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(HETERO)BIMETALLIC MAIN GROUP METAL COMPLEXES OF DIANIONIC NITROGEN-RICH GUANIDINATE LIGAND

Authors: Vlk Lukáš | Chlupatý Tomáš | Růžička Aleš

Year: 2023

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	(HETERO)BIMETALLIC MAIN GROUP METAL COMPLEXES OF DIANIONIC NITROGEN-RICH GUANIDINATE LIGAND	Guanidinates are popular N-chelating donor ligands in the coordination and organometallic chemistry of almost the whole periodic table. Successful use of, mostly anionic, both transition and main group metal guanidinates in various catalytic processes, materials science, and other chemical transformations has been reported. The contrasting scarcity of dianionic/dinuclear guanidinate complexes in the literature makes this topic of high interest. Great configurability of the central CN3 moiety in terms of steric/electronic contributions opens the door for suitable expansion of the π-electron conjugated skeleton and possible accomodation of two (or more) metal atoms.1 Our chosen nitrogen-rich scaffold engages in six-membered triazametallacycles, unusual for guanidinates, as well as expected four-membered k2-bidentate chelates, and their combinations (Figure 1 – left), showing electronic flexibility and versatility in the coordination of a range of elements. Moreover, the environment of the coordinated metal atoms can be further refined by careful substituent design (Figure 1 – right). The nature of the coordinated atoms and the respective relationship between the two metal centres was therefore studied in detail.