Organic chemistry an acid base approach

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2-(N-methylamino)-3,4-diethyldecaneNH Me

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Tiêu đề:	N-

5.30Cl Br Cl bromotrichloromethane ClThere are 3 C-Cl dipoles in the“direction” of the tetrahedral “base.”The C-Br dipole is in the opposite direction and diminishes the net dipole due to the chlorine atoms, but the direction remains that shown

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Tiêu đề:	direction” of the tetrahedral “base

5.48. Cyclohexadiene.is.not.resonance.stabilized..There.are. π -electrons,.but.there.is.not.a.continuous.array.and.it.is.not.possible.for.one.“end”.of.the.π-system.to.interact.(delocalize.electrons).to.the.other.“end.”

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Tiêu đề:	end”.of.the.π-system.to.interact.(delocalize.electrons).to.the.other.“end

5.1. The.hybridization.of.O.in.the.C=O.unit.is.sp 2 .because.it.is.one.part.of.an.array.of.two.atoms.connected.by.a.π-bond

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5.3. Because.the.geometry.about.a. π -bond.is.trigonal.planar,.we.expect.that.R 2 C = O.will.be.a.planar.molecule.with.both.R.groups,.the.C,.and.the.O.all.in.one.plane.and.the.π-bond.perpendicular.to.that.plane

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5.9. A.molecule.with.two. π -bonds.and.a.formula.C 12 H 22 .that.is.not.an.alkyne.prob- ably.contain.two.alkene.units.(C=C)..All.that.is.necessary.is.that.two.π-bonds.be.present..Such.a.molecule.is.called.a.diene.(see.Chapter.3).5.10

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5-chloro-3,3,6-trimethyl-oct-1-eneMeCl MeMe I

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6,6-diethyl-9-iododec-3-yne5.124-ethylcyclododecyne

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1,3-cyclopentadiene 3-ethyl-1,5-hexadiene 6-bromo-1,3-hexadiyne5.14

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5.15. 4-(2-Methylpentyl)-non-7-en-2-yne

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5.17. Oxygen.is.6.–.ẵ(2).–.6.=.–1..Carbon.and.all.H.=.O 1 .so.the.format.change.is.–1.for.the.molecule

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5.18. For.bromomethane,.CH 3 Br,.the.formal.charge.for.C.is.C. = .4.–.1/2(8).–.0. = .0;.for.Br,.Br.=.7.–.1/2(2).–.6.=.0..Therefore,.the.formal.charge.for.this.molecule.is.0

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5.19. For.CH 3 NH 2 ,.the.formal.charge.is.C. = .4.–.1/2(8).–.0. = .0;.for.all.five.H,.H. = .1.–

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1/2(2).–.0.=.0;.and.for.N,.N.=.5.–.1/2(6).–.2.=.0..Therefore,.the.formal.charge.for.this.molecule.is.0

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5.20. The.formal.charge.for.O.in.ethanol.is.O. = .6.–.1/2(4).–.4. = .0.5.21NH 2 N NH CH 3

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5.23. CH 3 NH 2 ,.CH 3 CH 2 NH 2 ,.CH 3 CH 2 CH 2 CH 2 CH 2 NH 2

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5.28R Cl Hfor Cl = 7 – (0.5)4) – 4 = +1CH 2 CH 2 –Hfor C = 4 – (0.5)6) – 0 = +1C CHH HH H

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5.32. The.10.C.atoms.found.in.decanol.will.more.than.balance.the.one.OH.unit,.so.this.molecule.will.be.relatively.polar–polar..Therefore,.it.should.be.miscible.with.hexane.and.relatively.soluble.in.water

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5.36. For.3-pentanone,.the.formal.charge.for.the.carbonyl.C.is.C. = .4.–.1/2(8).–.0. = .0;.for.O,.O.=.6.–.1/2(4).–.4.=.0..Therefore,.the.formal.charge.for.this.molecule.is.0

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5.39O H Me Me MeMeCl 2,2,4,4-tetramethyl-5-(2-chloro-1-propyl)-decanal

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Tiêu đề	Organic Chemistry An Acid–Base Approach
Tác giả	Michael B. Smith
Trường học	CRC Press
Chuyên ngành	Organic Chemistry
Thể loại	book
Năm xuất bản	2011
Thành phố	Boca Raton

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Số trang	1.500
Dung lượng	26,29 MB