Bimetallic polymeric macrocyclic chain structures formed by lanthanide(III) nitrates and Hg(C4H6NO)2; the crystal structures of [Hg2Eu(C4H6NO)4(NO3)3]n and [Hg3Tb2(C4H6NO)6(NO3)6]n

Abstract

Reaction of HgL₂(L = C₄H₆NO, the anion of 2-pyrrolidone) with hydrated lanthanide(III)(Ln) nitrates yields two new series of polymeric heterometallic complexes of stoicheiometries Hg₂LnL₄(NO₃)₃ and Hg₃Ln₂L₆(NO₃)₆, representative members of which [Ln = Eu (1) and Ln = Tb (2), respectively] have been structurally characterized.