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Dolbier HW Solutions 577

Dolbier HW Solutions 577 - 671 ARYL HALIDES 23.28...

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23.28 Polychlorinated biphenyls (PCBs) are derived from biphenyl as the base structure. It is numbered as shown. ( a ) There are three monochloro derivatives of biphenyl: ( b ) The two chlorine substituents may be in the same ring (six isomers): The two chlorine substituents may be in different rings (six isomers): There are therefore a total of 12 isomeric dichlorobiphenyls. 3,4 9 -Dichlorobiphenyl Cl Cl Cl Cl 4,4 9 -Dichlorobiphenyl Cl Cl 3,3 9 -Dichlorobiphenyl
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