Poly[[aquabis(mu(2)-isonicotinato-kappa(3) N : O,O')cadmium(II)] 1,4-di-3-pyridyl-2,3-diaza-1,3-butadiene hemisolvate]

Departamento de Ciencias Químicas, Facultad de Ingeniería, Ciencias y Administración, Universidad de La Frontera, Casilla 54-D, Temuco, Chile.
Acta Crystallographica Section C Crystal Structure Communications (Impact Factor: 0.33). 08/2007; 63(Pt 7):m327-30. DOI: 10.1107/S0108270107026698
Source: PubMed


The title compound, {[Cd(C(6)H(4)NO(2))(2)(H(2)O)] x 0.5C(12)H(10)N(4)}(n), presents an intricate three-dimensional network with cavities traversing it in three orthogonal directions, where the (disordered) guest molecules lodge. The compound is a member of a series of coordination polymers presenting the same main host framework but with guests of variable size and geometry, to which the flexible skeleton seems to adapt. The disorder in the structure is explained in terms of an apparently well defined specificity in the position/orientation of the guest molecules, as determined by the main framework.

0 Reads
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The Co(II) atom in bis(5-aminotetrazole-1-acetato)tetraaquacobalt(II), [Co(C3H4N5O2)2(H2O)4], (I), is octahedrally coordinated by six O atoms from two 5-aminotetrazole-1-acetate (atza) ligands and four water molecules. The molecule has a crystallographic centre of symmetry located at the Co(II) atom. The molecules of (I) are interlinked by hydrogen-bond interactions, forming a two-dimensional supramolecular network structure in the ac plane. The Cd(II) atom in catena-poly[[cadmium(II)]-bis(mu-5-aminotetrazole-1-acetato], [Cd(C3H4N5O2)2]n, (II), lies on a twofold axis and is coordinated by two N atoms and four O atoms from four atza ligands to form a distorted octahedral coordination environment. The Cd(II) centres are connected through tridentate atza bridging ligands to form a two-dimensional layered structure extending along the ab plane, which is further linked into a three-dimensional structure through hydrogen-bond interactions.
    Acta Crystallographica Section C Crystal Structure Communications 02/2008; 64(Pt 1):m26-9. DOI:10.1107/S0108270107051098 · 0.33 Impact Factor