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Exploration of heterometallic systems containing silver(I) in acyclic Schiff base ligands: Finite and infinite self-assemblies as a result of silver(I)-carbon bond and silver(I)⋯silver(I) interaction
A BISWAS, S MONDAL, L MANDAL, A JANA, P CHAKRABORTY,
Published in -
2014
Volume: 414
   
Pages: 199 - 209
Abstract
The work in this report describes the syntheses and crystal structures of nine copper(II)-silver(I) compounds derived from some single-compartment N(imine)2O(phenoxo)2 or double-compartment N(imine) 2O(phenoxo)2-O(phenoxo)2O(methoxy/ethoxy) 2 acyclic Schiff base ligands. The nine compounds are [{Cu II(ClO4)Lsal-enAgI} 2{CuII(ClO4)Lsal-enAg I(H2O)}]n (1), [CuIIL sal-pnAgI(ClO4)]n (2), [{Cu IILsal-pnAgI(NO3)}2] (3), [(CuIILacpn-en)2AgI(MeCN) 2](ClO4) (4), [{CuIILOMe-enAg I(NO3)}2] (5), [{CuIIL OMe-pnAgI(NO3)}2] (6), [{Cu IILOMe-pnAgI(NO3)} 2]·2H2O (7), [{CuIIL OEt-enAgI(NO3)}2] (8) and [{Cu IILOEt-opAgI(MeOH)}2](ClO 4)2 (9), where the superscripts in the ligand symbols mean the following: (i) sal, acpn, OMe and OEt indicate that the aldehyde counterpart is salicylaldehyde, 2-hydroxyacetophenone, 3-methoxysalicylaldehyde and 3-ethoxysalicylaldehyde, respectively; (ii) en, pn and op indicate that the diamine counterpart is ethylenediamine, 1,3-diaminopropane and o-phenylenediamine, respectively. Copper(II) in all these compounds occupies a N2O2 compartment and the two phenoxo oxygen atoms in all cases bridge one copper(II) and one silver(I) centers. Compound 4 is a trinuclear CuIIAgICuII system. Compounds 3 and 5-9 are dimer-of-dinuclear compounds, in which the dimerization takes place due to interdinuclear Cu-O(nitrate) and Ag⋯Ag interactions in 3, 5 and 6 and due to Ag-π (η1-/η2-) bonds in 7-9. Compounds 2 and 1 are one-dimensional coordination polymers due to Ag-π (η2-)/Ag-π (η3-) bonds. CSD search/analysis reveals some definite significant aspects in both the Ag-π and Ag⋯Ag bonded systems in the present investigation. © 2014 Elsevier B.V. All rights reserved.
About the journal
JournalInorganica Chimica Acta
Publisher-
ISSN0020-1693
Open AccessNo