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Structure and reactivities of rhenium and technetium bis-arene sandwich complexes [M(η6-arene)2]+


Meola, Giuseppe; Braband, Henrik; Jordi, Sara; Fox, Thomas; Blacque, Olivier; Spingler, Bernhard; Alberto, Roger (2017). Structure and reactivities of rhenium and technetium bis-arene sandwich complexes [M(η6-arene)2]+. Dalton Transactions, 46(42):14631-14637.

Abstract

Sandwich complexes are important building blocks in medicinal inorganic chemistry for group 6 and 8 elements but are almost unknown for the manganese triad. We present the syntheses and full characterization of the mixed-arene 99Tc sandwich complexes [99Tc(η6-hmbz)(η6-C6H5–NH3)](PF6)2 and [99Tc(η6-hmbz)(η6-C6H5–Br)](PF6). Both comprise functionalities for conjugation to targeting molecules or for being included as substructures in pharmaceutically active lead compounds. Since η6-benzene ligands are too stably bound to be replaced with incoming ligands, we prepared naphthalene complexes [Re(η6-C6H6)(η6-napht)]+ and [Re(η6-napht)2]+. Their reactivities towards substitution are increased and one or both naphthalene ligands can be replaced with mono- or multi-dentate ligands. Combining the features of 99Tc and Re may lead to a molecule-based theranostic approach.

Abstract

Sandwich complexes are important building blocks in medicinal inorganic chemistry for group 6 and 8 elements but are almost unknown for the manganese triad. We present the syntheses and full characterization of the mixed-arene 99Tc sandwich complexes [99Tc(η6-hmbz)(η6-C6H5–NH3)](PF6)2 and [99Tc(η6-hmbz)(η6-C6H5–Br)](PF6). Both comprise functionalities for conjugation to targeting molecules or for being included as substructures in pharmaceutically active lead compounds. Since η6-benzene ligands are too stably bound to be replaced with incoming ligands, we prepared naphthalene complexes [Re(η6-C6H6)(η6-napht)]+ and [Re(η6-napht)2]+. Their reactivities towards substitution are increased and one or both naphthalene ligands can be replaced with mono- or multi-dentate ligands. Combining the features of 99Tc and Re may lead to a molecule-based theranostic approach.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:English
Date:18 July 2017
Deposited On:06 Dec 2017 15:13
Last Modified:18 Apr 2018 11:49
Publisher:Royal Society of Chemistry
ISSN:1477-9226
Funders:COST/SBFI project C13.0080/SNF IZCSZ0-174553
OA Status:Closed
Publisher DOI:https://doi.org/10.1039/c7dt02072d
PubMed ID:28766633
Project Information:
  • : FunderSNSF
  • : Grant ID
  • : Project TitleCOST/SBFI project C13.0080/SNF IZCSZ0-174553

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