Capping Principle||Organometallic Chemistry CSIR NET/GATE Inorganic Chemistry

In organometallic chemistry cluster geometry is most important part also lots of people are confuse about capping principle. Here i will clear all the doubt.

Capping Principle Organometallic Chemistry PDF

Video lecture-

Peroxide||Organic Reagent Series||CSIR NET/GATE/IIT JAM/M.SC CHEMISTRY

Peroxides are a group of compounds with the structure 

R−O−O−R, where R = any element.

The O−O group in a peroxide is called the peroxide group or peroxo group. 

The nomenclature is somewhat variable.

PDF-PEROXIDE REAGENT PDF

Diastereoselctivity In Acyclic Alkene||Organic Chemistry From Clayden

In organic chemistry tge stereoselectivity is rhe most confusing topic.here is tge odf of diastereoselectivity from clayden book which will clear all your doubts related to the stereoselectivity.

PDF-Diastereoselectivity In Acyclic Alkene pdf

Bayer Villiger Oxidation||Reagent Chemistry

Baeyer-Villiger Oxidation

In Baeyer Villiger oxidation a carbonyl

Compound and an aromatic peracid react via insertion of the peroxo-O atom next to the C=O bond of the carbonyl compound.

The Baeyer–Villiger Reaction is a commonly used oxidation reaction in organic synthesis is the conversion of carbonyl compounds into the corresponding esters or lactones

PDF-Baeyer Oxidation pdf

m-CPBA REAGENT||oxidizing Reagent||CSIR NET CHEMISTRY

 meta-Chloroperoxybenzoic acid (mCPBA or mCPBA) is a peroxycarboxylic acid. A white solid, it is used widely as an oxidant in organic synthesis. 

mCPBA is often preferred to other peroxy acids because of its relative ease of handling.

mCPBA is a strong oxidizing agent that may cause fire upon contact with flammable material.

PdF-m-CPBA REAGENT PDF

OPPENAUER OXIDATION|CSIR NET REAGENT CHEMISRTY

Oppenauer Oxidation is the process of conversion of secondary alcohols to ketones by selective oxidation. This reaction is named after Rupert Viktor Oppenauer. Oxidation reaction takes place in the presence of [Al(i-Pro)3] in excess of acetone.

It is an aluminium alkoxide catalysed the oxidation of a secondary alcohol to the corresponding ketone. This is reverse of the Meerwein Ponndorf Verley reduction. It is a very good method to oxidize allylic alcohols to α, β- unsaturated ketones.

PdF-OPPENAUER OXIDATION PDF

Isolobal Analogy||Organometallic Chèmistry

 

In previous post we learn about Metal metal bondong in low nuclear carbonyl clusters.

Now before moving on high nuclear carbonyl cluster we should talk about isolobal analogy.

PdF-Isolobal analogy|Organometallic chemistry

SeO2-Selenium dioxide||Oxidizing reagent||CSIR NET ORGANIC CHEMISTRY

 Selenium dioxide, SeO₂ is an oxidizing agent generally employed in the allylic oxidation of alkenes to furnish allylic alcohols, which may be further oxidized to conjugated aldehydes or ketones.

 It is also used to oxidize the α-methylene group adjacent to a carbonyl group to give a 1,2-dicarbonyl compound. However selenium dioxide can perform several common types of oxidations, such as alcohols to ketones or aldehydes. 

PDF-SeO2 Oxidizing reagent

The oxidations of methylene groups using Selenium dioxide are referred to as Riley oxidations.

Note: SeO₂ is sometimes referred to as selenium(IV) oxide.

Selenium oxide can also be used to oxidize alkynes in presence of acids. The internal alkynes are converted to 1,2-dicarbonyl compounds, whereas terminal alkynes are oxidized to glyoxylic acids.

It also oxidizes benzylic methylene, CH₂ group to C=O.

SARETT OXIDATION||chromium based oxidizing reagent

 The Sarett oxidation is 

an organic reaction that oxidizes primary and secondary alcohols to aldehydes and ketones, respectively, 

using

chromium trioxide and pyridine. 

Unlike the similar Jones oxidation, the Sarett oxidation will not further oxidize primary alcohols to their carboxylic acid form, neither will it affect carbon-carbon double bonds.

