What are polyanionic compounds?

Polyanionic compounds have emerged as novel lithium insertion compounds and considered as the most advanced positive electrodes for the next generation of Li-ion batteries owing to their advantages with regard to low cost, non-toxicity, environmental friendliness, and high safety.

What are Zintl compounds?

Zintl compounds are defined as valence precise intermetallic phases in which electropositive cations donate electrons to covalently bonded polyanions. The structural complexity characteristic of Zintl compounds leads to glass-like lattice thermal conductivity, making them ideal thermoelectric materials.

What are poly anions?

polyanion (plural polyanions) (chemistry) Any anion having more than one negative charge. (chemistry) Any compound having multiple anion moieties, especially one based on a polymer.

What is Zintl Isoelectronic relationship in solids?

He suggested that the structures of Zintl phases were ionic, where there was complete electron transfer from the more electropositive metal. These ideas were further developed to become the Zintl rule or Zintl Klemm concept, where the polyanion structure should be similar to an isoelectronic element.

Why is DNA a Polyanion?

There are other reasons why polyanions are useful genetic molecules, other than their resistance to nucleophilic attack. Since it has less charge density than dsDNA, it can actually form dsRNA helices, so it can carry genetic information, as well as form complex 3D shapes necessary for its activity as an ribozyme.

Are nucleic acids Polyanions?

Nucleic acids are a relatively abundant biological polyanion that can bind to positively charged misfolding protein or aggregates.

What are Isolobal species?

Isobal species are those pairs whose frontier orbitals which are same in number, have similar symmetry, have approximately the same energy and have the same number of electrons on them.

What is the definition of anion in chemistry?

anion, atom or group of atoms carrying a negative electric charge.

Is Heparin a polyanion?

Polyanions such as heparin and DNA have multiple binding sites along the polymer chain.

What is meant by Nephelauxetic effect?

The nephelauxetic effect is a term used in the inorganic chemistry of transition metals. It refers to a decrease in the Racah interelectronic repulsion parameter, given the symbol B, that occurs when a transition-metal free ion forms a complex with ligands.

Why are nucleic acids Polyanions?

RNA is a polyanion. In order to form stable structures, it requires counterions to neutralize the repulsions of the negatively charged backbone phosphates.

What is nucleic acid function?

Nucleic acids, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), carry genetic information which is read in cells to make the RNA and proteins by which living things function. The well-known structure of the DNA double helix allows this information to be copied and passed on to the next generation.