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1、ActivationofHydrogen-andHalogen-BondingInteractionsinTetrathiafulvalene-BasedCrystallineMolecularConductors4.3.RadicalCationSaltsofHalogenatedTetrathiafulvalenes4.3.1.C-Hal...HalanionInteractions4.3.2.C-Hal...O,SanionInteractions4.3.3.C-Hal...NInteractions4.3.4.EvolutionofHalogenBondinginTTFS
2、alts4.4.HalogenBondingInteractionsintheAnionicNetwork5.ConcludingRemarks6.Acknowledgments4.3.RadicalCationSaltsofHalogenatedTetrathiafulvalenesAdistinctionwillbemadeamongthevarioussaltsofhalogenatedtetrathiafulvalenesbetween(i)thoseincorporatinghalogenatedanions(Br-,IBr2-,I3-),whereHal...Hala
3、nioninteractionswereexpected,and(ii)thoseincorporatingotherheteroatomsasLewisbasesforHal...Binteractions,essentiallyorganicandinorganicnitrileswhereHal...N≡Cinteractionswereanticipated.4.3.1.C-Hal...HalanionInteractionsCrystalsofneutral,chlorinatedtetrathiafulvalenesexhibitatbestclose-packedC
4、l...Clinteractions.Becauseofthestrongelectronegativecharacterofthechlorineatom,Cl-substitutedTTFsoxidizeathigherpotentialsthanthebromooriododerivatives151andtheirradicalcationsaltshavenotbeeninvestigatedtoanyextent.A2:1saltofEDT-TTFCl2hasbeenobtainedbychemicaloxidationwiththestrongTCNQF4oxida
5、nt,152whileelectrocrystallizationexperimentsaffordeda1:1saltwithClO4-,(EDT-TTFCl2)-(ClO4),andwithEDO-TTFCl2and(n-Bu4NPF6),a2:1saltformulatedas(EDO-TTFCl2)2(PF6)wasobtained.153ShorttypeICl...Clcontactswereonlyobservedin(EDT-TTFCl2)2(TCNQF4)withCl...Cl=3.42Åandθ1=θ2=126°.Notealsothatashortertyp
6、eIcontact(3.38Å,θ1=θ2=146°)wasobservedinneutralEDO-TTFCl2.145Ontheotherhand,severalsaltsofo-dibromotetrathiafulvalenederivativeshavebeensynthesized,essentiallywithinorganicpolyhalidessuchasI3-orIBr2-withtheobjectivetopromotecation...anion,Br...Br,orBr...Iinteractions.Andindeed,suchinteraction
7、shavebeenclearlyobservedwhiletheywereessentiallyabsentintheneutraldonormolecules.Forexample,inthe1:1[o-TTF(SMe)2Br2]-I3saltshownin4.3,140,148theshortestBr…I(3.63Å,θ1=72°,θ2=164°)contactinvolvestheterminaliodineatomofI3-(d1in4.3).TheI3-anionth