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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: LSDA/6-31G**

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/6-31G**
 hartrees
Energy at 0K-150.421943
Energy at 298.15K-150.429893
HF Energy-150.421943
Nuclear repulsion energy83.369089
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/6-31G**
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 3415 3351 2.04      
2 A1 2987 2931 34.71      
3 A1 1605 1575 41.83      
4 A1 1420 1394 0.94      
5 A1 1097 1077 28.41      
6 A1 837 821 4.16      
7 A1 447 439 4.93      
8 A2 3514 3449 0.00      
9 A2 1346 1320 0.00      
10 A2 1037 1017 0.00      
11 A2 268 263 0.00      
12 B1 3510 3445 0.06      
13 B1 3036 2979 19.72      
14 B1 1322 1297 0.82      
15 B1 820 804 0.00      
16 B1 424 416 102.50      
17 B2 3417 3354 0.02      
18 B2 1595 1565 3.48      
19 B2 1332 1307 16.62      
20 B2 1114 1093 81.00      
21 B2 718 704 472.10      

Unscaled Zero Point Vibrational Energy (zpe) 17630.5 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 17300.8 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/6-31G**
ABC
1.19147 0.30570 0.27777

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.541
N2 0.000 1.252 -0.179
N3 0.000 -1.252 -0.179
H4 0.883 0.000 1.207
H5 -0.883 0.000 1.207
H6 0.823 1.314 -0.788
H7 -0.823 1.314 -0.788
H8 -0.823 -1.314 -0.788
H9 0.823 -1.314 -0.788

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.44441.44441.10551.10552.04232.04232.04232.0423
N21.44442.50362.06592.06591.02571.02572.76222.7622
N31.44442.50362.06592.06592.76222.76221.02571.0257
H41.10552.06592.06591.76522.38972.93542.93542.3897
H51.10552.06592.06591.76522.93542.38972.38972.9354
H62.04231.02572.76222.38972.93541.64623.10052.6274
H72.04231.02572.76222.93542.38971.64622.62743.1005
H82.04232.76221.02572.93542.38973.10052.62741.6462
H92.04232.76221.02572.38972.93542.62743.10051.6462

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.394 C1 N2 H7 110.394
C1 N3 H8 110.394 C1 N3 H9 110.394
N2 C1 N3 120.141 N2 C1 H4 107.485
N2 C1 H5 107.485 N3 C1 H4 107.485
N3 C1 H5 107.485 H4 C1 H5 105.947
H6 N2 H7 106.736 H8 N3 H9 106.736
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.123      
2 N -0.585      
3 N -0.585      
4 H 0.152      
5 H 0.152      
6 H 0.247      
7 H 0.247      
8 H 0.247      
9 H 0.247      


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 -2.109 2.109
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.792 0.000 0.000
y 0.000 -25.623 0.000
z 0.000 0.000 -17.938
Traceless
 xyz
x 4.989 0.000 0.000
y 0.000 -8.258 0.000
z 0.000 0.000 3.269
Polar
3z2-r26.538
x2-y28.832
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.124 0.000 0.000
y 0.000 4.142 0.000
z 0.000 0.000 3.878


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