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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B3LYP/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 B3LYP/6-311G*
 hartrees
Energy at 0K-151.244518
Energy at 298.15K-151.252545
HF Energy-151.244518
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.948386
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 B3LYP/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 3475 3358 7.65      
2 A1 3057 2954 46.73      
3 A1 1720 1662 59.72      
4 A1 1498 1447 0.67      
5 A1 1106 1069 38.82      
6 A1 869 839 1.34      
7 A1 458 442 4.66      
8 A2 3555 3435 0.00      
9 A2 1415 1367 0.00      
10 A2 1089 1052 0.00      
11 A2 268 259 0.00      
12 B1 3554 3434 3.68      
13 B1 3095 2991 35.31      
14 B1 1388 1341 0.81      
15 B1 855 827 0.54      
16 B1 415 401 100.36      
17 B2 3475 3358 0.26      
18 B2 1708 1651 1.76      
19 B2 1403 1356 20.47      
20 B2 1064 1028 69.38      
21 B2 800 773 492.33      

Unscaled Zero Point Vibrational Energy (zpe) 18132.5 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 17521.5 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 B3LYP/6-311G*
ABC
1.18709 0.29954 0.27191

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.550
N2 0.000 1.266 -0.184
N3 0.000 -1.266 -0.184
H4 0.877 0.000 1.202
H5 -0.877 0.000 1.202
H6 0.817 1.332 -0.784
H7 -0.817 1.332 -0.784
H8 -0.817 -1.332 -0.784
H9 0.817 -1.332 -0.784

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46341.46341.09291.09292.05472.05472.05472.0547
N21.46342.53202.07202.07201.01601.01602.78862.7886
N31.46342.53202.07202.07202.78862.78861.01601.0160
H41.09292.07202.07201.75422.39242.93082.93082.3924
H51.09292.07202.07201.75422.93082.39242.39242.9308
H62.05471.01602.78862.39242.93081.63383.12472.6636
H72.05471.01602.78862.93082.39241.63382.66363.1247
H82.05472.78861.01602.93082.39243.12472.66361.6338
H92.05472.78861.01602.39242.93082.66363.12471.6338

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.637 C1 N2 H7 110.637
C1 N3 H8 110.637 C1 N3 H9 110.637
N2 C1 N3 119.795 N2 C1 H4 107.412
N2 C1 H5 107.412 N3 C1 H4 107.412
N3 C1 H5 107.412 H4 C1 H5 106.742
H6 N2 H7 107.036 H8 N3 H9 107.036
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.183      
2 N -0.710      
3 N -0.710      
4 H 0.217      
5 H 0.217      
6 H 0.292      
7 H 0.292      
8 H 0.292      
9 H 0.292      


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 -2.018 2.018
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.838 0.000 0.000
y 0.000 -26.422 0.000
z 0.000 0.000 -18.366
Traceless
 xyz
x 5.556 0.000 0.000
y 0.000 -8.820 0.000
z 0.000 0.000 3.264
Polar
3z2-r26.528
x2-y29.584
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.147 0.000 0.000
y 0.000 4.413 0.000
z 0.000 0.000 4.024


<r2> (average value of r2) Å2
<r2> 54.212
(<r2>)1/2 7.363