CH 221 Homework Resonance

CH 221 Homework Resonance - CH 221 College of the Holy...

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Unformatted text preview: CH 221 College of the Holy Cross Prof. G. Edwards Organic Chemistry I Practice Problems Jan. 29, 2004 Resonance 1. Write as many non-trivial resonance structures as possible for each of the following ions and write the resonance hybrid. H a) H\ ‘ (‘9 I C:C—~C~Q-H H/ \ r H H b) H H H He~ 1 1 1 GB C,‘—=C’C:Q~C~H H/ ' a H H s C) H\C: ’C'H l/ l 3(1) H-«(}~H H d) H /H (W‘HXQH l3 THE VASES: $TR‘6KE?3 H—‘C~C'»C- =C\ x H 1 \ H H 30: H H l}; :?~H«,§«§ RATE THE Qfifim-SMW—E H~C~éf \H ACCORDIMQTTQ STRBKWY- l H H <9 H P M r, \ i Q ,. C a:ka RATE TH: RmSQNRmQt SSTRQQTQKMQQ H'? H Ci H \ ACQQQDHQQ T0 STAfi‘HuTY. H 30: H 2C): H HV’ » ‘6“).- CleCH (3:3; . s: | ~ w N’QJ: r; H ~S>0Hmmxw STR‘QQXQRm \35 Th: H/ h :4 A Man STHE‘LE?§ H\ /H C:C\® H\ / C'H C / {4/ NC: C\ l H Hat—H 2. Write one decent resonance structure for each of the following neutral molecules. 8) “ H H-‘c—~C:C’N/ \ l l \H H H [-1 H b) ‘ '/H H-Q»C*N \ H \H H -.O.- H C) l 4' W???” H...C>; I H d) ‘3 .. x H HrC‘CfiO_C‘I-C‘-’ ‘\ I) l L] O .‘O: H :b—é’” e) \C H H”: C"H \ ll \ ...
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This note was uploaded on 04/07/2008 for the course CHEM 221 taught by Professor Edwards during the Spring '08 term at Holy Cross (MA).

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CH 221 Homework Resonance - CH 221 College of the Holy...

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