Question

Prelab Assignment Prior to the laboratory, complete the following Pre-lab Question(s): 1. Cis and Trans isomers of 1,2-dichlorocyclohexane, 1,3-dichlorocyclohexane and 1,4- dichlorocyclohexane - Draw the perspective, Chair and mirror image (if applicable) of each isomer. Perspective (Wedge dash) Chair conformation Drawing Mirror Image chair Chiral? Cis-1,2-dichlorowyclohexane Trans-1.2-dichlorocyclone Is either isomer a mese compound? If yes, draw the plane of symmetry on the mese compound What is the errochemical relationship between these is transiomer? C-1,3-dichlorocyclohexane Trans-1,3-dichloroceae Is either somer amese compound? If yes, draw the plane of mely on the mese compound What is the rochemical relationship between these in somen! Cial-chlorocoane Is either some me compound? If yes, draw the plane of my on the meno compound What is the Merchemical relationship between these citra mer!

Answer 1

CTS 1/2 dichloro grloherane .cl Charo conformation d 14 -a H chair Mionos frage .cl as a sapidly they cannot be chairal The chais conform of the cas 1,2 dichloro somer is chisal. It exists 50:50 Mixture of Enantiomeric Conformations, which inter convert so cannot be Resolved (le, separated). Since the cis isomer has two centres of Cassymetic Carbons) and is Chisanity is optically inactive, it is a meso compound

trans 12 dichloro chiral cl Thi St ho Crists Non rel Chair Conformations. Po cl Н cis two H. cl In trans CIR, OR) el b b .cl AL нс) cl cl Miroor mage vol o Seumuel cl H al

chiral This has two chiral Carbons, and It has no plane of symmetry. It Crists as a paio of optically active Non super impossible Missos Amage Isomers. Dichoso gebhexane has two charal carbons, but it has an Internal plane of symmetry bisects the C.-C2 and C4-15 bonds. It is a meso Compound, so it is optically Mactive (iS 1,2- that

cf 13 - dehloso cyclohexane tran rel o cl Chair Conformation chiral are identical When the two substituents na Cis 13. Cyclohexane then the Molecule possesses and es achiral a plane of symmetry

trans 13 - dichloso Cyclohexane al chair conformation el H a toans (12,38] cl d 'Cl ते trans (Is, 35) Midodo Images СР с chiral Daire 4 cl ch has toans 1, 3. Dechloro cyclohexane two chiral Carbon atoms and A lacks an internal plane of a

PL es not super imposable on its mirror mage. It exists as a part of Ophically active non-super imposible isomers. moros Image CB 114 dichloro gclohexane 니 chair conformation H ta -al H 21 Chiral It is achisal

trans 1,4. dichlso ey do hoxane o d chais Contor conformation al Н ch Late cl А chiral al This has no chisal Carbons, mactice So it is Pilis ophically