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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-150.273565
Energy at 298.15K-150.281750
HF Energy-150.273565
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.870557
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 HF/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 3734 3377 1.78      
2 A1 3227 2918 64.04      
3 A1 1860 1682 68.14      
4 A1 1630 1474 0.10      
5 A1 1189 1076 58.71      
6 A1 968 875 1.55      
7 A1 493 445 4.68      
8 A2 3810 3445 0.00      
9 A2 1530 1384 0.00      
10 A2 1159 1049 0.00      
11 A2 276 250 0.00      
12 B1 3809 3445 0.66      
13 B1 3264 2952 53.33      
14 B1 1503 1359 0.03      
15 B1 921 833 1.52      
16 B1 413 374 110.27      
17 B2 3735 3378 0.16      
18 B2 1851 1674 6.93      
19 B2 1527 1381 36.69      
20 B2 1176 1063 116.21      
21 B2 892 806 436.76      

Unscaled Zero Point Vibrational Energy (zpe) 19483.3 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 17620.7 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 HF/6-311G*
ABC
1.19664 0.30790 0.27839

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/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 1.247 -0.187
N3 0.000 -1.247 -0.187
H4 0.870 0.000 1.198
H5 -0.870 0.000 1.198
H6 0.806 1.321 -0.774
H7 -0.806 1.321 -0.774
H8 -0.806 -1.321 -0.774
H9 0.806 -1.321 -0.774

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45051.45051.08261.08262.03802.03802.03802.0380
N21.45052.49482.05672.05670.99930.99932.75462.7546
N31.45052.49482.05672.05672.75462.75460.99930.9993
H41.08262.05672.05671.73952.37372.90472.90472.3737
H51.08262.05672.05671.73952.90472.37372.37372.9047
H62.03800.99932.75462.37372.90471.61163.09402.6412
H72.03800.99932.75462.90472.37371.61162.64123.0940
H82.03802.75460.99932.90472.37373.09402.64121.6116
H92.03802.75460.99932.37372.90472.64123.09401.6116

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.253 C1 N2 H7 111.253
C1 N3 H8 111.253 C1 N3 H9 111.253
N2 C1 N3 118.631 N2 C1 H4 107.690
N2 C1 H5 107.690 N3 C1 H4 107.690
N3 C1 H5 107.690 H4 C1 H5 106.911
H6 N2 H7 107.476 H8 N3 H9 107.476
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.070      
2 N -0.809      
3 N -0.809      
4 H 0.214      
5 H 0.214      
6 H 0.315      
7 H 0.315      
8 H 0.315      
9 H 0.315      


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 -2.046 2.046
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.555 0.000 0.000
y 0.000 -26.550 0.000
z 0.000 0.000 -18.090
Traceless
 xyz
x 5.765 0.000 0.000
y 0.000 -9.228 0.000
z 0.000 0.000 3.463
Polar
3z2-r26.925
x2-y29.995
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.828 0.000 0.000
y 0.000 3.758 0.000
z 0.000 0.000 3.641


<r2> (average value of r2) Å2
<r2> 53.199
(<r2>)1/2 7.294