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  • Title: Two Cu2 and Zn2 metallamacrocycles featuring a novel extended pi-conjugated carbazole bridge.
    Author: Paital AR, Wu AQ, Guo GC, Aromí G, Ribas-Ariño J, Ray D.
    Journal: Inorg Chem; 2007 Apr 16; 46(8):2947-9. PubMed ID: 17375911.
    Abstract:
    Two neutral dinuclear metallamacrocycles, [Cu2(hbca)2].2CHCl3.2H2O (1) and [Zn2(hbca)2].7H2O (2), have been assembled from reactions of the new rigid carbazole-based ligand H2hbca [N,N'-bis(2-hydroxobenzylidene)-9H-carbazole-3,6-diamine] with copper(II) or zinc(II) acetate. The extended aromatic ligand spacer is responsible for intermetallic antiferromagnetic exchange, which is rationalized using the spin-polarization formalism with the help of density functional theory calculations.
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