Give examples of steric effects, Chemistry

Assignment Help:

Give Examples of steric effects

These are both examples of steric effects. Placing three highly branched groups around a central boron results in van der Waals repulsions. These repulsions are severe enough that only two groups can be bound to boron in the case of disiamylborane, and only one group in the case of thexylborane. (Notice the greater number of alkyl substitutions in the "thexyl" group.) Now, alkyl branches stabilize sp2-hybridized boron (see the solution to Problem 4.48 on p. 62 of the Study Guide and Solutions Manual) just as they stabilize sp2-hybridized carbon; but if the alkyl branches are themselves branched, they form a thicket of methyl groups that interact repulsively with each other as more of these branches are accumulated. These repulsive interactions reduce the relative stability of the trialkylboranes-evidently, so much so that they cannot form.

 


Related Discussions:- Give examples of steric effects

Explain electrical conductivity and molar conductivity, Explain electrical ...

Explain electrical conductivity and molar conductivity of a solution and write the units of molar conductivity

Vertical and diagonal relationship, I want lecture notes about vertical and...

I want lecture notes about vertical and diagonal relationship of first row elements with other elements of periodic table

Refining of petroleum, Refining of petroleum: Petroleum (crude) extract...

Refining of petroleum: Petroleum (crude) extracted from earth's crust is an intimate mixture of many organic compounds. Crude petroleum needs to be purified and its components

Difference between oraganic and inoraganic compounds, An organic compound i...

An organic compound is any member of a large class of chemical compounds which molecules have carbon and hydrogen; thus, carbides, carbonates, carbon oxides and elementary carbon

Ions, what are ions

what are ions

most and least stable isotope of hydrogen?, 5H is the most stable, and the...

5H is the most stable, and the least stable isotope is 7H

Liquefaction of gases, Assainment of liquefaction of gases in degr...

Assainment of liquefaction of gases in degree 2 nd sem

Define uncertainty, This brings us to one thing that uniformly drives stude...

This brings us to one thing that uniformly drives students crazy. When anything is measured in the lab, you must keep track of how accurately you can measure it. If you measure you

Ionisation energy, does ionization energy ddepends on principal quantum n...

does ionization energy ddepends on principal quantum number

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