Rings and clusters, Chemistry

Assignment Help:

 

Introduction

 

Cluster and ring compounds arise in many areas of chemistry. Rings are most often built by nonmetallic elements with directional covalent bonding. They add homoelement rings such as benzene C6H6 and S8 and ones with heteroelement bonding such as S2N2, the silicate ion [Si3O9] and borazine B3N3H6.

Clusters are polyhedral arrangements of atoms found vary openly in the periodic table: nonmetals (e.g. P4 3 and boranes discussed below), main-group metals (e.g. [Pb5]2- 4) and transition metals (often with ligands such as CO. Heteroelement bonding is also possible as in the A4B4 structure 5, include by S4N4 (where A=S and B=N) and As4S4 (where A=As and B=S).

 

 

 

751_Untitled.png


Related Discussions:- Rings and clusters

Explain sources of antioxidants, Sources of antioxidants The primary bi...

Sources of antioxidants The primary biological role of antioxidant is in preventing the damage that reactive free radical can cause to cells and cellular compounds. In fact, al

Define why the glocose and fructose form the same osazone, Glucose and fruc...

Glucose and fructose are epimers so they are differ in their second carbon position and remaining is same so when they react with phenylhydrazeen they give same osazone

What do you mean by dietary fibre, Q. What do you mean by Dietary fibre? ...

Q. What do you mean by Dietary fibre? Dietary fibre is an imporatant ingredient in food and comprises of  a diverse group of plant substances viz. celluloses, hemicelluloses, l

Estimation of protein, what is the concentration of ammonium sulphate solut...

what is the concentration of ammonium sulphate solution and how it is prepared?

Similar principle quantum number, Describe why shielding is more effective ...

Describe why shielding is more effective by electrons in a shell of lower principle quantum number than by electrons having the similar principle quantum number.

Calculstion question, Nitrous acid (HNO2) is an unstable compound when prep...

Nitrous acid (HNO2) is an unstable compound when prepared by the following reaction: HCl (g) + NaNO2 (s) ? HNO2 (l) + NaCl (s). As the product of the above reaction is unstable, t

Correct configuration of fe+3 [26] is, Correct configuration of Fe +3   [2...

Correct configuration of Fe +3   [26] is: (1) 1s 2 , 2s 2 , 2p 6, 3s 2, 3p 6 , 3d5          (2) 1s 2 , 2s 2, sp 6 , 3s 2 , 3p 6 , 3d 3 , 4s 2     (3) 1s 2 , 2s 2 , 2p

Calculate the value for the standard molar reaction entropy, Calculate the ...

Calculate the Value for the Standard Molar Reaction Entropy? Derive an expression for the standard molar reaction entropy of a reaction that can be used to calculate its

Witt''s theory of colour, what do you mean by the terms chromogen,auxochrom...

what do you mean by the terms chromogen,auxochrome,bathochrome and hyposochrome?what role do they play in relation to colour and constitution?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd