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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-151.217965
Energy at 298.15K-151.225978
HF Energy-151.217965
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.939415
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/6-31G**
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 3477 3341 3.83      
2 A1 3061 2941 43.92      
3 A1 1677 1611 35.74      
4 A1 1498 1440 0.03      
5 A1 1104 1060 35.54      
6 A1 862 828 0.64      
7 A1 455 438 5.66      
8 A2 3566 3426 0.00      
9 A2 1406 1351 0.00      
10 A2 1077 1034 0.00      
11 A2 272 262 0.00      
12 B1 3564 3425 1.41      
13 B1 3105 2983 30.65      
14 B1 1376 1322 0.31      
15 B1 852 818 0.28      
16 B1 410 394 98.15      
17 B2 3478 3341 0.15      
18 B2 1668 1602 2.15      
19 B2 1400 1345 22.56      
20 B2 1074 1032 65.23      
21 B2 792 761 440.97      

Unscaled Zero Point Vibrational Energy (zpe) 18085.8 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 17376.8 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 B3LYP/6-31G**
ABC
1.18301 0.30028 0.27232

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.552
N2 0.000 1.266 -0.183
N3 0.000 -1.266 -0.183
H4 0.880 0.000 1.204
H5 -0.880 0.000 1.204
H6 0.816 1.320 -0.790
H7 -0.816 1.320 -0.790
H8 -0.816 -1.320 -0.790
H9 0.816 -1.320 -0.790

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46331.46331.09521.09522.05122.05122.05122.0512
N21.46332.53152.07322.07321.01821.01822.77882.7788
N31.46332.53152.07322.07322.77882.77881.01821.0182
H41.09522.07322.07321.75982.39182.93112.93112.3918
H51.09522.07322.07321.75982.93112.39182.39182.9311
H62.05121.01822.77882.39182.93111.63133.10392.6406
H72.05121.01822.77882.93112.39181.63132.64063.1039
H82.05122.77881.01822.93112.39183.10392.64061.6313
H92.05122.77881.01822.39182.93112.64063.10391.6313

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.212 C1 N2 H7 110.212
C1 N3 H8 110.212 C1 N3 H9 110.212
N2 C1 N3 119.767 N2 C1 H4 107.382
N2 C1 H5 107.382 N3 C1 H4 107.382
N3 C1 H5 107.382 H4 C1 H5 106.918
H6 N2 H7 106.462 H8 N3 H9 106.462
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.023      
2 N -0.579      
3 N -0.579      
4 H 0.116      
5 H 0.116      
6 H 0.226      
7 H 0.226      
8 H 0.226      
9 H 0.226      


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 -2.007 2.007
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.810 0.000 0.000
y 0.000 -25.778 0.000
z 0.000 0.000 -17.859
Traceless
 xyz
x 5.009 0.000 0.000
y 0.000 -8.444 0.000
z 0.000 0.000 3.435
Polar
3z2-r26.871
x2-y28.968
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.993 0.000 0.000
y 0.000 3.973 0.000
z 0.000 0.000 3.737


<r2> (average value of r2) Å2
<r2> 53.881
(<r2>)1/2 7.340