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The synthesis of cationic cyclopentadienyliron-containing polymers with pendent azobenzene chromophores was accomplished via metal-mediated nucleophilic aromatic substitution reactions. All of the desired polymers were isolated as vibrantly coloured materials and displayed excellent solubility in po...
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Electrolysis of arene and heterocycle cyclopentadienyliron hexafluorophosphates led to the liberation of arenes or heterocycles in 69-90% yield. The procedure described gives yields comparable with or superior to the yields obtained from pyrolytic sublimation used previously.
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A no. of routes to the synthesis of dendrimeric materials coordinated to the cationic cyclopentadienyliron moiety were explored. As an example, reaction of dichloroarene cyclopentadienyliron complexes with a triphenolic compd. resulted in the formation of a trimetallic ether complex contg. terminal ...
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Polyarom. ether/imines with pendent cationic cyclopentadienyliron moieties were prepd. using two different synthetic strategies. The first methodol. involved the reaction of diiron complexes contg. terminal complexed chloroarenes with diphenolic compds. In this strategy, the imine functionality was ...
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The aim of the present study is to det. the activities of three kinds of antibiotics against Staphylococcal biofilm and planktonic cultures in vitro, and to indicate the enhancement of biofilm formation in response to stress factors such as glucose and sub-inhibitory concns. of antibiotics by using ...
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Cyclic aryl ethers, thioethers or amines, and methods for synthesis are
disclosed. These cyclic aryl compounds are synthesized by combining a first
dinucleophile with a substituted benzene metallized electron-withdrawing
complex,
having halo or nitro substituent groups, to form a li...
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A review presents the redox properties and redox-based functionalities of multi-nuclear metal complex systems such as conjugated linear polymers of oligo- and polyferrocenylene derivs. and organometallic π-conjugated conducting polymers made of metallacyles. [on SciFinder(R)]
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The versatility of cationic cyclopentadienyliron complexes is demonstrated for the generation of calix[4]arene-based dendrimers and polymers. Dendrimers were prepared from a branched organoiron calix[4]arene through subsequent reactions of azo dyes and organoiron complexes. The resulting azo dye-con...
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The topic of metal-contg. polymers is reviewed with special emphasis on the need for polymeric materials for the 21st century and the role that metal and metalloid-contg. polymers will fill. Also emphasized is the wide variety of potential polymers including varying the metal, oxidn. state of the me...
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The synthesis of arom. ether functionalized norbornene monomers was accomplished using chloroarene cyclopentadienyliron complexes. Monomers contg. aliph. ether linkages or bulky arom. ether groups within their structures were synthesized. These monomers were subjected to ring-opening metathesis poly...
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Organoiron polymers are one of the most well-examined classes of metal-containing polymers in light of their diverse structures, properties and applications. In this review, organoiron polymers are classified according to their structural make-up. The synthesis and characterization of oligomers and ...
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A number of benzothiazole derivatives of 2-aminopyrimidines (3a-b, 5, 6a-b, and 7), benzothiazole-3-arylacrylonitriles (10a-c), and benzothiazol-2-yl-coumarins (18a c, and 20) were synthesized by reacting benzothiazole derivatives with dicarbonyl compounds, and aromatic aldehydes. The unexpected 2-(...
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This communication is focused on the controlled design of star-shaped aromatic ethers with pendent cyclopentadienyliron moieties. A trimetallic core was prepared, which was then reacted with a number of oligomeric ether complexes to give star-shaped polymers with six, nine, twelve and fifteen penden...
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The effects of simple salts, surfactant concn., temp., aging, pH, a nonanionic surfactant (Triton X-100), the presence of a hydrocarbon phase (n-decane) on the flow curves of an anionic surfactant, a triethylene glycol C12-15 monoether sulfate sodium salt (Neodol 25-3S) are studied. [on SciFinder(R)...
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Text of the speech given by Dr. Abd-El-Aziz on the occasion of his installation as the sixth President and Vice-Chancellor of the University of Prince Edward Island.
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The molecular weight, thermal stability, and conductivity of chemically synthesized, self-doped poly(anilineboronic acid) have been determined. Gel permeation chromatography results indicate a number-average molecular weight of 1 676 000 g mol-1, a weight-average molecular weight of 1 760 00...
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(2) C~H1802, Mr=182"3, monoclinic, P21/a, a = 7.463 (3), b = 9.776 (3), c = 14-955 (5) A, fl = 97.33 °, V = 1082-2 A 3, Z = 4, Dx = 1.12 gcm -3, a(Mo Ka) = 0.71073/~, ~ = 0.70 cm-i, F(000) = 400, room temperature, R = 0.041 for 480 observed reflections. (5) CI3H2202, Mr = 210-3, orthorhombic, Pnab,...
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Treatment of CuI with the flexible PhS(CH(2))(4)SPh dithioether ligand in MeCN solution affords the strongly luminescent metal-organic 2D coordination polymer [Cu(4)I(4){mu-PhS(CH(2))(4)SPh}(2)](n) (). The interpenetrated 2D network of is built upon by Cu(4)(mu(3)-I)(4) cubane-like clusters as secon...
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A number of synthetic routes have been utilized in the production of organometallic monomers and polymers containing arenes coordinated to the Group VI, VII and VIII transition metals. Transition metal-coordinated monomers were prepared either by nucleophilic aromatic substitution reactions of trans...
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A new development in the chemistry of arenes activated toward SNAr reactions by the cyclopentadienyliron (FeCp+) moiety is presented in this work. A class of diiron complexes of diphenoxybenzenes was prepared in a highly efficient and very mild fashion. Dihydroxy aromatic compounds served as dinucle...
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Displacement of the terminal chloro groups of the diiron arene complexes with 1-naphthol led to the formation of the corresponding complex with terminal naphthoxy groups. Photolytic demetallation of these complexes produced the monomeric blocks in good yields. Scholl polymn. was implemented leading ...
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Ferrocene-based polymers contg. azo groups in their backbone were synthesized by condensation polymn. of a cationic organometallic monomer contg. two azo dye moieties and ferrocene in the backbone as well as pendent cationic iron groups with 1,3-diaminopropane, 4,4'-thiobisbenzenethiol or bisphenol ...