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

Oxygen, what is the peculiar behaviour of oxygen?

what is the peculiar behaviour of oxygen?

Flocculator with dimensions , A water treatment plant is to process 30,000 ...

A water treatment plant is to process 30,000 m3/d of raw water. A tapered flocculation basin having four flocculators with velocity gradients 40/sec, 30/sec, 20/sec and 10/sec is t

Explain two characteristic superstructures, If lipids are mixed with water,...

If lipids are mixed with water, what aggregates can they form? Explain two characteristic superstructures which are commonly found in biological systems, containing our food. How i

Benzoic acid, benzoic acid from benzene.i can''t see it clearly

benzoic acid from benzene.i can''t see it clearly

Phenol , Why phenol can also be prepared from chlorobenzene(Dow''s process...

Why phenol can also be prepared from chlorobenzene(Dow''s process)

Important applications of indium, Q. Important applications of indium? ...

Q. Important applications of indium? The most important applications of indium are in protection of bearings against wear and erosion in low melting alloys and in electronic de

Periodic table, why lanthanide series is called lanthanide?

why lanthanide series is called lanthanide?

Physical change and chemical change, what are the similarities of chemical ...

what are the similarities of chemical and physical change

Elements, how to remember tyhem

how to remember tyhem

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