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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: BLYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-151.160666
Energy at 298.15K-151.168543
HF Energy-151.160666
Nuclear repulsion energy82.041184
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/6-31+G**
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 3383 3365 3.71      
2 A1 2986 2970 35.93      
3 A1 1626 1618 58.81      
4 A1 1448 1440 0.06      
5 A1 1034 1029 38.29      
6 A1 790 786 6.39      
7 A1 440 438 2.04      
8 A2 3476 3458 0.00      
9 A2 1356 1348 0.00      
10 A2 1038 1033 0.00      
11 A2 264 263 0.00      
12 B1 3475 3456 0.26      
13 B1 3031 3015 29.34      
14 B1 1323 1316 0.07      
15 B1 822 817 0.32      
16 B1 391 389 94.00      
17 B2 3383 3365 0.74      
18 B2 1615 1607 2.23      
19 B2 1353 1346 21.69      
20 B2 995 989 97.99      
21 B2 726 722 466.94      

Unscaled Zero Point Vibrational Energy (zpe) 17477.1 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 17384.5 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 BLYP/6-31+G**
ABC
1.17357 0.29117 0.26525

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.553
N2 0.000 1.282 -0.185
N3 0.000 -1.282 -0.185
H4 0.889 0.000 1.204
H5 -0.889 0.000 1.204
H6 0.828 1.368 -0.784
H7 -0.828 1.368 -0.784
H8 -0.828 -1.368 -0.784
H9 0.828 -1.368 -0.784

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.47861.47861.10181.10182.08402.08402.08402.0840
N21.47862.56332.08822.08821.02581.02582.83962.8396
N31.47862.56332.08822.08822.83962.83961.02581.0258
H41.10182.08822.08821.77722.41412.96142.96142.4141
H51.10182.08822.08821.77722.96142.41412.41412.9614
H62.08401.02582.83962.41412.96141.65553.19712.7352
H72.08401.02582.83962.96142.41411.65552.73523.1971
H82.08402.83961.02582.96142.41413.19712.73521.6555
H92.08402.83961.02582.41412.96142.73523.19711.6555

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.355 C1 N2 H7 111.355
C1 N3 H8 111.355 C1 N3 H9 111.355
N2 C1 N3 120.179 N2 C1 H4 107.146
N2 C1 H5 107.146 N3 C1 H4 107.146
N3 C1 H5 107.146 H4 C1 H5 107.512
H6 N2 H7 107.596 H8 N3 H9 107.596
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.213      
2 N -0.580      
3 N -0.580      
4 H 0.138      
5 H 0.138      
6 H 0.274      
7 H 0.274      
8 H 0.274      
9 H 0.274      


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 -1.931 1.931
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.313 0.000 0.000
y 0.000 -27.523 0.000
z 0.000 0.000 -19.252
Traceless
 xyz
x 6.074 0.000 0.000
y 0.000 -9.240 0.000
z 0.000 0.000 3.166
Polar
3z2-r26.332
x2-y210.210
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.538 0.000 0.000
y 0.000 6.243 0.000
z 0.000 0.000 4.963


<r2> (average value of r2) Å2
<r2> 55.811
(<r2>)1/2 7.471