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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-150.289222
Energy at 298.15K-150.297397
HF Energy-150.289222
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.853582
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 3714 3374 0.08      
2 A1 3203 2910 59.48      
3 A1 1803 1638 54.24      
4 A1 1621 1473 0.02      
5 A1 1175 1067 58.19      
6 A1 950 863 3.28      
7 A1 491 446 4.10      
8 A2 3793 3446 0.00      
9 A2 1516 1377 0.00      
10 A2 1149 1044 0.00      
11 A2 278 253 0.00      
12 B1 3793 3446 0.21      
13 B1 3240 2944 48.65      
14 B1 1485 1349 0.03      
15 B1 919 835 1.22      
16 B1 408 371 98.78      
17 B2 3714 3374 0.12      
18 B2 1798 1634 9.96      
19 B2 1517 1379 32.09      
20 B2 1175 1068 112.23      
21 B2 868 789 400.00      

Unscaled Zero Point Vibrational Energy (zpe) 19305.3 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 17538.9 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
1.19291 0.30838 0.27871

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 0.554
N2 0.000 1.246 -0.187
N3 0.000 -1.246 -0.187
H4 0.871 0.000 1.199
H5 -0.871 0.000 1.199
H6 0.807 1.320 -0.775
H7 -0.807 1.320 -0.775
H8 -0.807 -1.320 -0.775
H9 0.807 -1.320 -0.775

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45011.45011.08381.08382.03922.03922.03922.0392
N21.45012.49232.05772.05771.00081.00082.75302.7530
N31.45012.49232.05772.05772.75302.75301.00081.0008
H41.08382.05772.05771.74212.37502.90742.90742.3750
H51.08382.05772.05771.74212.90742.37502.37502.9074
H62.03921.00082.75302.37502.90741.61443.09382.6392
H72.03921.00082.75302.90742.37501.61442.63923.0938
H82.03922.75301.00082.90742.37503.09382.63921.6144
H92.03922.75301.00082.37502.90742.63923.09381.6144

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.290 C1 N2 H7 111.290
C1 N3 H8 111.290 C1 N3 H9 111.290
N2 C1 N3 118.483 N2 C1 H4 107.717
N2 C1 H5 107.717 N3 C1 H4 107.717
N3 C1 H5 107.717 H4 C1 H5 106.971
H6 N2 H7 107.515 H8 N3 H9 107.515
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 0.112      
2 N -0.498      
3 N -0.498      
4 H 0.098      
5 H 0.098      
6 H 0.172      
7 H 0.172      
8 H 0.172      
9 H 0.172      


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 -1.911 1.911
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.621 0.000 0.000
y 0.000 -26.079 0.000
z 0.000 0.000 -17.997
Traceless
 xyz
x 5.417 0.000 0.000
y 0.000 -8.770 0.000
z 0.000 0.000 3.353
Polar
3z2-r26.706
x2-y29.457
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.910 0.000 0.000
y 0.000 3.906 0.000
z 0.000 0.000 3.755


<r2> (average value of r2) Å2
<r2> 53.076
(<r2>)1/2 7.285