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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: LSDA/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/TZVP
 hartrees
Energy at 0K-150.480002
Energy at 298.15K-150.487875
HF Energy-150.480002
Nuclear repulsion energy83.467875
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 LSDA/TZVP
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 3429 3389 0.02      
2 A1 2979 2944 29.60      
3 A1 1595 1576 62.71      
4 A1 1401 1385 1.91      
5 A1 1078 1066 33.44      
6 A1 786 777 20.85      
7 A1 446 441 0.85      
8 A2 3525 3484 0.00      
9 A2 1341 1325 0.00      
10 A2 1031 1019 0.00      
11 A2 249 246 0.00      
12 B1 3522 3481 5.05      
13 B1 3022 2987 17.23      
14 B1 1311 1296 0.11      
15 B1 816 806 0.01      
16 B1 403 398 89.06      
17 B2 3431 3391 0.92      
18 B2 1583 1565 9.22      
19 B2 1333 1318 14.75      
20 B2 1099 1086 109.66      
21 B2 666 658 482.71      

Unscaled Zero Point Vibrational Energy (zpe) 17521.3 cm-1
Scaled (by 0.9884) Zero Point Vibrational Energy (zpe) 17318.1 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 LSDA/TZVP
ABC
1.20240 0.30491 0.27797

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.538
N2 0.000 1.247 -0.183
N3 0.000 -1.247 -0.183
H4 0.879 0.000 1.203
H5 -0.879 0.000 1.203
H6 0.829 1.356 -0.769
H7 -0.829 1.356 -0.769
H8 -0.829 -1.356 -0.769
H9 0.829 -1.356 -0.769

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.43991.43991.10231.10232.05742.05742.05742.0574
N21.43992.49382.06072.06071.02141.02142.79402.7940
N31.43992.49382.06072.06072.79402.79401.02141.0214
H41.10232.06072.06071.75832.39322.94002.94002.3932
H51.10232.06072.06071.75832.94002.39322.39322.9400
H62.05741.02142.79402.39322.94001.65863.17892.7119
H72.05741.02142.79402.94002.39321.65862.71193.1789
H82.05742.79401.02142.94002.39323.17892.71191.6586
H92.05742.79401.02142.39322.94002.71193.17891.6586

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 112.300 C1 N2 H7 112.300
C1 N3 H8 112.300 C1 N3 H9 112.300
N2 C1 N3 119.982 N2 C1 H4 107.561
N2 C1 H5 107.561 N3 C1 H4 107.561
N3 C1 H5 107.561 H4 C1 H5 105.789
H6 N2 H7 108.574 H8 N3 H9 108.574
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.357      
2 N -0.430      
3 N -0.430      
4 H 0.188      
5 H 0.188      
6 H 0.210      
7 H 0.210      
8 H 0.210      
9 H 0.210      


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 -1.985 1.985
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.924 0.000 0.000
y 0.000 -26.171 0.000
z 0.000 0.000 -18.909
Traceless
 xyz
x 5.615 0.000 0.000
y 0.000 -8.254 0.000
z 0.000 0.000 2.639
Polar
3z2-r25.278
x2-y29.246
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.565 0.000 0.000
y 0.000 5.218 0.000
z 0.000 0.000 4.623


<r2> (average value of r2) Å2
<r2> 53.784
(<r2>)1/2 7.334