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Geometry and reactivity in crystalline solids formed by transition metal citrate cubanes

AutorFalvello, Larry R.; Forcén-Vázquez, E.
Fecha de publicación2012
CitaciónACA Meeting 2012
ResumenTransition metals (M) and quadruply deprotonated citrate (citr4-) form complexes with [M4(citr)4](8-) structural building blocks that have at their cores an M4O4 unit with cubane topology. At the periphery of the [M4(citr)4](8-) unit is an icosahedron formed by twelve oxygen atoms with partial negative charges, to which metal atoms can bind in a number of ways to give products with discrete molecular structures or with 1-, 2-, and 3-D polymers in the crystalline state. In addition to geometrically regular and irregular shapes, some of these products also display reactivity in the solid state, with reversible chemical processes having been observed to change the dimension of the polymer or to produce ion transfer with structual modulation. The geometries of the products reported to date are analyzed systematically in this presentation, and the geometrical relationships between reactants and products in a topotactic solid-state reaction are explored in detail. Unusual solvent uptake and loss in some of these solids is described, with reference to the structural features which enable this behavior.
DescripciónTrabajo presentado al American Crystallographic Association Annual Meeting celebrado en Boston (US) del 28 de julio al 1 de agosto de 2012.
Versión del editorhttp://www.amercrystalassn.org/2012-transactions
URIhttp://hdl.handle.net/10261/121800
Aparece en las colecciones: (ICMA) Comunicaciones congresos
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