Control of molecular architecture by the degree of deprotonation: self-assembled di- and tetranuclear copper(ii) complexes of N,N′-bis(2-pyridylmethyl)pyrazine-2,3-dicarboxamide

Literature Information

Publication Date 2003-11-05
DOI 10.1039/B308263F
Impact Factor 6.222
Authors

Julia Hausmann, Geoffrey B. Jameson, Sally Brooker


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Abstract

In the absence of added base, a deep navy-blue dimeric copper complex [CuII(H2L)(MeCN)]2(BF4)4 (1) of the non-deprotonated bis-terdentate diamide ligand H2L self-assembles whereas in the presence of base a grass-green [2 × 2] grid complex [CuII(HL)]4(BF4)4 (2) of the monodeprotonated ligand HL−, a rare example of a discrete grid of pyrazine-bridged metal ions, is formed.

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