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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: HF/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-150.258108
Energy at 298.15K-150.266322
HF Energy-150.258108
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.777342
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/cc-pVDZ
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 3701 3360 0.08      
2 A1 3209 2914 62.51      
3 A1 1793 1628 41.32      
4 A1 1602 1455 0.01      
5 A1 1187 1078 52.50      
6 A1 972 883 0.65      
7 A1 492 447 5.25      
8 A2 3780 3432 0.00      
9 A2 1509 1370 0.00      
10 A2 1152 1046 0.00      
11 A2 290 263 0.00      
12 B1 3779 3431 0.21      
13 B1 3253 2954 47.82      
14 B1 1482 1346 0.11      
15 B1 920 835 0.88      
16 B1 418 380 95.64      
17 B2 3701 3361 0.05      
18 B2 1789 1625 7.32      
19 B2 1508 1369 40.09      
20 B2 1188 1079 112.03      
21 B2 902 819 358.37      

Unscaled Zero Point Vibrational Energy (zpe) 19314.3 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 17537.4 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/cc-pVDZ
ABC
1.18439 0.30955 0.27930

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.555
N2 0.000 1.246 -0.185
N3 0.000 -1.246 -0.185
H4 0.876 0.000 1.205
H5 -0.876 0.000 1.205
H6 0.806 1.301 -0.786
H7 -0.806 1.301 -0.786
H8 -0.806 -1.301 -0.786
H9 0.806 -1.301 -0.786

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.44911.44911.09091.09092.03522.03522.03522.0352
N21.44912.49152.06232.06231.00711.00712.73852.7385
N31.44912.49152.06232.06232.73852.73851.00711.0071
H41.09092.06232.06231.75142.38012.91372.91372.3801
H51.09092.06232.06231.75142.91372.38012.38012.9137
H62.03521.00712.73852.38012.91371.61293.06222.6030
H72.03521.00712.73852.91372.38011.61292.60303.0622
H82.03522.73851.00712.91372.38013.06222.60301.6129
H92.03522.73851.00712.38012.91372.60303.06221.6129

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.625 C1 N2 H7 110.625
C1 N3 H8 110.625 C1 N3 H9 110.625
N2 C1 N3 118.558 N2 C1 H4 107.738
N2 C1 H5 107.738 N3 C1 H4 107.738
N3 C1 H5 107.738 H4 C1 H5 106.776
H6 N2 H7 106.411 H8 N3 H9 106.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.188      
2 N -0.289      
3 N -0.289      
4 H 0.039      
5 H 0.039      
6 H 0.078      
7 H 0.078      
8 H 0.078      
9 H 0.078      


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 -1.892 1.892
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.736 0.000 0.000
y 0.000 -25.820 0.000
z 0.000 0.000 -17.818
Traceless
 xyz
x 5.083 0.000 0.000
y 0.000 -8.543 0.000
z 0.000 0.000 3.460
Polar
3z2-r26.921
x2-y29.084
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.782 0.000 0.000
y 0.000 3.644 0.000
z 0.000 0.000 3.644


<r2> (average value of r2) Å2
<r2> 52.913
(<r2>)1/2 7.274