Página Inicial CNEA Laboratorio TANDAR Página Inicial TANDAR Historia del acelerador TANDAR Web interno Web mail
Inicio » Actividades I+D > Publicaciones 2004 > Comparative study of two chemically isos...
artículo con referato
"Comparative study of two chemically isostructural polymers: [Cu2(VO2)(HPO4)2(NO3)(bpy)2]·2H2O/H3PO4 (bpy is 2,2′-bipyridine)"
Y. Moreno, A. Vega, E. Spodine, E. Ushak and R. Baggio
Acta Cryst. C 60(10) (2004) m484-m488
The title compounds, poly[bis(2,2′-bipyridine)bis(μ3-hydrogen phosphato)nitratodi-μ2-oxo-dicopper(II)vanadium dihydrate], [Cu2(VO2)(HPO4)2(NO3)(C10H8N2)2]·2H2O, (I), and poly[bis(2,2′-bipyridine)bis(μ3-hydrogen phosphato)nitratodi-μ2-oxo-dicopper(II)vanadium phosphoric acid solvate], [Cu2(VO2)(HPO4)2(NO3)(C10H8N2)2]·H3PO4, (II), were obtained by similar hydrothermal methods but under different crystallization conditions. The trinuclear entity which serves as the basic unit in both structures presents two independent CuII ions immersed in similar square-pyramidal N2O3 environments plus an octahedral VO6 core and is organized into a one-dimensional polymer, which is essentially identical in the two structures. The compounds are stabilized by different solvates, viz. two crystallization water molecules in (I) and a phosphoric acid molecule in (II), which provide the main structural differences through the diversity of interchain interactions in which they serve as bridges.
Av. Gral Paz y Constituyentes, San Martín, Pcia. de Buenos Aires, Argentina
Tel: (54-11) 6772-7007 - Fax: (54-11) 6772-7121