Syntheses, structures, and magnetic properties of diphenoxo-bridged Cu(II)Ln(III) and Ni(II)(low-spin)Ln(III) compounds derived from a compartmental ligand (Ln = Ce-Yb).

Syntheses, characterization, and magnetic properties of a series of diphenoxo-bridged discrete dinuclear M(II)Ln(III) complexes (M = Cu or Ni, Ln = Ce-Yb) derived from the compartmental Schiff base ligand, H(2)L, obtained on condensation of 3-ethoxysalicylaldehyde with trans-1,2-diaminocyclohexane, are described. Single crystal X-ray structures of eight Cu(II)Ln(III) compounds (Ln = Ce (1), Pr (2), Nd (3), Sm (4), Tb (7), Ho (9), Er (10), and Yb (12)) and three Ni(II)Ln(III) (Ln = Ce (13), Sm (16), and Gd (18)) compounds have been determined. Considering the previously reported structure of the Cu(II)Gd(III) (6) compound (Eur.

The coordination polymers poly[mu-4,4'-bipyridyl-di-mu-formato-copper(II)] and catena-poly[[[diaqua(1-benzofuran-2,3-dicarboxylato)copper(II)]-mu-1,2-di-4-pyridylethane] dihydrate].

The title compounds, [Cu(CHO(2))(2)(C(10)H(8)N(2))](n), (I), and {[Cu(C(10)H(4)O(5))(C(12)H(12)N(2))(H(2)O)(2)].2H(2)O}(n), (II), are composed of one-dimensional linear coordination polymers involving copper(II) ions and bidentate bipyridyl species. In (I), the polymeric chains are located on twofold rotation axes at (x, x, 0) and are arranged in layered zones centered at z = 0, 1/4, 1/2 and 3/4 parallel to the ab plane of the tetragonal crystal.

Two- and three-dimensional hydrated coordination polymers of diaqualanthanum(3+) ions with 2-hydroxypropanedioate, oxalate and acetate anions as bridging ligands.

The title compounds, poly[[tetraaquadi-mu-2-hydroxypropanedioato-mu-oxalato-dilanthanum(III)] tetrahydrate], {[La(2)(C(2)O(4))(C(3)H(2)O(5))(2)(H(2)O)(4)].4H(2)O}(n), (I), and poly[[tetra-mu-acetato-tetraaqua-mu-oxalato-dilanthanum(III)] dihydrate], {[La(2)(C(2)O(4))(C(2)H(3)O(2))(4)(H(2)O)(4)].2H(2)O}(n), (II), represent crystalline hydrates of coordination polymers of diaqualanthanum(3+) ions with different combinations of bridging carboxylate ligands, viz.

A unique two-dimensional coordination network of 1-benzofuran-2,3-dicarboxylate with lanthanum(III) obtained by solvothermal synthesis.

The title compound, poly[bis[diaqualanthanum(III)]-tris(mu-1-benzofuran-2,3-dicarboxylato)], [La(2)(C(10)H(4)O(5))(3)(H(2)O)(4)](n), was obtained under solvothermal conditions by reacting lanthanum trinitrate hexahydrate with 1-benzofuran-2,3-dicarboxylic acid in a strongly basic environment. It forms an extended two-dimensional coordination network, wherein every lanthanum ion links to four deprotonated diacid ligands, while two of the latter bridge between adjacent metal cations. The component species are additionally linked to one another by hydrogen bonds.

Square-grid coordination networks of (5,10,15,20-tetra-4-pyridylporphyrinato)zinc(II) in its clathrate with two guest molecules of 1,2-dichlorobenzene: supramolecular isomerism of the porphyrin self-assembly.

The title compound, (5,10,15,20-tetra-4-pyridylporphyrinato)zinc(II) 1,2-dichlorobenzene disolvate, [Zn(C(40)H(24)N(8))].2C(6)H(4)Cl(2), contains a clathrate-type structure. It is composed of two-dimensional square-grid coordination networks of the self-assembled porphyrin moiety, which are stacked one on top of the other in a parallel manner.

Square-grid coordination networks of diaquabis(4,4'-bipyridyl)copper(II) crosslinked by hydrogen bonds through two monoanions of 1-benzofuran-2,3-dicarboxylic acid and five molecules of water.

The title compound, poly[[[diaquacopper(II)]-di-mu-4,4'-bipyridyl] bis(3-carboxy-1-benzofuran-2-carboxylate) pentahydrate], {[Cu(C(10)H(8)N(2))(2)(H(2)O)(2)](C(10)H(5)O(5))(2).5H(2)O}(n), crystallizes in a single-framework architecture. It is composed of two-dimensional square-grid coordination networks of 1:2:2 copper-4,4'-bipyridine-water units, wherein each copper ion coordinates equatorially to four bipyridyl units and axially to two water ligands.

Probing the supramolecular interaction synthons of 1-benzofuran-2,3-dicarboxylic acid in its monoanionic form.

