11 research outputs found

    Terrorismus als mediales Ereignis

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    Der moderne Terrorismus, wie wir ihn heute kennen, ist bedauerlicherweise zu einem weltweit verbreiteten Problem geworden, das sich zusehends vermehrt. Gereift zu einer brauchbaren Methode, Krieg zu führen, kann Terrorismus darüber hinaus jede Menge Erfolge verzeichnen. Ein essentieller Bestandteil dieses Erfolges sind die hoch technologisierten Massenmedien, die mit ihrer Berichterstattung des globalen Terrorismus diesem bedeutend in die Hände spielen. Dieses vielerorts bereits als symbiotisch bezeichnetes Verhältnis zwischen Medien und Terrorismus ist dabei nicht nur einseitig vom Terrorismus ausgehend, auch die Medien selbst können daraus zunehmend Profit ziehen und gelangen ihrerseits in gewisser Weise in eine Art Abhängigkeit. Die Symbiose der Beiden hat allerdings vor allem für das Kalkül der Terroristen entscheidende Auswirkungen, welche die „Marketingstrategen“ von Terrororganisationen, wie etwa al-Qaida, geschickt für ihre Zwecke zu nutzen vermögen. Mit den technologischen Möglichkeiten der Telekommunikation können allen voran einschlägige Bilder und Videos via Fernsehen oder Internet für eine breitenwirksame Aufmerksamkeit auf die von den Terroristen propagierten Botschaften und Anliegen sorgen.Modern Terrorism, as we know it today, has regrettably become a worlwide spreaded problem, which visibly increases. Grown to a useful method to wage war, terrorism is furthermore able to achieve lots of succesful outcome. Essential element of this succes are highly technologized massmedia, whose reporting plays an important rule for global terrorism. This in many places already called a symbiotic relation between the media and terrorism is thereby not singulary based on the interests of terrorism, also the media itself can pull out profit and get into a kind of dependence on its part in a way. The symbiosis of both is however mainly important for the intentions of the terrorists and the impact of a terrorist attack, which the “marketingstrategists” of terrororganisations, like al-Qaida for example, are able to cleverly take advantage from. Using the technological possibilities of telecommunication and the massmedia, primarily appropriate fotographes and videoclips can get extanded attention via Television or Internet in order to publicize the messages and concerns propagated through terrorists

    A Joint Experimental and Computational Study on the Electronic Communication in Diethynylaryl-Bridged (η5-C5H5)Fe(η2-dppe) and (η5-C5H5)Fe(CO)2 Units

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    A family of bimetallic complexes [Cp(CO)2FeCCArCCFe(CO)2Cp] {Cp= C5H5; 6a-g, Ar= C4H2S (a); 3-(C4H9)-C4HS (b); 3-(C16H33)-C4HS (c); C6H4 (d); 2,5-bis(OC4H9)-C6H2 (e); 2,5-bis(OC8H17)-C6H2 (f); (C6H4)2 (g)} was prepared by the three-step Pd-catalysed Extended-One-Pot (EOP) synthetic protocol from Bu3SnCCH, XArX (X=I,Br) and Cp(CO)2FeI. Complexes 6a,d,g were then exposed to ultraviolet irradiation in presence of an equivalent amount of 1,2-bis(diphenylphosphyne)ethane (dppe) to form the corresponding bimetallic complexes [Cp(dppe)FeCCArCCFe(dppe)Cp] (7a,d,g). Compounds 6a-g and 7a,d,g were characterised by Ciclic Voltammetry (CV). The most significant electrochemical information comes from the oxidation of the dppe derivatives. The E° separations between the subsequent reversible waves suggest that the efficiency of the metal-metal electronic coupling decreases in the order 6a > 6d > 6g. Complexes 7a and 7g were also chemically oxidised with [Fe(Cp*)]2[BF4] {Cp*= C5(CH3)5} and [Fe(Cp)]2[BF4] respectively, and the Near Infrared (NIR) spectra of the mixed valence species 7a+ and 7g+ were recorded. A strong Charge Transfer band (ICT) was observed only for the radical cation 7a+. While this finding confirms the existence of electronic interaction between the two termini when a 2,5-thiophene group is present in the spacer, the NIR spectrum of 7g+ reveals a reduced efficiency in conveying electrons when the C4H2S moiety is replaced by a 4,4'-biphenyl. In order to rationalise and quantify the extent of electronic communication, ruled by geometrical and electronic factors, Density Functional computational results on selected [Cp (PH3)2Fe and [Cp(CO)2Fe binuclear model complexes are reported

    A Joint Experimental and Computational Study on the Electronic Communication in Diethynylaryl Bridged (eta5-C5H5)Fe(eta2-dppe) and (eta5-C5H5)Fe(CO)2 Units.

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    A family of bimetallic complexes [Cp(CO)2Fe\u2013CC\u2013Ar\u2013 CC\u2013Fe(CO)2Cp] {Cp = C5H5; 6a\u2013g: Ar = C4H2S (a), 3- (C4H9)-C4HS (b), 3-(C16H33)-C4HS (c), C6H4 (d), 2,5-bis- (OC4H9)-C6H2 (e), 2,5-bis(OC8H17)-C6H2 (f), (C6H4)2 (g)} was prepared by the three-step Pd-catalysed extended one-pot (EOP) synthetic protocol from Bu3Sn\u2013CCH, X\u2013Ar\u2013X (X = I, Br) and Cp(CO)2FeI. Complexes 6a,d,g were then exposed to ultraviolet irradiation in the presence of an equivalent amount of 1,2-bis(diphenylphosphanyl)ethane (dppe) to form the corresponding bimetallic complexes [Cp(dppe)Fe\u2013CC\u2013 Ar\u2013CC\u2013Fe(dppe)Cp] (7a,d,g). Compounds 6a\u2013g and 7a,d,g were characterised by cyclic voltammetry (CV). The most significant electrochemical information comes from the oxidation of the dppe derivatives. The 06E\ub0 separations between the subsequent reversible waves suggest that the efficiency of the metal\u2013metal electronic coupling decreases in the order 7a 7d 7g. Complexes 7a and 7g were also chemically oxidised with [Fe(Cp*)]2[BF4] {Cp* = C5(CH3)5} and [Fe(Cp)]2[BF4] respectively, and the near infrared (NIR) spectra of the mixed-valence species 7a + and 7g + were recorded. A strong intervalence transition (IT) band was observed only for the radical cation 7a + . While this finding confirms the existence of an electronic interaction between the two termini when a 2,5-thiophene group is present in the spacer, the NIR spectrum of 7g + reveals a reduced efficiency in conveying electrons when the C4H2S moiety is replaced by a 4,4-biphenyl. In order to rationalise and quantify the extent of electronic communication, ruled by geometrical and electronic factors, density functional computational results on selected [Cp (PH3)2Fe] and [Cp(CO)2Fe] binuclear model complexes are reported
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