摘要:

AbstractThe photochemistry of fluoro‐substituted aromatic and heteroaromatic molecules is reviewed. Investigations in this field of organic fluorine chemistry are summarized and some recent observations are presented. It is concluded that the fluorine atom is a convenient substituent for the elucidation of the reaction pathways of photochemical transformations of aromatic and heteroaromatic molecule

ISSN:0021-2148    

DOI:10.1002/ijch.197800012

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractSymmetric cleavage of cyclic compounds into identical fission products is introduced as a generally applicable method for synthesis. The usefulness of this approach in the field of fluorine chemistry is discussed and illustrated with representative examples. The scope and limitations of this method are outlined and possible future applications indicated.

ISSN:0021-2148    

DOI:10.1002/ijch.197800013

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractThe synthesis and properties of the novel pentafluorosulfur peroxides, SF5OOH, SF5OOF and SF5OOCl are described. The hydroperoxide obtained by the hydrolysis of SF5OOC(O)F is the parent compound of this series and the halogen derivatives are obtained by reactions with fluorine and chlorine monofluoride. The preparation of SF5OOF results in the formation of another unstable compound, believed to be SF5OOOSF5.The vibrational spectra of SF5OOX and the related SF5OX (X = H,Cl,F) are analyzed in a consistent manner by assigning the most intense Raman band to the symmetric SF4square stretching mode. Previous assignments for pentafluorosulfur peroxides had assigned the most intense band to the O‐O stretc

ISSN:0021-2148    

DOI:10.1002/ijch.197800014

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractRaman spectra are reported for (i) complexes of xenon hexafluoride with the fluoride‐ion acceptors BF3, PdF4, PF5, AsF5, RuF5, PtF5, and AuF5, and (ii) for solutions of xenon hexafluoride in HF and in WF6. Vibrational assignments are made for the cations XeF+5and Xe2F+11, and evoke a normal coordinate analysis for XeF+5. Xenon hexafluoride, present in concentrated solution in HF as [XeF+5F−]4, progressively ionizes on dilution to give Xe2F+11; and XeF+5; on the other hand, in WF6solution [XeF+5F−]4exists in equilibrium only with molecular

ISSN:0021-2148    

DOI:10.1002/ijch.197800015

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractRelatively few non‐metallic ferromagnetic materials are available. The authors give a survey of the ferromagnetic fluorides. Three main groups are considered: rare earth fluorides, layer‐type Cu2+fluorides and LiSbF4‐type comp

ISSN:0021-2148    

DOI:10.1002/ijch.197800016

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractCarbonyl fluoride adds to arylmethanonitriles in the presence of anhydrous hydrogen fluoride and alkali metal fluorides to produce the corresponding aryldifluoromethyl isocyanates. The aryldifluoromethyl isocyanates react with two additional moles of arylmethanonitrile to yield aryltrifluoromethanes and 2‐hydroxy‐4, 6‐diaryl‐s‐triazines. Alkali metal fluorides also enhance this reaction and suppress the formation of 2, 4, 6‐triaryl‐s‐triazines. With electron‐withdrawing substituents on the aromatic ring, the reactions do not yield any significant quantity of the aryltrifluoromethanes, but stop at the aryldifluoromethyl

ISSN:0021-2148    

DOI:10.1002/ijch.197800017

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractHexafluorobenzene reacts with N[Sn(CH3)3]3to give C6F5N[Sn(CH3)3]2. Better yields of this compound were obtained either starting from C6F5NH2and treating this with Li‐butyl and (CH3)3SnCl or reacting C6F5NSO with N[Sn(CH3)3]3. A byproduct of the reaction with C6F5NH2is C6F5NHSn(CH3)3. The cleavage of the tin‐nitrogen bond in C6F5N[Sn(CH3)3]2was achieved with the anhydrides (CF3C(O))2O and (CF3SO2)2O resulting in the following products: C6F5NC(O)CF3Sn(CH3)3, C6F5NSO2CF3Sn(CH3)3and C6F5N(SO2CF3)2. When C6F5N[Sn(CH3)3]2is treated with S3N2Cl2a chain‐like compound of sulfur and nitrogen atoms is obtained (C6F5NSN)2S. The mass and NMR spectra of the new compounds are rep

ISSN:0021-2148    

DOI:10.1002/ijch.197800018

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractNSF (1) reacts with CF3CF=CF2in the presence of CsF to give the known sulfides (CF3)3CF‐S‐S‐CF(CF3)2(3) and (CF3)2CF‐S‐CF(CF3)2(4) and the linear thiazenes (CF3)2C=N‐S‐CF(CF3)2(5), (CF3)2CF‐S‐N=S=N‐CF(CF3)2(6), [(CF3)2CF‐S‐N=]2S (7), and (CF3)2CF‐S‐NSF2(8); (CF3)2CF‐S‐NSO (9) results from the decomposition of (8) with glass. Yields of (3)‐(9) depend on the reaction conditons; an attempt is made to expl

ISSN:0021-2148    

DOI:10.1002/ijch.197800019

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractA series of spirophosphoranes, [C6H4O2][OC(CF3)2C(CF3)2O]‐PR (R = F, Me, Bu1, Ph, and OMe) containing the catechol and perfluoropinacolyl ring system have been prepared. Characterization was by NMR and IR spectroscopy, mass spectrometry, and by elemental analysis. In some cases temperature dependent effects were observed in the19F‐NMR spectra; the findings are rationalized in terms of a “high‐energy” ligand exchange process. Hydrolysis of the phosphorane with R = F may proceed along two different pathways, with formation of phosphoryl

ISSN:0021-2148    

DOI:10.1002/ijch.197800020

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractThe dithioethers CH3SCF2CH2SCH3, CH3SCH(CF3)CH2SCH3, CH3SCH(CF3)CH(CF3)SCH3, CH3SCH(CH3)CH2SCH3, CH3SCH(CH3)CH(CH3), C6F5SCH2‐CH2SC6F5, CF3SCH2CH2SCH3, and C6F5SCH2CH2SCH3have been prepared by photochemical addition to olefines or by metathetical reactions. Physical and some chemical properties are describe

ISSN:0021-2148    

DOI:10.1002/ijch.197800021

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY