Chapter 4 Multiple Choice Questions

1. Select from a-d every statement about supramolecular self-assembly which is correct.

2. Predict the shape of the supramolecular assembly formed by the metal-directed self-assembly of the following Pd(II) complex and bis-pyridyl ligand when they are mixed in a 1:1 stoichiometric ratio.

A chemical reaction shows C 2 N 2 P d (2) ring, where both N are fused with H 2 and P d is single-bonded with two O N O 2, plus C 5 N ring single bond C 4 N attached with C 6 having two common C atoms attached with C 4 N single bond C 5 N. The neighboring C atoms of N in C 4 N are double bonded with an O atom, in turn. The equation is equivalent to a question mark.

3. Which one of the following statements correctly describes the 109Ag NMR spectrum for the ladder assembly shown below?
A chemical structure for 109 A g N M R spectrum shows two C 4 N 2 rings and two C 2 N 2 C u (1) rings are attached, and each C u (1) is a member of the attached rings of C 5 N, C 2 N 2 C u (1), and C 5 N. Each C 4 N 2 is single-bonded with two P h. This structure is repeated five times through single bonds with 10 cations.

4. The cis (Z) isomer of an azobenzene building block shown below can undergo self-assembly.
A chemical reaction shows C O 2 H single bond C 6 ring single bond N double-bond N single bond C 6 ring single bond C O 2 H, where C 6 ring is also single bonded with an R group. It is equivalent to a question mark. R equals alkyl.
From the following statements a-d, select those that are correct.

5. Which solvents would you expect to promote the self-assembly of the aromatic building block perylene diimide into polymeric columnar stacks?
A chemical structure shows a central C 6 ring is attached with four C 6 rings, where two C 5 N rings are attached on the left and right, respectively. N is single-bonded with R equals solubilising group, and neighboring C atoms of N are double bonded with an O atom, in turn. Below an atomic building block, whose middle part is electron rich and left-right sides are electron poor, under self-assembly gives five steps of the polymeric columnar stack.

6. Which of the molecules A-D will form the strongest hydrogen bond array with molecule La?

A chemical reaction shows L sub a equals C 6 ring attached with C 3 N 2 ring attached with C 2 N 3 ring attached with C 2 N 3 ring attached with C 3 N 2 ring attached with C 6 ring plus A. R C O N H single bond C 5 N ring attached with C 5 N ring single bond N H C O R, B. R C O N H single bond C 5 N ring single bond N H C O R, C. R single bond C 6 ring attached with four consecutive C 5 N rings attached with C 6 ring single bond R, D. R single bond N H C O single bond N H single bond C 4 N 2 ring, where one N is fused with H and its neighboring C atom is single-bonded with C H 3 and the neighboring C atom of the other N is double boned with an O atom.(A) A chemical structure shows R C O N H single bond C 5 N ring attached with C 5 N ring single bond N H C O R.(B) A chemical structure shows R C O N H single bond C 5 N ring single bond N H C O R.(C) A chemical structure shows R single bond C 6 ring attached with four consecutive C 5 N rings attached with C 6 ring single bond R.(D) A chemical structure shows R single bond N H C O single bond N H single bond C 4 N 2 ring, where one N is fused with H and its neighboring C atom is single-bonded with C H 3 and the neighboring C atom of the other N is double boned with an O atom.

7. How many different M2L4 cage compounds, including structural isomers, are possible from the self-assembly of ligands Lb and Lc and Pd(II) complex M?

A chemical reaction shows C 5 N ring single bond C triple-bond C single bond C 6 ring single bond C triple-bond C single bond C 5 N ring, where C 6 ring is single-bonded with an R group, under M equals P d (2) is equivalent to M 2 L 4 cage, where L sub b: R equals H, L sub C: R equals C H 3.

8. Select from a-d every statement about self-assembly driven by the hydrophobic effect which is correct.

9. Consider the DNA and RNA nucleotide bases shown below.

A chemical structure of Adenine (A) shows C 3 N 2 ring attached with C 4 N 2 ring having two common C atoms, where the lower N atom of the C 3 N 2 ring is fused with an H atom. The upper C atom of the C 4 N 2 ring is single-bonded with N H 2.[HTML]<br/><br/>A chemical structure of Guanine (G) shows C 3 N 2 ring attached with C 4 N 2 ring having two common C atoms, where the lower N atom of the C 3 N 2 ring is fused with an H atom. The upper C atom of the C 4 N 2 ring is double bonded with an O atom, and the C atom between the N atoms is single-bonded with N H 2.<br/><br/>A chemical structure of Cytosine (C) shows a C 4 N 2 ring, where the C atom between the two N atoms is double-bonded with an O atom. The left N atom is fused with an H atom and the neighboring C atom of the right N atom is single-bonded with N H 2.<br/><br/>A chemical structure of Thymine (T) shows a C 4 N 2 ring, where the C atom between the two N atoms is double-bonded with an O atom. Both N atoms are fused with an H atom, in turn, and the neighboring C atom of the right N atom is double-bonded with an O atom. The opposite C atom of C O is single-bonded with C H 3.<br/><br/>A chemical structure of Uracil (U) shows a C 4 N 2 ring, where the C atom between the two N atoms is double-bonded with an O atom. Both N atoms are fused with an H atom, in turn, and the right neighboring C atom of the upper N atom is double-bonded with an O atom.Which of the following pairings will have the most hydrogen bonds between the nucleotide bases?

10. Consider the example of anion self-assembly in water below and select from a-d every statement which is correct.

A chemical reaction shows anion self-assembly under water and C r is equivalent to foldamer.

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