@DrBSK Chemistry

  Semester-3   Unit-2    Fundamentals of Organic Chemistry Baeyer Strain Theory Adolf von Baeyer (a Nobel prize winner) proposed a theory in 1885 to explain the relative stability of the first few cycloalkane. The theory based on following facts: 1. Cyclo-alkanes are saturated compounds. So, all the carbons should have normal tetrahedral angle of 109 o 28 1 (or 109 o  5 1 ). 2. Any deviation of bond angles from the normal tetrahedral value would, impose a condition of internal strain on the ring called bond angle strain or Beayer strain 3. Higher value of angle strain of cycloalkane shows instability. As instability increases reactivity also increase. 4. If all the rings in cycloalkanes assumed to be planar, the bond angle strain for each ring can be calculated below  . 5. According the above table smaller ring compounds cyclo propane and cyclobutane suffer large distortion and believed to be the cause of grater instability and enhanced r...

Definition:           The rotations C-C will result in an infinite number of spatial arrangements of hydrogen atoms attached to one carbon atom with respect to the hydrogen atoms attached to the other carbon atom. These different arrangements are better known as Conformational isomers or conformers. Predominantly, these can be broadly classified into two different Types:   1)  Eclipse conformation  2)  Staggered conformation 1) Eclipse conformation      Conformation in which hydrogen atoms are attached to two carbons stay nearest to each other as possible is known as eclipsed 2) Staggered conformation      Confirmation in which hydrogen atoms attached to two carbons are as far as possible with respect to each other is known as staggered The staggered conformation is thus relatively more stable in comparison to eclipse conformation as there are minimum repulsive forces, minimum energy due to ma...

Questions 1. Derive Cp-Cv = R   2.Explain Joule-Thomson Effect 3. Explain Carnot Cycle 

 

Organo Metallic Compounds Assignment -03 1) what is Organo metallic compound and explain its Classification 2) What is 18 e- rule and explain with an example 3) Define hapticity?                                                                                                                           by                                                                                                  ...

 

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