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C, N and N, C, N-chelated Organotin (IV) Fluorides
Year: 2007
Type of publication: kapitola v odborné knize
Name of source: Fluorine Chemistry Research Advances
Publisher name: Nova Science Publishers
Place: NY, USA
Page from-to: 281-312
Titles:
Language Name Abstract Keywords
cze C, N and N, C, N-chelated Organotin (IV) Fluorides One of the goals in the chemistry of tri-, di-, and monoorganotin(IV) compounds is to prepare and characterize structurally monomeric organotin fluorides, which are of great interest due to their ability to undergo the metathetical halide for fluoride exchange reactions with different kinds of organic, inorganic or organometallic halides. For these purposes, organotin systems containing C,N-chelating or N,C,N-chelating ligands were selected. During the last five years, a set of compounds was prepared and structurally characterized. C,N-chelated triorganotin compounds bearing the LCN ligand, where LCN is {2-[(CH3)2NCH2]C6H4}- , reveal the monomeric structure in solution as well as in the solid state with pentacoordinated tin atom and the longest Sn-F distances due to the trans effect of the lone electron pair of nitrogen. Di-, and monoorganotin(IV) fluorides having either the monomeric and oligomeric structure with hexacoordinated tin atoms and both terminal and bridging fluorine atoms. The N,C,N-chelated compounds bearing the LNCN ligand, where LNCN is {2,6-[(CH3)2NCH2]2C6H3}- , reveal the monomeric and oligomeric structure both in neutral or ionic form (stannates). In the case of N,C,N-chelated triorganotin compounds the formation of ?naked? fluorine ion was observed in NMR spectra. These compounds were used as mild fluorinating agents in fluorination of organic, inorganic (metal halides, phosphines, silanes, etc.) and organometallic species as well as the F ion selective carriers with low detection limits.
eng C, N and N, C, N-chelated Organotin (IV) Fluorides One of the goals in the chemistry of tri-, di-, and monoorganotin(IV) compounds is to prepare and characterize structurally monomeric organotin fluorides, which are of great interest due to their ability to undergo the metathetical halide for fluoride exchange reactions with different kinds of organic, inorganic or organometallic halides. For these purposes, organotin systems containing C,N-chelating or N,C,N-chelating ligands were selected. During the last five years, a set of compounds was prepared and structurally characterized. C,N-chelated triorganotin compounds bearing the LCN ligand, where LCN is {2-[(CH3)2NCH2]C6H4}- , reveal the monomeric structure in solution as well as in the solid state with pentacoordinated tin atom and the longest Sn-F distances due to the trans effect of the lone electron pair of nitrogen. Di-, and monoorganotin(IV) fluorides having either the monomeric and oligomeric structure with hexacoordinated tin atoms and both terminal and bridging fluorine atoms. The N,C,N-chelated compounds bearing the LNCN ligand, where LNCN is {2,6-[(CH3)2NCH2]2C6H3}- , reveal the monomeric and oligomeric structure both in neutral or ionic form (stannates). In the case of N,C,N-chelated triorganotin compounds the formation of ?naked? fluorine ion was observed in NMR spectra. These compounds were used as mild fluorinating agents in fluorination of organic, inorganic (metal halides, phosphines, silanes, etc.) and organometallic species as well as the F ion selective carriers with low detection limits. tin, fluorine

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