(Solved): (b) maintaining the charge at S^(1), but moving the - charge on N^(1) to N^(2), and no other new c ...
(b) maintaining the charge at
S^(1), but moving the - charge on
N^(1)to
N^(2), and no other new charges (c) maintaining the charge at
S^(1)and - charge at
N^(2), but forming a new charge at
N^(3)and a new - charge at
O^(1), and no other new charges (d) maintaining the charge at
N^(3)and - charge at
N^(2), but neutralizing the negative charge at
O^(1)and positive charge at
S^(1), and no other new charges (e) arrows on structure (d) to neutralize the charge at
N^(3)and
N^(2)to arrive back at the original molecule. Each structure should be related to the subsequent one by curved arrows in the starting structure denoting the relevant electron movement to form the following structure. Tips: start with curved arrows in starting structure; sometimes, it helps to work backwards from charges you are aiming to form. (e) curved arrows on resonance structure (d) to revert back to starting structure resonance structure as described in part (d) resonance structure as described in part (c) (20 pts) The molecule illustrated below is a candidate component for next-generation solar cells because charge can be delocalized across many different atoms in different directions. Draw curved arrows representing electron movement to form a sequence of 4 valid resonance structures, each with one of the following characteristics: (a) a + charge at
S^(1)and a - charge at
N^(1), and no other new charges (b) maintaining the + charge at
S^(1), but moving the - charge on
N^(1)to
N^(2), and no other new charges (c) maintaining the + charge at
S^(1)and - charge at
N^(2), but forming a new + charge at
N^(3)and a new - charge at
O^(1), and no other new charges (d) maintaining the + charge at
N^(3)and - charge at
N^(2), but neutralizing the negative charge at
O^(1)and positive charge at
S^(1), and no other new charges (e) arrows on structure (d) to neutralize the charge at
N^(3)and
N^(2)to arrive back at the original molecule. Each structure should be related to the subsequent one by curved arrows in the starting structure denoting the relevant electron movement to form the following structure. Tips: start with curved arrows in starting structure; sometimes, it helps to work backwards from charges you are aiming to form. (e) curved arrows on resonance structure (d) to revert back to starting structure
