4,4 '-bipyridine and bis(4-pyridyl)propane as bridging ligands in the supramolecular assembly of silver(I) polyhedra containing embedded acetylenediide
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AbstractSix new silver(l) double salts, namely [Ag-13(C-2)(2)(CF3CO2)(9)(bipy)(4)(H2O)(3)] (1), [Ag-18(C-2)(2)(C2F5CO2)(18)(bipyH)(4)] center dot 3H(2)O (2), [Ag-6(C-2)(CF3CO2)(4)(bpp)] (3), [Ag-6(C-2)(CF5CO2)(5)(bppH)](n) (4), [Ag-6(C-2)(CF3CO2)(5)(bppH)](n) (5) and [Ag-23(C-2)(4)(CF(3)CO2)(15)(bpp)(6)] center dot HO (6) (bipy = 4,4'-bipyridine, bpp = bis(4-pyridyl) propane), have been hydrothermally synthesized and structurally characterized. In complex 1, the building units [Ag-24(C-2)(4)(CF3CO2)(16)(H2O)(6)] are connected by bipy ligands to form a two-dimensional network, which are further linked into a three-dimensional architecture via argentophilic interactions. Complex 2 is composed of two independent [Ag(bipyH)(2)](3+) cations and a [Ag-16(C-2)(2)(C2F5CO2)(18)](6-) cluster, whose core is a (C-2)(2)@Ag-16 double cage constructed from edge-sharing of two monocapped square antiprisms. Complex 3 has a two-dimensional architecture generated from bpp-bridged silver(I) columns. The virtually iso-structural complexes 4 and 5 each has a branched-tree architecture. The backbone is composed of fused silver(l) double cages, with C-2(2-) species embedded in its stem and an exterior coat comprising anionic perfluorocarboxyate and protonated bpp ligands. Complex 6 exhibits a two-dimensional architecture in which the basic building unit is an unusual silver(l) column composed of four consecutively fused C-2@Ag-n cages. (C) 2005 Elsevier Ltd. All rights reserved.
All Author(s) ListZhao XL, Mak TCW
Journal namePolyhedron
Year2005
Month6
Day2
Volume Number24
Issue Number8
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Pages940 - 948
ISSN0277-5387
LanguagesEnglish-United Kingdom
Keywords4,4 '-bipyridine; acetylenediide; bis(4-pyridyl)propane; bridging ligand; silver(I) complex; supramolecular assembly
Web of Science Subject CategoriesChemistry; Chemistry, Inorganic & Nuclear; CHEMISTRY, INORGANIC & NUCLEAR; Crystallography; CRYSTALLOGRAPHY

Last updated on 2020-30-03 at 01:55