(A) Both are planer and non polar
(B) Both have aromatic character
(C) Both have ppi-ppi bond formed
by pairing of unpaired electrons
(D) Electrophilic subtitution reaction occurs at B3N3H6
SOLUTION:(
A,B,D) In Boraxine ion boron and oxygen atom alternatively
combined to form six member ring and also each boron atom linked with extra
oxygen atoms. Both boron and oxygen atoms have sp2 hybridization (by Back
bonding and all oxygen atom involved in back bonding) and planer structure due
to fact ring become aromatic but due to sp3 hybrisation of oxygen atom molecule
become polar.
In
Borazine (Inorganic Benzene) molecule, nitrogen is more electro negative than
the boron. Nitrogen acquires partial negative charge and boron acquires partial
positive charge and back bonding take place between boron and nitrogen.
Even
though Borazine and Benzene have same stricture their chemical properties are
different.
(1)
Organic benzene is C6H6 while Inorganic benzene is
Borazine having chemical formula B3N3H6
(2)
Borazine is more reactive than Benzene with repect to electrophic
addition reactions due to high
polarity (B-N polar bond) of Borazine plecules.
(3) Aromaticity
of borazine is less than benzene hence it is less reactive
toward Eectrophilic substitution reactions than Benzene.
Hence options (A), (B) and (D) is correct But Option (C) is Incorrect Both
have pi-bond due to back bonding not due
to formed by pairing of unpaired electrons
Why aqueous
solution of AlCl3 is acidic in nature ?
What happen when
aq AlCl3 react with Acid or Base?
Although
anhydrous aluminium chloride is covalent but its aqueous solution is ionic in
nature. Why?
Why BF3 do not
exist as dimer?. Explain.
Why B-F bond
length in BF3 is shorter (130 pm) than B-F bond Iength in BF4- (143 pm)?.
Explain.
B-F bond length
in BF3 is shorter than B-F bond length in (BF4)- why?
What is product
of reaction between diborane (B2H6) and ammmonia (NH3)?
Why methylation
of Diborane (B2H6) replace four hydrogen only ?
What is use of
Orthoboric acids?
What is basicity
of "Boric acid" ?
Why Boric acid
exist in solid state ?
What is
structure of solid Ortho Boric acid ?
What is effect
of heat on Borax?
What is the
structure of trimetaboric acid and trimetaborate ion?
What is the
Sodium per borate ,give the structure and its uses?
Why aqueous
solution of borax reacts with two moles of acids ?
What is the
molecular formula of Borax ?
Why Boric acid
become strong acid in the presence of cis 1,2-diol or 1,3-diol ?
Why Borazine is
more reactive than benzene towards Electrophic Aromatic substitution reactions
?
Why Borazine
(B3N3H6) is also known as inorganic benzene ?.
Four-center
two-electron bond (4C-2e Bond): Structure of AlCl3:
What is the difference between the structure of AlCl3 and diborane?
No comments:
Post a Comment