Self-assembly and structure of interconverting multinuclear inorganic arrays: A [4 x 5]-Ag-20(I) grid and an Ag-10(I) quadruple helicate

Citation
Pnw. Baxter et al., Self-assembly and structure of interconverting multinuclear inorganic arrays: A [4 x 5]-Ag-20(I) grid and an Ag-10(I) quadruple helicate, CHEM-EUR J, 6(24), 2000, pp. 4510-4517
Citations number
70
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry
Journal title
CHEMISTRY-A EUROPEAN JOURNAL
ISSN journal
0947-6539 → ACNP
Volume
6
Issue
24
Year of publication
2000
Pages
4510 - 4517
Database
ISI
SICI code
0947-6539(200012)6:24<4510:SASOIM>2.0.ZU;2-Q
Abstract
Coordination of the pentatopic ligand 3 with Ag-I leads to the simultaneous self-assembly of two polynuclear architectures: a [4 x 5] grid-type specie s 10 and a quadruple-helicate 11, which contain twenty and ten silver ions, respectively. Their structures have been established by X-ray diffraction analysis of the crystals obtained as a mixture on crystallisation. Complex 10 contains two [2 x 5]-Ag-10(I) rectangular subgrids located on opposite s ides of an array of parallel ligands of 3 that are twisted into a transoid N=C-C=N arrangement around the central C-C bond; it may thus be formulated as a grid of grids: [2 x (2 x 5)]. Complex 11 is an inorganic quadruple hel icate that consists of two sets of two parallel ligands of 3 connected by a n array of ten silver ions. Both compounds 10 and 11 are novel types of pol ynuclear complexes that are composed of two subunits. Their formation point s to the possibility of generating specific arrays of metal ions by self-as sembly, involving, in particular, a combination of subunits within the over all entity. They represent organised patterns of ion dots of special signif icance in view of their formal relationship to quantum dots.