1-Benzofuran-2,3-dicarboxylic acid (C(10)H(6)O(5)) is a dicarboxylic acid ligand which can readily engage in organometallic complexes with various metal ions. This ligand is characterized by an intramolecular hydrogen bond between the two carboxyl residues, and, as a monoanionic species, readily forms supramolecular adducts with different organic and inorganic cations. These are a 1:1 adduct with the dimethylammonium cation, namely dimethylammonium 3-carboxy-1-benzofuran-2-carboxylate, C(2)H(8)N(+).

The first coordination polymer of lanthanum(III) with a naphthalene-1,4,5,8-tetracarboxylic 1,8-anhydride derivative.

The title compound, catena-poly[[[heptaaqualanthanum(III)]-mu-1,3-dioxo-2-oxa-1H,3H-phenalene-6,7-dicarboxylato-kappa(2)O(6):O(7)] hemi(4,8-dicarboxynaphthalene-1,5-dicarboxylate) dihydrate], {[La(C(14)H(4)O(7))(H(2)O)(7)](C(14)H(6)O(8))(0.5).2H(2)O}(n), is a dihydrate of a coordination polymer between the dianion of naphthalene-1,4,5,8-tetracarboxylic 1,8-anhydride and the heptahydrated lanthanum(III) ion, charge balanced by an additional 4,8-dicarboxynaphthalene-1,5-dicarboxylate dianion that is located on an inversion centre and is not coordinated to the metal ion.

Hydrated hexacyanometallate(III) salts of triaqua(18-crown-6)lanthanoid(III) and tetraaqua(18-crown-6)lanthanoid(III) cations containing nine- and ten-coordinate lanthanoids.

Tetraaqua(18-crown-6)cerium(III) hexacyanoferrate(III) dihydrate, [Ce(C(12)H(24)O(6))(H(2)O)(4)][Fe(CN)(6)].2H(2)O, and tetraaqua(18-crown-6)neodymium(III) hexacyanoferrate(III) dihydrate, [Nd(C(12)H(24)O(6))(H(2)O)(4)][Fe(CN)(6)].2H(2)O, are isomorphous and isostructural in the C2/c space group, where the cations, which contain ten-coordinate lanthanoid centres, lie across twofold rotation axes and the anions lie across inversion centres.

Syntheses, structures, and magnetic properties of mononuclear CuII and tetranuclear CuII3MII (M = Cu, Co, or Mn) compounds derived from N,N'-ethylenebis(3-ethoxysalicylaldimine): cocrystallization due to potential encapsulation of water.

Syntheses, structures, and magnetic properties of one mononuclear inclusion compound [CuIIL1 within (H2O)] (1) and three tetrametal systems of the composition [{CuIIL1}2{CuIIL1MII(H2O)3}]ClO4)2 (M = Cu (2), M = Co (3), M = Mn (4)) derived from the hexadentate Schiff base compartmental ligand N,N'-ethylenebis(3-ethoxysalicylaldimine) (H2L1) have been described. Compounds 1 and 2 crystallize in orthorhombic Pbcn and monoclinic P21/c systems, respectively, and the space group of the isomorphous compounds 3 and 4 is monoclinic C2/c. The water molecule in 1 is encapsulated in the vacant O4 compartment because of the hydrogen bonding interactions with the ether and phenolate oxygens, resulting in the formation of an inclusion product.

Syntheses, structures, and magnetic properties of diphenoxo-bridged M(II)Ln(III) complexes derived from N,N'-ethylenebis(3-ethoxysalicylaldiimine) (M = Cu or Ni; Ln = Ce-Yb): observation of surprisingly strong exchange interactions.

A series of heterodinuclear Cu(II)Ln(III) and Ni(II)Ln(III) complexes, [M(II)L(1)Ln(III)(NO(3))(3)] (M = Cu or Ni; Ln = Ce-Yb), with the hexadentate Schiff base compartmental ligand N,N'-ethylenebis(3-ethoxysalicylaldiimine) (H(2)L(1)) have been synthesized and characterized. The X-ray crystal structure determinations of 13 of these compounds reveal that they are all isostructural. All of these complexes crystallize with the same orthorhombic P2(1)2(1)2(1) space group with closely similar unit cell parameters.

Ferromagnetic exchange in two dicopper(II) complexes using a mu-alkoxo-mu-7-azaindolate bridge.

Syntheses, structures, and magnetic properties of two heterobridged mu-alkoxo-mu-7-azaindolate dicopper(II) complexes, [Cu(II)2(L-F)(mu-C7H5N2)] (1) and [Cu(II)2(L-H)(mu-C7H5N2)].CH3OH (2) (H3L-F = 1,3-bis(3-fluorosalicylideneamino)-2-propanol; H3L-H = 1,3-bis(salicylideneamino)-2-propanol) have been reported. Aside from being a new type of heterobridged complex, 1 and 2 exhibit ferromagnetic interaction (2J = 52 cm(-1) for 1 and 33.