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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: BLYP/3-21G

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/3-21G
 hartrees
Energy at 0K-150.290695
Energy at 298.15K-150.298550
HF Energy-150.290695
Nuclear repulsion energy81.141792
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/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 A1 3231 3214 25.65      
2 A1 2995 2979 37.18      
3 A1 1685 1675 20.17      
4 A1 1486 1478 1.43      
5 A1 1035 1029 32.22      
6 A1 715 711 1.31      
7 A1 424 422 6.83      
8 A2 3326 3308 0.00      
9 A2 1387 1380 0.00      
10 A2 1072 1066 0.00      
11 A2 285 283 0.00      
12 B1 3328 3310 19.68      
13 B1 3040 3024 25.06      
14 B1 1343 1336 1.68      
15 B1 813 809 0.00      
16 B1 439 436 108.84      
17 B2 3229 3211 3.62      
18 B2 1670 1661 0.01      
19 B2 1367 1360 5.59      
20 B2 984 979 9.66      
21 B2 601 597 552.94      

Unscaled Zero Point Vibrational Energy (zpe) 17227.5 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 17132.7 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/3-21G
ABC
1.15742 0.28321 0.25859

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.558
N2 0.000 1.301 -0.185
N3 0.000 -1.301 -0.185
H4 0.892 0.000 1.203
H5 -0.892 0.000 1.203
H6 0.840 1.380 -0.790
H7 -0.840 1.380 -0.790
H8 -0.840 -1.380 -0.790
H9 0.840 -1.380 -0.790

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.49821.49821.10071.10072.10372.10372.10372.1037
N21.49822.60202.10132.10131.03821.03822.87352.8735
N31.49822.60202.10132.10132.87352.87351.03821.0382
H41.10072.10132.10131.78322.42462.97922.97922.4246
H51.10072.10132.10131.78322.97922.42462.42462.9792
H62.10371.03822.87352.42462.97921.68053.23062.7592
H72.10371.03822.87352.97922.42461.68052.75923.2306
H82.10372.87351.03822.97922.42463.23062.75921.6805
H92.10372.87351.03822.42462.97922.75923.23061.6805

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.769 C1 N2 H7 110.769
C1 N3 H8 110.769 C1 N3 H9 110.769
N2 C1 N3 120.536 N2 C1 H4 106.908
N2 C1 H5 106.908 N3 C1 H4 106.908
N3 C1 H5 106.908 H4 C1 H5 108.193
H6 N2 H7 108.062 H8 N3 H9 108.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.143      
2 N -0.596      
3 N -0.596      
4 H 0.200      
5 H 0.200      
6 H 0.234      
7 H 0.234      
8 H 0.234      
9 H 0.234      


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 -2.160 2.160
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.774 0.000 0.000
y 0.000 -25.628 0.000
z 0.000 0.000 -17.761
Traceless
 xyz
x 4.921 0.000 0.000
y 0.000 -8.361 0.000
z 0.000 0.000 3.440
Polar
3z2-r26.880
x2-y28.854
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.820 0.000 0.000
y 0.000 3.852 0.000
z 0.000 0.000 3.287


<r2> (average value of r2) Å2
<r2> 55.987
(<r2>)1/2 7.482