Journal
INORGANICA CHIMICA ACTA
Volume 361, Issue 9-10, Pages 2609-2615Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2007.11.001
Keywords
chiral ligand; copper/zinc; crystal structure; photoluminescence
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Reaction of the ligand N,N'-(1,2-phenylene)diisonicotinamide (pia) with metal(II) salts MSO4 [M = Cu(II), Zn(II)] leads to the formation of two 2D coordination networks [(CuSO4)(pia) center dot 2CH(3)OH center dot H2O](n) (1) and [(ZnSO4)(pia) center dot 2H(2)O](n) (2). In the solid state of 1 the Cu(II) center adopt a five-coordination square pyramidal geometry, and the network is generated through the interconnection of the pia organic moieties by [Cu-2(SO4)(2)] dimers resulting in a 2D motif containing irregular inner cavities for guest molecule inclusion; in the case of 2, the Zn(II) center adopt a tetrahedral coordination geometry and the 2D network is formed by pia with another type of connector, zigzag SO42--Zn chains. Compound 2 displays intense photoluminescence in the solid state at room temperature upon photo-excitation at 245 nm. The photoluminescence behaviors of the polymer 2 are related to the intraligand emission excited state. (C) 2007 Published by Elsevier B.V.
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