氟谱F化学位移及偶合英语四六级考试成绩查询
常数
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19FChemicalShiftsandCouplingConstants Ifyouhavemeasureda19Fchemicalshiftand/orcouplingconstantthatdoe snotappearinthetablesbelow,andyouwouldlikeyourmeasurementtobein cludedhere,contactthe.
TableofChemical Shift Ranges
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ChemicalShiftTable
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Forcertaincompounds,thelistedchemicalshiftpertainstothe F shownin bold.Theprimaryreferencesforthevaluesare:
1)the1991BrukerAlmanac,and
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hurryup是什么意思2)CompilationofreportedF19NMRchemicalshifts,1951tomid-
1967byClaudeH.DunganandJohnR.VanWazer. NegativeshiftsarethothatappearupfieldofCFCl3andpositiveshifts arethothatappeardownfield.
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自考英语
HomonuclearCouplings ListedCouplingconstantvaluespertainto F sshownin bold.
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