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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-151.186659
Energy at 298.15K-151.194694
HF Energy-151.186659
Nuclear repulsion energy83.172526
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 B3PW91/6-311G*
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 3499 3368 5.43      
2 A1 3064 2950 46.19      
3 A1 1720 1656 62.79      
4 A1 1493 1437 1.24      
5 A1 1113 1071 39.49      
6 A1 876 843 2.50      
7 A1 460 443 4.44      
8 A2 3583 3450 0.00      
9 A2 1415 1362 0.00      
10 A2 1088 1048 0.00      
11 A2 269 259 0.00      
12 B1 3582 3449 1.79      
13 B1 3106 2991 33.12      
14 B1 1388 1336 0.69      
15 B1 853 821 0.38      
16 B1 417 401 103.15      
17 B2 3500 3369 0.27      
18 B2 1708 1645 2.38      
19 B2 1399 1347 21.05      
20 B2 1088 1048 78.40      
21 B2 795 766 484.37      

Unscaled Zero Point Vibrational Energy (zpe) 18208.0 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 17528.8 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 B3PW91/6-311G*
ABC
1.19318 0.30150 0.27377

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.547
N2 0.000 1.261 -0.183
N3 0.000 -1.261 -0.183
H4 0.876 0.000 1.202
H5 -0.876 0.000 1.202
H6 0.816 1.328 -0.782
H7 -0.816 1.328 -0.782
H8 -0.816 -1.328 -0.782
H9 0.816 -1.328 -0.782

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45741.45741.09381.09382.04892.04892.04892.0489
N21.45742.52292.06792.06791.01491.01492.78082.7808
N31.45742.52292.06792.06792.78082.78081.01491.0149
H41.09382.06792.06791.75262.38842.92662.92662.3884
H51.09382.06792.06791.75262.92662.38842.38842.9266
H62.04891.01492.78082.38842.92661.63223.11812.6568
H72.04891.01492.78082.92662.38841.63222.65683.1181
H82.04892.78081.01492.92662.38843.11812.65681.6322
H92.04892.78081.01492.38842.92662.65683.11811.6322

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.668 C1 N2 H7 110.668
C1 N3 H8 110.668 C1 N3 H9 110.668
N2 C1 N3 119.887 N2 C1 H4 107.442
N2 C1 H5 107.442 N3 C1 H4 107.442
N3 C1 H5 107.442 H4 C1 H5 106.483
H6 N2 H7 107.058 H8 N3 H9 107.058
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.203      
2 N -0.735      
3 N -0.735      
4 H 0.229      
5 H 0.229      
6 H 0.304      
7 H 0.304      
8 H 0.304      
9 H 0.304      


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 -2.068 2.068
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.597 0.000 0.000
y 0.000 -26.274 0.000
z 0.000 0.000 -18.156
Traceless
 xyz
x 5.618 0.000 0.000
y 0.000 -8.898 0.000
z 0.000 0.000 3.279
Polar
3z2-r26.558
x2-y29.677
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.088 0.000 0.000
y 0.000 4.342 0.000
z 0.000 0.000 3.973


<r2> (average value of r2) Å2
<r2> 53.842
(<r2>)1/2 7.338