Welcome to Chem Zipper.com......

Search This Blog

Thursday, December 24, 2020

What is structure (CF3)2-Al-O-Al-(CF3)2 and also find the number of pi bond or Back bond?

Generally neutral atom donates only one lone pair to back bonding because after that, electron density on that atom itself highly reduced but the compound [(CF3)2-Al-O-Al-(CF3)2] is a rare example of two lone pair donation.

Related Questions:

Why trimethylamine amine ( N(CH3)3) is tetrahedral while trisilyl amine (N(SiH3)3) planner.?









What are the structure of (1) N(SiH3)3 (2) {(Me)3Si}2N-Si(Me)3 (3) HN(SiH3)2 and give the Answers of following questions?

 

Q (1): which is greater x or y?
Q (2): which is greater x or z?
Q (3): which have greater extent of back Bonding?

SOLUTION:

Ans: (1): ‘y’ is greater than ‘x’ because of steric repulsion of -CH3 group.

Ans: (2): “z’ will be greater because one lone pair going two places.

Ans; (3): the extant of back bonding is 3rd >1st > 2nd 

Which of the following is correct order of (B-O) bond length of following compounds? (1) B(OH)3 (2) B(OMe)3 and (3) B(Me)2OH

 SOLUTION:


Extent Back Bonding is   3>1>2 and bond length order is  y>x>z  

Related Questions:

Which of the following correct statement about structure of Ortho boric acid (H3BO3 ) is/are? Statements are as

(1) Angle O-B-O =120   

(2) Angle H-O-B >109 

(3) Hybridization of atom O close to spand   

(4) Molecule is non planer and non polar

Answer: Statement (4) is wrong because molecule is planer and polar


Related Questions:

Tuesday, December 22, 2020

What is the structure of Basic beryllium Nitrate (BBN)?

Basic Beryllium nitrate is a Covalent compound and has as unique structure like [Be4O(NO3)], containg six nitrate group. The more interesting structure of Basic Beryllium nitrate because the nitrate group act as indented ligand in forming a bridge  between two Be atoms.