 256 0.00      
12 B1 3510 3484 3.27      
13 B1 3045 3022 34.57      
14 B1 1324 1314 0.03      
15 B1 819 813 0.55      
16 B1 415 412 96.14      
17 B2 3392 3366 0.77      
18 B2 1656 1643 4.32      
19 B2 1380 1370 8.78      
20 B2 1000 993 92.62      
21 B2 500 496 603.49      

Unscaled Zero Point Vibrational Energy (zpe) 17429.2 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 17296.7 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 BLYP/6-31G
ABC
1.18155 0.28605 0.26238

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.548
N2 0.000 1.281 -0.194
N3 0.000 -1.281 -0.194
H4 0.889 0.000 1.200
H5 -0.889 0.000 1.200
H6 0.846 1.454 -0.745
H7 -0.846 1.454 -0.745
H8 -0.846 -1.454 -0.745
H9 0.846 -1.454 -0.745

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.48011.48011.10211.10212.12192.12192.12192.1219
N21.48012.56132.09102.09101.02441.02442.91512.9151
N31.48012.56132.09102.09102.91512.91511.02441.0244
H41.10212.09102.09101.77732.42902.98432.98432.4290
H51.10212.09102.09101.77732.98432.42902.42902.9843
H62.12191.02442.91512.42902.98431.69153.36422.9081
H72.12191.02442.91512.98432.42901.69152.90813.3642
H82.12192.91511.02442.98432.42903.36422.90811.6915
H92.12192.91511.02442.42902.98432.90813.36421.6915

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 114.601 C1 N2 H7 114.601
C1 N3 H8 114.601 C1 N3 H9 114.601
N2 C1 N3 119.828 N2 C1 H4 107.247
N2 C1 H5 107.247 N3 C1 H4 107.247
N3 C1 H5 107.247 H4 C1 H5 107.482
H6 N2 H7 111.294 H8 N3 H9 111.294
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.040      
2 N -0.616      
3 N -0.616      
4 H 0.139      
5 H 0.139      
6 H 0.248      
7 H 0.248      
8 H 0.248      
9 H 0.248      


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 -2.121 2.121
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.584 0.000 0.000
y 0.000 -24.915 0.000
z 0.000 0.000 -18.468
Traceless
 xyz
x 5.107 0.000 0.000
y 0.000 -7.388 0.000
z 0.000 0.000 2.281
Polar
3z2-r24.562
x2-y28.330
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.004 0.000 0.000
y 0.000 4.283 0.000
z 0.000 0.000 3.405


<r2> (average value of r2) Å2
<r2> 55.774
(<r2>)1/2 7.468