Bis(ethyl-enediammonium) tetra-deca-borate.

The title compound, 2C(2)H(10)N(2) (2+)·B(14)O(20)(OH)(6) (4-), consists of a centrosymmetric tetra-deca-borate anion and two ethyl-enediammonium cations. The anions are inter-connected through strong O-H⋯O hydrogen bonds into a three-dimensional supra-molecular network with channels along [100], [010], [001] and [111]. The diprotonated cations reside in the channels and inter-act with the inorganic framework by extensive N-H⋯O hydrogen bonds.

Poly[bis(mu4-benzene-1,2-dicarboxylato)di-mu3-isonicotinato-dilanthanum(III)].

In the title compound, [La(2)(C(8)H(4)O(4))(2)(C(6)H(4)NO(2))(2)](n), there are two crystallographically independent La centres, both nine-coordinated in tricapped trigonal prismatic coordination geometries by eight carboxylate O atoms and one pyridyl N atom. The La centres are linked by the carboxylate groups of isonicotinate (IN(-)) and benzene-1,2-dicarboxylate (BDC(2-)) ligands to form La-carboxylate chains, which are further expanded into a three-dimensional framework with nanometre-sized channels by La-N bonds. In the construction of the resultant architecture, in tricapped trigonal prismatic coordination geometries by eight carboxylate O atoms and one pyridyl N atom, while the BDC ligands link to four different cations each, displaying penta- and heptadentate chelating-bridging modes, respectively.

Poly[tetra-aqua-μ(3)-benzene-1,2-di-carboxyl-ato-μ(3)-bromido-penta-μ(2)-bromido-octa-μ(3)-isonicotinato-hepta-copper(I)trilanthanum(III)].

A new lanthanum(III)-copper(I) heterometallic coordination polymer, [Cu(7)La(3)Br(6)(C(6)H(4)NO(2))(8)(C(8)H(4)O(4))(H(2)O)(4)](n), has been prepared by a hydro-thermal method. Of the three La atoms in the asymmetric unit, two are eight-coordinate with bicapped trigonal-prismatic configurations; the third is nine-coordinated and has a tricapped trigonal-prismatic coordination geometry. Of the seven Cu atoms, two are two-coordinate with CuBrN and CuN(2) ligand sets, three have trigonal configurations, viz.

Synthesis and characterization of QD-3: the first organically templated aluminoborate with 11-, 12-, and 14-ring intersecting channels.

QD-3, a novel aluminoborate (TETA) 2[Al 2B 10 O 20].0.25H 2O (TETA = triethylenetetramine), has been solvothermally synthesized and characterized by IR, thermogravimetric analysis, power X-ray diffraction, elemental analysis, and single-crystal X-ray diffraction.

Poly[diaqua-penta-kis(μ(4)-benzene-1,2-dicarboxyl-ato)(μ(3)-benzene-1,2-dicarboxyl-ato)tetra-thulium(III)].

The title compound, [Tm(4)(C(8)H(4)O(4))(6)(H(2)O)(2)](n), has been synthesized hydro-thermally. The asymmetric unit has four unique Tm(III) ions that are six-, seven-, eight- and nine-coordinate. The cations are inter-connected by bridging benzene-1,2-dicarboxyl-ate (BDC) anions to form an infinite two-dimensional framework, in which the BDC ligands adopt three different coordination modes.

Poly[tetra-aqua-μ(4)-bromido-di-μ(2)-bromido-μ(2)-hydroxido-di-μ(3)-iso-nicotinato-tetra-μ(2)-isonicotinato-tetra-copper(I)dithulium(III)].

A new thulium(III)-copper(I) heterometallic coordination polymer, [Cu(4)Tm(2)Br(3)(C(6)H(4)NO(2))(6)(OH)(H(2)O)(4)](n), has been prepared by a hydro-thermal method. The Tm and both Cu atoms lie on mirror planes. The Tm atom is seven-coordinate with a capped distorted trigonal-prismatic coordination geometry, while the Cu atoms adopt trigonal CuBrN(2) and tetra-hedral CuBr(3)N coordination modes, respectively.