Dinitrogen reduction chemistry with scandium provides a complex with two side-on (N[double bond, length as m-dash]N)^2- ligands bound to one metal: (C₅Me₅)Sc[(µ-η²:η²-N₂)Sc(C₅Me₅)₂]₂.

ABSTRACT: Although there are few reduced dinitrogen complexes of scandium, this metal has revealed a new structural type in reductive dinitrogen chemistry by reduction of bis(pentamethylcyclopentadienyl) scandium halides under N₂. Reduction of (Cp* = C₅Me₅) with potassium graphite (KC₈) under dinitrogen generates the dark blue paramagnetic complex , 1. This end-on bridging (N[double bond, length as m-dash]N)^2- complex is a diradical with a magnetic moment of 2.8µ _B. Upon further reduction of 1 with KC₈, the orange diamagnetic trimetallic complex , 2, is obtained. This complex has an unprecedented structure in which two side-on bridging (N[double bond, length as m-dash]N)^2- ligands are bound to the central

SUBMITTER: Queen JD 

PROVIDER: S-EPMC11411411 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature