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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-151.075443
Energy at 298.15K 
HF Energy-151.075443
Nuclear repulsion energy83.013589
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 B1B95/6-31G
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 3594 3427 0.12      
2 A1 3102 2959 50.58      
3 A1 1719 1640 49.42      
4 A1 1519 1449 2.85      
5 A1 1087 1037 66.69      
6 A1 667 637 127.41      
7 A1 453 432 8.36      
8 A2 3721 3549 0.00      
9 A2 1416 1350 0.00      
10 A2 1060 1011 0.00      
11 A2 242 231 0.00      
12 B1 3721 3549 2.18      
13 B1 3157 3011 33.11      
14 B1 1360 1297 1.26      
15 B1 840 801 2.10      
16 B1 415 396 90.91      
17 B2 3595 3429 0.12      
18 B2 1709 1630 16.39      
19 B2 1424 1358 7.52      
20 B2 1112 1061 133.25      
21 B2 450 429 608.24      

Unscaled Zero Point Vibrational Energy (zpe) 18182.3 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 17340.5 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 B1B95/6-31G
See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.537
N2 0.000 1.252 -0.198
N3 0.000 -1.252 -0.198
H4 0.876 0.000 1.189
H5 -0.876 0.000 1.189
H6 0.842 1.472 -0.708
H7 -0.842 1.472 -0.708
H8 -0.842 -1.472 -0.708
H9 0.842 -1.472 -0.708

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45191.45191.09191.09192.10412.10412.10412.1041
N21.45192.50362.06372.06371.00841.00842.89652.8965
N31.45192.50362.06372.06372.89652.89651.00841.0084
H41.09192.06372.06371.75172.40192.95252.95252.4019
H51.09192.06372.06371.75172.95252.40192.40192.9525
H62.10411.00842.89652.40192.95251.68323.39202.9449
H72.10411.00842.89652.95252.40191.68322.94493.3920
H82.10412.89651.00842.95252.40193.39202.94491.6832
H92.10412.89651.00842.40192.95252.94493.39201.6832

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 116.407 C1 N2 H7 116.407
C1 N3 H8 116.407 C1 N3 H9 116.407
N2 C1 N3 119.133 N2 C1 H4 107.605
N2 C1 H5 107.605 N3 C1 H4 107.605
N3 C1 H5 107.605 H4 C1 H5 106.674
H6 N2 H7 113.138 H8 N3 H9 113.138
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.062      
2 N -0.722      
3 N -0.722      
4 H 0.175      
5 H 0.175      
6 H 0.289      
7 H 0.289      
8 H 0.289      
9 H 0.289      


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 -2.020 2.020
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.075 0.000 0.000
y 0.000 -23.942 0.000
z 0.000 0.000 -18.495
Traceless
 xyz
x 5.143 0.000 0.000
y 0.000 -6.657 0.000
z 0.000 0.000 1.514
Polar
3z2-r23.027
x2-y27.866
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.740 0.000 0.000
y 0.000 3.820 0.000
z 0.000 0.000 3.126


<r2> (average value of r2) Å2
<r2> 54.276
(<r2>)1/2 7.367