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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-151.175190
Energy at 298.15K-151.183152
HF Energy-151.175190
Nuclear repulsion energy82.160564
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/6-311G*
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 3351 3342 15.91      
2 A1 2977 2969 45.79      
3 A1 1675 1671 51.87      
4 A1 1457 1453 0.48      
5 A1 1075 1072 31.07      
6 A1 829 827 0.16      
7 A1 441 440 5.16      
8 A2 3429 3421 0.00      
9 A2 1376 1373 0.00      
10 A2 1066 1063 0.00      
11 A2 269 268 0.00      
12 B1 3429 3420 10.16      
13 B1 3013 3005 35.20      
14 B1 1351 1348 1.38      
15 B1 833 831 0.51      
16 B1 414 413 94.12      
17 B2 3351 3342 0.68      
18 B2 1663 1659 0.24      
19 B2 1362 1359 17.96      
20 B2 1002 1000 35.69      
21 B2 780 778 512.59      

Unscaled Zero Point Vibrational Energy (zpe) 17570.3 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 17526.3 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/6-311G*
ABC
1.17383 0.29257 0.26595

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.553
N2 0.000 1.283 -0.183
N3 0.000 -1.283 -0.183
H4 0.884 0.000 1.207
H5 -0.884 0.000 1.207
H6 0.822 1.339 -0.793
H7 -0.822 1.339 -0.793
H8 -0.822 -1.339 -0.793
H9 0.822 -1.339 -0.793

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.47881.47881.09981.09982.06882.06882.06882.0688
N21.47882.56592.08772.08771.02541.02542.81462.8146
N31.47882.56592.08772.08772.81462.81461.02541.0254
H41.09982.08772.08771.76812.40792.95032.95032.4079
H51.09982.08772.08771.76812.95032.40792.40792.9503
H62.06881.02542.81462.40792.95031.64353.14182.6776
H72.06881.02542.81462.95032.40791.64352.67763.1418
H82.06882.81461.02542.95032.40793.14182.67761.6435
H92.06882.81461.02542.40792.95032.67763.14181.6435

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.091 C1 N2 H7 110.091
C1 N3 H8 110.091 C1 N3 H9 110.091
N2 C1 N3 120.352 N2 C1 H4 107.209
N2 C1 H5 107.209 N3 C1 H4 107.209
N3 C1 H5 107.209 H4 C1 H5 106.993
H6 N2 H7 106.526 H8 N3 H9 106.526
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.192      
2 N -0.667      
3 N -0.667      
4 H 0.207      
5 H 0.207      
6 H 0.278      
7 H 0.278      
8 H 0.278      
9 H 0.278      


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 -1.979 1.979
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.128 0.000 0.000
y 0.000 -26.583 0.000
z 0.000 0.000 -18.596
Traceless
 xyz
x 5.461 0.000 0.000
y 0.000 -8.721 0.000
z 0.000 0.000 3.260
Polar
3z2-r26.519
x2-y29.455
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.335 0.000 0.000
y 0.000 4.795 0.000
z 0.000 0.000 4.237


<r2> (average value of r2) Å2
<r2> 55.181
(<r2>)1/2 7.428