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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-151.173505
Energy at 298.15K-151.181528
HF Energy-151.173505
Nuclear repulsion energy83.464252
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 B1B95/6-311G**
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 3526 3386 1.44      
2 A1 3078 2955 43.79      
3 A1 1671 1605 48.34      
4 A1 1490 1430 0.52      
5 A1 1110 1066 37.84      
6 A1 869 835 3.09      
7 A1 456 437 4.43      
8 A2 3613 3469 0.00      
9 A2 1404 1348 0.00      
10 A2 1078 1035 0.00      
11 A2 267 256 0.00      
12 B1 3611 3467 0.00      
13 B1 3120 2995 30.55      
14 B1 1374 1319 0.65      
15 B1 850 816 0.42      
16 B1 408 392 92.11      
17 B2 3528 3387 0.04      
18 B2 1663 1597 4.04      
19 B2 1393 1337 21.14      
20 B2 1103 1059 84.08      
21 B2 783 752 430.54      

Unscaled Zero Point Vibrational Energy (zpe) 18197.8 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 17471.7 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 B1B95/6-311G**
ABC
1.19410 0.30474 0.27627

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.548
N2 0.000 1.255 -0.183
N3 0.000 -1.255 -0.183
H4 0.874 0.000 1.201
H5 -0.874 0.000 1.201
H6 0.813 1.317 -0.782
H7 -0.813 1.317 -0.782
H8 -0.813 -1.317 -0.782
H9 0.813 -1.317 -0.782

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45261.45261.09101.09102.04172.04172.04172.0417
N21.45262.51012.06262.06261.01241.01242.76382.7638
N31.45262.51012.06262.06262.76382.76381.01241.0124
H41.09102.06262.06261.74892.38172.91852.91852.3817
H51.09102.06262.06261.74892.91852.38172.38172.9185
H62.04171.01242.76382.38172.91851.62683.09662.6349
H72.04171.01242.76382.91852.38171.62682.63493.0966
H82.04172.76381.01242.91852.38173.09662.63491.6268
H92.04172.76381.01242.38172.91852.63493.09661.6268

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.574 C1 N2 H7 110.574
C1 N3 H8 110.574 C1 N3 H9 110.574
N2 C1 N3 119.539 N2 C1 H4 107.522
N2 C1 H5 107.522 N3 C1 H4 107.522
N3 C1 H5 107.522 H4 C1 H5 106.550
H6 N2 H7 106.923 H8 N3 H9 106.923
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.078      
2 N -0.465      
3 N -0.465      
4 H 0.137      
5 H 0.137      
6 H 0.183      
7 H 0.183      
8 H 0.183      
9 H 0.183      


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 -1.896 1.896
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.725 0.000 0.000
y 0.000 -25.757 0.000
z 0.000 0.000 -18.066
Traceless
 xyz
x 5.186 0.000 0.000
y 0.000 -8.362 0.000
z 0.000 0.000 3.176
Polar
3z2-r26.351
x2-y29.032
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.153 0.000 0.000
y 0.000 4.399 0.000
z 0.000 0.000 4.066


<r2> (average value of r2) Å2
<r2> 53.381
(<r2>)1/2 7.306