Lewis acids and bases-polymerization, Chemistry

Polymerization

The tendency of many molecules to aggregate and form dimmers (e.g. Al2Cl6 2), extended polymeric, or larger oligomers structures can be regarded as a donor-acceptor interaction. In the reaction.

 

1440_Untitled.png

a chlorine atom bound to one AlCl3 access nonbonding electrons to complex with the other aluminum atom; as in most other examples of this type the bridging atoms are symmetrically disposed with identical bonds to each aluminum. Polymerization of AXn molecules is more likely to happen when n is small, and when the atom A has vacant orbitals and is big enough to increase its coordination number. Many oxides and halides of stoichiometry AB3 and AB2 form structures that may be regarded as polymeric, although the distinction between an ionic one and this (polar covalent) description is not clear-cut.

 

2304_Untitled.png

 

Hydrogen bonding will also be regarded as a donor-acceptor interaction in which the acceptor LUMO is the (unoccupied) antibonding orbital of hydrogen bonded to an electronegative element.

 

Posted Date: 7/23/2012 12:36:11 AM | Location : United States







Related Discussions:- Lewis acids and bases-polymerization, Assignment Help, Ask Question on Lewis acids and bases-polymerization, Get Answer, Expert's Help, Lewis acids and bases-polymerization Discussions

Write discussion on Lewis acids and bases-polymerization
Your posts are moderated
Related Questions
The wavelength of the radiation emitted, when in a hydrogen atom electron falls from infinity to stationary state 1, would be (Rydberg constant 1.097 x 10 7 m -1 ) (1) 406 nm

Electrolytic reduction of magnesium chloride Iron cell 2. Magnesium 3. Graphite anode 4. Porcelain hood 5. Iron cathode 6. Coal gas 7. Chlorine 8. Coal gas 9. Molten ele

This cycloaddition reaction involves sixteen electrons; hence, it must be suprafacial on one component and antarafacial on the other.  Thus, it must be a [14s + 2a] or a [14a + 2s]

Uses of Starch - Biomolecules (a) Starch are used as the most useful constituent of food as rice, bread, potato and corn-flour, etc. (b) Starch are used in the creation of d

what is pyrolysis curve..

(a) Which aqueous solution has higher concentration 1 molar or 1 molar solution of the same  solute? Give reason. (b) 0.5g KCI was dissolved in 100g water and the solution origi

what is meant by 100% current efficiency in electrogravimetry


Explain the Electrode reactions and the cell reaction? A cell diagram, with its designation of the left and right electrodes, allows us to write reaction equations for the cell

Properties of Allyl iodide or 3-iodopropene-1, ICH 2 CH = CH 2 Allyl iodide is a colourless liquid. It get boils at 103.1°C.The halogen atom in allyl iodide is fairly reactive