请点击:"在新窗口中查看"即可看到整个表格Table of Chemical Shift RangesType of Compound | |
Chemical Shift Range (ppm) Relative to neat CFCl3 |
---|
-F-C=O | -70 to -20 | -CF3- | +40 to +80 | -CF2- | +80 to +140 | -CF- | +140 to +250 | -ArF- | +80 to +170 | Chemical Shift Table For certain compounds, the listed chemical shift pertains to the F shown in bold. The primary references for these values are: 1) the 1991 Bruker Almanac, and 2) Compilation of reported F19 NMR chemical shifts, 1951 to mid-1967 by Claude H. Dungan and John R. Van Wazer. Negative shifts are those that appear upfield of CFCl3 and positive shifts are those that appear downfield.
Compound | Chemical Shift (ppm) Relative to neat CFCl3 |
---|
CFCl3 | 0.00 | MeF | -271.9 | CF3H (in CFCl3) | -78.6 | CF3H (in EtO) | -78.6 | CF2H2 | -143.6 | EtF | -213 | FCH=CH2 | -114 | F2C=CH2 | -81.3 | F2C=CF2 | -135 | CF3COOH (in CFCl3) | -76.55 | CF3COOH (neat) | -78.5 | CF3COOH (in CCl4 | -76.3 | CF3COOC6H6 | -73.85 | CF3COOCH2C6H6 | -75.02 | CF3COOCH3 | -74.21 | CF3COOEt (neat) | -78.7 | CF3COO(CH2)n | -74 to -75 | C6F6 | -164.9 | C6H5F | -113.5 | p-FC6H4F | -106.0 | CFH2Ph | -207 | C6H5CF3 | -63.72 | C4F8 | -135.15 | C5F10 | -132.9 | CF3R | -60 to -70 | CHF2OR | ~-82 | (CF3)2CO | -84.6 | CH2CN | -251 | F2 | +422.92 | CF3Cl | -28.6 | ClF3 | +116, -4 | ClF5 | +247,+412 | CF2Cl2 | -8 | CFCl2CFCl2 | -67.8 | CFBr3 | +7.38 | CF2Br2 | +7 | IF4F(equatorial) | +58.9 | IF7 | +170 | AsF3 | -40.6 | AsF5 | -66 | [AsF6]-1 | -69.5 | BF3 | -131.3 | (CH3)2O.BF3 | -158.3 | (C2H5)2O.BF3 | -153 | [BeF4]-1 | -163 | MoF6 | -278 | ReF7 | +345 | SF6 | +57.42 | SO2F | -78.5 | S2O5F2 | +47.2 | SbF5 | -108 | [SbF6]-1 | -109 | SeF6 | +55 | (C2H5)2SiF2 | -143.0 | SiF4 | -163.3 | [SiF6]-2 | -127 | TeF6 | -57 | WF6 | +166 | XeF2 | +258 | XeF4 | +438 | XeF6 | +550 | NF3 | 147 | SOF2 | 75.68 | C6H5SO2F (dilute) | 65.464 | C6H5SO2F (20% conc) | 65.514 | SF6 (dilute) | 57.617 | SF6 (10% conc | 57.42 | SO2F2 | 33.17 | CBr3F (dilute) | 7.388 | CBr3F (80% conc) | 7.043 | CCl2F2 | -6.848 | CClF3 | -28.1 | PF3 | -34.0 | (CF3)3N (dilute) | -55.969 | (CF3)3N (30% conc) | -55.969 | CF3CF2CF2I | -60.470 | CF4 | -62.3 | C6H5CF3 (dilute) | -63.732 | C6H5CF3 (40% conc) | -63.370 | PF5 | -71.5 | CCl2F.CCl2F (dilute) | -67.775 | CCl2F.CCl2F (20% conc) | -67.834 | (CF3)3CF | -74.625 | CF3CO2H (dilute) | -76.530 | CF3CO2H (20% conc) | -76.542 | CF3(CF2)5CF3 | -81.60 | CF3(CF2)2CF3 | -81.85 | [CF3CF2CF2]N | -85.19 | POF3 | -90.7 | CF3CF2CF2CF2CN | -107.1 | CF3CF2CF2CF2CN | -105.764 |
Homonuclear CouplingsListed Coupling constant values pertain to Fs shown in bold.
Compound | Coupling Constant (Hz) |
---|
(CF3CF2)2NCF3 | 10.2 | (CF3CF2)2NCF3 | 15.18 | (CF3CF2)2NCF3 | 6.8 | [CF3CF2]3N | 13.6 | CF3CF2N[CF3]2 | <1 | CF3CF2N[CF3]2 | 16 | CF3CF2N[CF3]2 | 6 | (CF3CF2)2O | 3.4 | (CF3]3CF | 1.4 | CF3CF2H | 2.8 | CF3CFH2 | 15.5 | CF3CF2CHF2 | 4.5 | CF3CF2CHF2 | 7.3 | CF3CF2CH2F | 15.2 | CF3CF2CH2F | 7.9 | CF2Cl.CF2.CH2F | 15.1 | CF2Cl.CF2.CH2F | 7.7 | CF2Cl.CF2.CH2F | 3.9 | CF2Br.CF2.CH2F | 15.5 | CF2Br.CF2.CH2F | 7.7 | CF2Br.CF2.CH2F | 3.9 | CFFBr.CHFBr | 21 | CFFBr.CHFBr | 24 | CFFBr.CHFBr | 174 | CFFBr.CHFCl | 18 | CFFBr.CHFCl | 18 | CFFBr.CHFCl | 177 | CFFBr.CFClBr | 13 | CFFBr.CFClBr | 14 | CFFBr.CFClBr | 159 | CFF(SiCl3).CFClBr | 16.8 | CFF(SiCl3).CFClBr | 16.8 | CFF(SiCl3).CFClBr | 343 | CF3.CFF.CFICl | 270.4 | CFF=CFCl | 76 | CFF=CFCl (cis) | 56 | CFF=CFCl (trans) | 116 | CFCl=CFCl (cis) | 37.5 | CFCl=CFCl (trans) | 129.57 | CFF=CFCF3 | 57 | CFF=CFCF3 (cis) | 39 | CFF=CFCF3 (trans) | 116 | CFF=CFCF3 (trans) | 8 | CFF=CFCF3 (cis) | 22 | CFF=CFCF3 | 13 | (cyclopropane) CH2.CFF.CHCH3 | 157 | (cyclobutane) CH2.CFF.CCl2.CCl2 | 187 | (cyclobutene) CFF.CH(C2H5).CCl2=CCl | 192 | (cyclobutane) CFF.CFF.CH2.CHCClH2 | 230 | (cyclobutane) CFF.CFF.CH2.CHCClH2 | 240 | (cyclohexane) CFH.CFH.CFH.CFH.CFH.CFF | 284 |
|