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From TcVII to TcI; facile syntheses of bis-arene complexes [99(m)Tc(arene)2]+ from pertechnetate.


ABSTRACT: Bis-arene complexes of technetium represent a fundamental class of organometallic compounds. Due to complex synthetic routes, no detailed insights into their properties have been reported so far. Reacting [99TcO4]- with arenes in the exclusive presence of AlCl3 gives highly stable [99Tc(arene)2]+ in good yields. These complexes have extraordinarily high stabilities, where oxidation is found to occur at potentials higher than +1.3 V and reduction at potentials below -2 V vs. Fc/Fc+. The 99mTc analogues are similarly synthesised by applying a novel ionic liquid extraction pathway. Complexes of 99mTc with suitably functionalized arenes will represent new building blocks for bioorganometallic pharmaceuticals in molecular imaging.

SUBMITTER: Benz M 

PROVIDER: S-EPMC5424581 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature

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From Tc<sup>VII</sup> to Tc<sup>I</sup>; facile syntheses of bis-arene complexes [<sup>99(m)</sup>Tc(arene)<sub>2</sub>]<sup>+</sup> from pertechnetate.

Benz Michael M   Braband Henrik H   Schmutz Paul P   Halter Jonathan J   Alberto Roger R  

Chemical science 20140905 1


Bis-arene complexes of technetium represent a fundamental class of organometallic compounds. Due to complex synthetic routes, no detailed insights into their properties have been reported so far. Reacting [<sup>99</sup>TcO<sub>4</sub>]<sup>-</sup> with arenes in the exclusive presence of AlCl<sub>3</sub> gives highly stable [<sup>99</sup>Tc(arene)<sub>2</sub>]<sup>+</sup> in good yields. These complexes have extraordinarily high stabilities, where oxidation is found to occur at potentials higher  ...[more]

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