Latest Posts

Non-Aqueous Solvents

Posted by sksaini Date: August 11, 2016

As we know most of the chemical reactions requires solution phase for them to carry out, hence for this we need different kinds of solvents. In the earlier days of development of chemistry, the reactions have been carried out only in one solvent”water”. Because of different physical and chemical properties of water such as ,Long […]

Stability of Coordination Compounds in Solution

Posted by sksaini Date: August 9, 2016

Kinetic Stability Deals with rate and mechanism of chemical reactions. Thermodynamic stability It refers to equilibrium constants and deals with bond energies ,stability constants ,redox potentials etc. •thermodynamic stability is the measure of extent of formation of a complex at equilibrium. •If the intraction between metal ion and ligand is strong the complex formed is […]

Crystal Field Theory(CFT)

Posted by sksaini Date: August 7, 2016

We know that, Valence bond theory consider the bonding between metal ion and the ligand as “purely covalent”. On the other hand crystal field theory considers the bond between metal ion and ligand as “purely Electrostatic”. i.e. this theory assumes that metal ion and ligands act as Point charges and hence intraction between them is […]

VBT:Valance Bond Theory

Posted by sksaini Date: August 1, 2016

EAN:Effective Atomic number (By-Sidgwick) The metal ion accepts electron pairs from the ligands until it achieve the next noble gas configuration. this is called EAN rule. Example: [Fe(CN)6]4- of Fe=26 No. Of electrons in Fe2+ = 24 Electrons from 6CN– ions= 12 EAN of [Fe(CN)6]4- = 36 •this Rule fails in [Ni(CN)4]2- and other […]

Coordination Compounds

Posted by sksaini Date: July 31, 2016

Coordination Compounds are those compounds which Retain their identities even when dissolved in water or any other solvent and their properties are completely different from those of constituents. •Complex ion may be defined as an electrically charged ion which consists of central metal atom or ion surrounded by a group of ions or neutral molecules. […]