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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-151.159457
Energy at 298.15K-151.167503
HF Energy-151.159457
Nuclear repulsion energy83.453713
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 B1B95/6-311G*
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 3523 3377 4.91      
2 A1 3087 2959 46.63      
3 A1 1727 1655 63.73      
4 A1 1499 1437 1.02      
5 A1 1122 1076 38.92      
6 A1 887 850 2.29      
7 A1 459 440 4.77      
8 A2 3609 3460 0.00      
9 A2 1420 1361 0.00      
10 A2 1090 1045 0.00      
11 A2 269 258 0.00      
12 B1 3608 3458 1.54      
13 B1 3130 3000 33.55      
14 B1 1393 1335 0.71      
15 B1 854 819 0.53      
16 B1 417 400 103.57      
17 B2 3525 3379 0.15      
18 B2 1716 1645 2.54      
19 B2 1403 1345 23.19      
20 B2 1105 1060 83.82      
21 B2 802 769 474.29      

Unscaled Zero Point Vibrational Energy (zpe) 18321.4 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 17562.9 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 B1B95/6-311G*
ABC
1.19680 0.30423 0.27599

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.547
N2 0.000 1.256 -0.183
N3 0.000 -1.256 -0.183
H4 0.874 0.000 1.200
H5 -0.874 0.000 1.200
H6 0.814 1.319 -0.781
H7 -0.814 1.319 -0.781
H8 -0.814 -1.319 -0.781
H9 0.814 -1.319 -0.781

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45261.45261.09081.09082.04152.04152.04152.0415
N21.45262.51212.06222.06221.01221.01222.76652.7665
N31.45262.51212.06222.06222.76652.76651.01221.0122
H41.09082.06222.06221.74762.38122.91792.91792.3812
H51.09082.06222.06221.74762.91792.38122.38122.9179
H62.04151.01222.76652.38122.91791.62743.10032.6388
H72.04151.01222.76652.91792.38121.62742.63883.1003
H82.04152.76651.01222.91792.38123.10032.63881.6274
H92.04152.76651.01222.38122.91792.63883.10031.6274

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.565 C1 N2 H7 110.565
C1 N3 H8 110.565 C1 N3 H9 110.565
N2 C1 N3 119.694 N2 C1 H4 107.497
N2 C1 H5 107.497 N3 C1 H4 107.497
N3 C1 H5 107.497 H4 C1 H5 106.466
H6 N2 H7 106.997 H8 N3 H9 106.997
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.211      
2 N -0.730      
3 N -0.730      
4 H 0.230      
5 H 0.230      
6 H 0.303      
7 H 0.303      
8 H 0.303      
9 H 0.303      


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 -2.049 2.049
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.619 0.000 0.000
y 0.000 -26.235 0.000
z 0.000 0.000 -18.141
Traceless
 xyz
x 5.569 0.000 0.000
y 0.000 -8.855 0.000
z 0.000 0.000 3.286
Polar
3z2-r26.572
x2-y29.616
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.073 0.000 0.000
y 0.000 4.279 0.000
z 0.000 0.000 3.959


<r2> (average value of r2) Å2
<r2> 53.510
(<r2>)1/2 7.315