Ferrocene derivatives Subject

Moreover, vinyl-bridged Pc adducts with ferrocene derivatives have been described [78,79], Upon reaction of 3,4-dicyanobenzylphosphonate with formylfer-rocene under Wittig-Horner conditions with the corresponding ferrocene-containing mono- or bisphthalonitriles have been obtained, which were then subjected to statistical cyclotetramerization with 4-tert-butylphthalonitrile in the presence of the appropriate metal salt. Furthermore, a double bond has also been employed as spacer between the Pc and ruthenium(trisbipyridine) [47],... 

A significant number of sandwich compounds of this general type are now known, although the subject will not be expounded upon here. In particular, it has proven feasible to construct such molecules from preexisting ferrocene derivatives. Alternatively, the pentalenyl dianion has been reported to react with FeCl2, CoCl2, and NiCl2 with direct formation of pentalene complexes.2S5,256)... 

The subject of host-guest binding interactions between water-soluble ferrocene derivatives and CD hosts constitutes a long-standing topic of research interest in our group [26,27], Therefore, the preparation of dendrimers containing multiple... 

Ferrocene derivatives have been the subject of current interest due to their potential uses as chiral ligands in organic synthesis and as useful materials ... 

Other donors very often used in combination with fullerenes comprise ferrocene, phthalocyanine, transition metal complexes, aniline derivatives, tetrathiafulvalene and oligoacenes, carotenoids, oligoarylene, and oligothiophene and many examples are collected in recent reviews and books dedicated to this subject.3a,7e 28... 

The Mannich bases subjected to the replacement reaction arc usually derivatives of alkyl ketones, phenols, and ferrocene. 

A particular feature of the mesogens of group 8 elements is the extensive liquid-crystal chemistry of ferrocene and its derivatives, and as such this subject is given its own subsection below. 

Since this topic is somewhat removed from the subject matter of this chapter, we shall restrict ourselves to giving some important references for further study. Alkyl- and arylferrocenes have been investigated by infrared spectroscopy (75-81), as well as acetyl derivatives (75, 79) or more generally ferrocene-ketones (76, 82, 83). While unsubstituted (CsH5)2Fe can be protonated at the metal (72), some ferrocene-ketones show protonation at the C=0 groups (84). Bridged ferrocenes also have been extensively studied (82,85-87). The relation between vch and the degree of substitution has been pointed out for polysubstituted ferrocenes (88). 

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