Use of the original Sarett oxidation has become largely antiquated however, in favor of other modified oxidation techniques.

 The unadulterated reaction is still occasionally used in teaching settings and in small scale laboratory research.

PDF-chromium based oxidizing reagent

Metal Metal bond in organometallic LNCC ||CSIR NET ORGANOMETALLIC CHEMISTRY

 

In    previous part we read about 18 electron rule in organometallic chemistry now here we will moving towards the cluster chemistry.

In organometallic there are two type of carbonyl clusters

LNCC AND HNCC

In LNCC we can find the structure by finding metal metal bond.

DOWNLOAD PDF-Metal metal bond in LNCC

CSIR NET PREVIOUS YEAR QUESTUONS-

18 Electron Rule-Organometallic Chemistry (CSIR NET/JRF,/GATE/IIT JAM)

   18 electron rule is the main base of organometanic chemistry.

Mostly 18 electron containing compounds are stable.

In a organometallic metal is present with many type of ligands so for counting electron we should know ligand contribution which is given in this table-

DOWNLOAD THE PDF-18 Electron Rule Organometallic Chemistry

PREVIOUS YEAR CSIR NET QUESTIONS FROM 18 ELECTRON RULE-

PCC | PDC Reagent||CSIR NET CHEMISTRY||ORGANIC REAGENT||IIT JAM CHEMISTRY| GATE CHEMISTRY

Pyridinium dichromate is the pyridinium salt of dichromate that can be obtained by addition of pyridine to a solution of chromium trioxide in water.

The orange salt is commercially available and can by conveniently handled and stored; it is non-hygroscopic and soluble in many organic solvents. A similar salt is pyridinium chlorochromate (PCC), which shares the same properties. Both PDC and PCC can convert alcohols into aldehydes and ketones, especially in dichloromethane at room temperature. PDC is less acidic than PCC and is therefore more suitable for the oxidation of acid-sensitive substrates.

PDF-PCC &PDC REAGENT 

Thermodynamics MCQ Part -2||RPSC COLLEGE PROFFESOR/GPSC/PPSC/1st Grade/SET/NEET/ CSIR NET CHEMISTRY

in this video we are covering MCQ of  thermodynamics with tricks.

here  we are covering RPSC college proffesor  chemistry syllabus.

Here you will find questions related to 2nd law of thermodynamics, entropy, gibbs helmholtz equation, joule thomson effect.

PDF-Thernodynamic MCQ part 2

All the questions are from previous year question paper of RPSC, NEET, SET,GPSC, CSIR NET EXAM.

this video will helpful for all the compation exams like CSIR NET, pgt chemistry, bhu chemistry, du entrance, phd entrance, NEET, IIT JAM, MH- SET, GSET and other exams.

Thermodynamics MCQ Part -1||RPSC COLLEGE PROFFESOR/GPSC/PPSC/1st Grade/SET/NEET/ CSIR NET CHEMISTRY

in this video we are covering MCQ of  thermodynamics with tricks.

here  we are covering RPSC college proffesor  chemistry syllabus.

PDF-THERMODYNAMIC MCQ PART 1

All the questions are from previous year question paper of RPSC, NEET, SET,GPSC, CSIR NET EXAM.

this video will helpful for all the compation exams like CSIR NET, pgt chemistry, bhu chemistry, du entrance, phd entrance, NEET, IIT JAM, MH- SET, GSET and other exams.

Thermodynamics is a field of science that deals with the quantitative relationships between energy sources, and the study of heat and work interconversion. There are four rules of thermodynamics, and these are: zero law states that if two systems are in thermal equilibrium with a third system, then the first two systems are in thermal equilibrium. The first law states that, the total energy of an isolated system remains constant, it is a law of conservation of energy. The energy can neither be created nor destroyed, it can only be transferred from one form to another. The second law of thermodynamics states that, over time, the entropy of an isolated system that is not in equilibrium must rise and achieve the ultimate equilibrium value. Third law of thermodynamics states that the entropy of a system becomes constant as the temperature approaches absolute zero. The viability of a given transformation is determined by thermodynamics.

A thermodynamic process where no heat is exchanged with the surroundings is

1. isothermal
2. adiabatic
3. isobaric
4. isotropic

Answer: (b)