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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-151.050479
Energy at 298.15K-151.058511
HF Energy-151.050479
Nuclear repulsion energy83.328429
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 HSEh1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3526 3365 1.64      
2 A1 3080 2940 43.00      
3 A1 1680 1604 41.52      
4 A1 1495 1427 0.35      
5 A1 1118 1067 37.11      
6 A1 874 835 2.13      
7 A1 461 440 5.37      
8 A2 3622 3457 0.00      
9 A2 1409 1344 0.00      
10 A2 1079 1030 0.00      
11 A2 273 261 0.00      
12 B1 3620 3454 0.03      
13 B1 3129 2986 28.46      
14 B1 1380 1317 0.31      
15 B1 852 813 0.15      
16 B1 415 396 103.03      
17 B2 3527 3366 0.10      
18 B2 1671 1595 3.38      
19 B2 1398 1334 21.22      
20 B2 1113 1062 77.19      
21 B2 787 751 443.04      

Unscaled Zero Point Vibrational Energy (zpe) 18254.8 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 17420.5 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 HSEh1PBE/6-31G**
ABC
1.19212 0.30375 0.27553

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.547
N2 0.000 1.258 -0.182
N3 0.000 -1.258 -0.182
H4 0.878 0.000 1.202
H5 -0.878 0.000 1.202
H6 0.815 1.316 -0.786
H7 -0.815 1.316 -0.786
H8 -0.815 -1.316 -0.786
H9 0.815 -1.316 -0.786

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45371.45371.09531.09532.04242.04242.04242.0424
N21.45372.51512.06602.06601.01551.01552.76582.7658
N31.45372.51512.06602.06602.76582.76581.01551.0155
H41.09532.06602.06601.75592.38472.92362.92362.3847
H51.09532.06602.06601.75592.92362.38472.38472.9236
H62.04241.01552.76582.38472.92361.62923.09502.6315
H72.04241.01552.76582.92362.38471.62922.63153.0950
H82.04242.76581.01552.92362.38473.09502.63151.6292
H92.04242.76581.01552.38472.92362.63153.09501.6292

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.352 C1 N2 H7 110.352
C1 N3 H8 110.352 C1 N3 H9 110.352
N2 C1 N3 119.777 N2 C1 H4 107.455
N2 C1 H5 107.455 N3 C1 H4 107.455
N3 C1 H5 107.455 H4 C1 H5 106.560
H6 N2 H7 106.669 H8 N3 H9 106.669
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.036      
2 N -0.614      
3 N -0.614      
4 H 0.143      
5 H 0.143      
6 H 0.244      
7 H 0.244      
8 H 0.244      
9 H 0.244      


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 -2.058 2.058
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.649 0.000 0.000
y 0.000 -25.753 0.000
z 0.000 0.000 -17.766
Traceless
 xyz
x 5.111 0.000 0.000
y 0.000 -8.546 0.000
z 0.000 0.000 3.435
Polar
3z2-r26.870
x2-y29.105
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.950 0.000 0.000
y 0.000 3.924 0.000
z 0.000 0.000 3.707


<r2> (average value of r2) Å2
<r2> 53.408
(<r2>)1/2 7.308