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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B1B95/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/cc-pVTZ
 hartrees
Energy at 0K-151.189552
Energy at 298.15K-151.197528
HF Energy-151.189552
Nuclear repulsion energy83.596568
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 B1B95/cc-pVTZ
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 3525 3373 1.03      
2 A1 3075 2943 39.55      
3 A1 1666 1595 41.72      
4 A1 1491 1427 0.21      
5 A1 1106 1058 35.58      
6 A1 856 819 2.63      
7 A1 453 434 3.08      
8 A2 3612 3457 0.00      
9 A2 1399 1339 0.00      
10 A2 1072 1026 0.00      
11 A2 252 241 0.00      
12 B1 3610 3455 0.58      
13 B1 3115 2982 25.89      
14 B1 1370 1311 0.29      
15 B1 846 809 0.12      
16 B1 387 371 81.05      
17 B2 3526 3374 1.05      
18 B2 1656 1585 5.15      
19 B2 1388 1328 18.74      
20 B2 1099 1052 81.14      
21 B2 779 746 407.69      

Unscaled Zero Point Vibrational Energy (zpe) 18140.3 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 17362.1 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 B1B95/cc-pVTZ
ABC
1.19667 0.30578 0.27716

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.549
N2 0.000 1.252 -0.183
N3 0.000 -1.252 -0.183
H4 0.873 0.000 1.198
H5 -0.873 0.000 1.198
H6 0.812 1.318 -0.780
H7 -0.812 1.318 -0.780
H8 -0.812 -1.318 -0.780
H9 0.812 -1.318 -0.780

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45051.45051.08871.08872.04042.04042.04042.0404
N21.45052.50482.05922.05921.01021.01022.76122.7612
N31.45052.50482.05922.05922.76122.76121.01021.0102
H41.08872.05922.05921.74692.37852.91462.91462.3785
H51.08872.05922.05921.74692.91462.37852.37852.9146
H62.04041.01022.76122.37852.91461.62443.09672.6365
H72.04041.01022.76122.91462.37851.62442.63653.0967
H82.04042.76121.01022.91462.37853.09672.63651.6244
H92.04042.76121.01022.37852.91462.63653.09671.6244

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.763 C1 N2 H7 110.763
C1 N3 H8 110.763 C1 N3 H9 110.763
N2 C1 N3 119.401 N2 C1 H4 107.528
N2 C1 H5 107.528 N3 C1 H4 107.528
N3 C1 H5 107.528 H4 C1 H5 106.698
H6 N2 H7 107.026 H8 N3 H9 107.026
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.074      
2 N -0.343      
3 N -0.343      
4 H 0.113      
5 H 0.113      
6 H 0.133      
7 H 0.133      
8 H 0.133      
9 H 0.133      


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 -1.783 1.783
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.794 0.000 0.000
y 0.000 -25.593 0.000
z 0.000 0.000 -18.250
Traceless
 xyz
x 5.128 0.000 0.000
y 0.000 -8.071 0.000
z 0.000 0.000 2.943
Polar
3z2-r25.886
x2-y28.799
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.366 0.000 0.000
y 0.000 4.838 0.000
z 0.000 0.000 4.445


<r2> (average value of r2) Å2
<r2> 53.282
(<r2>)1/2 7.299