An azobenzene based iminopyridine ligand 1 has been synthesized by a condensation reaction between N,N-dimethyl-4,4′-azodianiline and 2-formylpyridine. The complexation of the with ZnCl2 afforded tetrahedral neutral zinc metal complex (2) formulated as [(Azo-Imino-Py)ZnCl2]. crystal structure analysis indicates formation tetracoordinated zinc(II) ion expected geometry. In solid state, 2D supramolecular architecture reinforced π–π stacking hydrogen bonding is observed. UV–visible...

This paper illustrates the versatility of mono- and heterobinuclear complexes with dissymmetric compartmental ligands in designing molecular supramolecular heterometallic systems. Mononuclear side-off bicompartmental derived from o-vanillin act efficiently, through their empty compartment, as hydrogen-bond receptors second coordination sphere ligands. These Schiff- bases are also suitable for synthesizing 3d-3d′ 3d-4f complexes. Both can be employed nodes obtaining polymers various...

Four new 1D coordination polymers have been constructed from [LCuIIMII] nodes connected by various spacers—the dianion of pyrazole-3,5-dicarboxylic acid (pzdc2−), the trianion trimesic (trim3−), tetracyanonickelate(II) anion ([Ni(CN)4]2−), and dicyanamide (dca−) [MII = MnII, CoII, L2− is Schiff-base resulting 2:1 condensation 3-methoxysalicylaldehyde with 1,3-propanediamine, N,N′-propylene-bis-(3-methoxysalycilideneiminato)]: [LCuMn(pzdc)(CH3OH)(H2O)]·H2O (1),...

The first examples of chiral single component conductors are reported. Both (S,S) and (R,R) enantiomers 5,6-dimethyl-5,6-dihydro-1,4-dithiin-2,3-dithiolate (dm-dddt) ligand have been used to prepare anionic metal bis(dithiolene) complexes formulated as ([(n-Bu)4N][M(dm-dddt)2] (M = Au, Ni), which isostructural according crystal X-ray analysis. Single transport measurements indicate semiconducting behavior for the radical Ni complexes, with low room temperature conductivity values high...

A bimetallic coordination polymer, infinity (2)[{LNi (II)Co (II)}(dca) 2], has been constructed from heterobinuclear [Ni (II)] nodes and dicyanamido spacers [L (2-) is the dianion of Schiff base resulting 2:1 condensation 3-methoxysalicyladehyde with 1,3-propanediamine; L = N, N'-propylenebis(3-methoxysalycilideneiminato)]. The intranode Co (II)-Ni (II) interaction was found to be ferromagnetic because orthogonality magnetic orbitals. Below 12 K, onset canted ordering observed.

Heterobinuclear [CuIIMnII] and [CuIICoII] cationic complexes can efficiently act as nodes for designing coordination polymers. The crystal structures of two binuclear precursors, [LCuCo(NO3)2] (1) [LCuMn(NO3)2] (2), have been solved (L2− is the dianion Schiff base resulting from 2 : 1 condensation 3-methoxysalicyladehyde with 1,3-propanediamine). nitrato ligands, coordinated to CoII and, respectively, MnII ions are easily replaced by exo-dentate in 1-D polymers:...

The syntheses, structural investigations, magnetic and photophysical properties of a series 10 lanthanide mononuclear complexes, containing the heteroditopic ligand cyanomethylene-bis(5,5-dimethyl-2-oxo-1,3,2λ(5)-dioxa-phosphorinane) (L), are described. crystallographic analyses indicate two types: in first one, [Ln(III)(L)3(H2O)2]·H2O (Ln = La, Pr, Nd), metal ions eight-coordinated within square antiprism geometry, while second [Ln(III)(L)3(H2O)]·8H2O Sm, Eu, Gd, Tb, Dy, Ho, Er), contains...

The electroactive ligands (2,4-bis-tetrathiafulvalene[6-(dipyridin-2'-ylamino)]-1,3,5-triazine) TTF(2)-tz-dpa (1) and (2-tetrathiafulvalene[4,6-bis-(dipyridin-2'-ylamino)]-1,3,5-triazine) TTF-tz-dpa(2) (2) have been synthesized by palladium cross-coupling catalysis, the single crystal X-ray structure for 1 was determined. In solid state TTF triazine units are practically coplanar short intermolecular S···S contacts established. Two neutral one tetracationic Zn(II) complexes, formulated as...

The synthesis and crystal structure of the first tetrathiafulvalene (TTF) based radical cation salt containing heteroleptic paramagnetic anion [CrIII(2,2′-bipy)(C2O4)2]− are reported. In formulated as α′-(BEDT-TTF)2[Cr(C2O4)2(2,2′-bipy)]·CHCl2CH2Cl according to single-crystal X-ray structure, BEDT-TTF (bis(ethylenedithio)tetrathiafulvalene) donors in a mixed valence state form two types uniform chains within organic layers. Two overlap modes observed these chains, which canted with respect...

The condensation reaction of (4-(6,7-dimethyldithio-tetrathiafulvalene)-aniline) with 2,6-diformylpyridine afforded an electroactive Schiff base (N,N,N) pincer (3). This was reacted Zn(II) cation to yield the corresponding Zinc chloride complex (4). crystal structure newly prepared zinc reveals that tetrathiafulvalene (TTF) is neutral and pentacoordinated. two chlorines are involved in a set hydrogen bonds giving rise 2D supramolecular grid arrangement. electronic absorption properties...

A new heteroditopic ligand, cyanomethylene-bis(5,5-dimethyl-2-oxo-1,3,2λ5-dioxa-phosphorinane) 1 (bphosCN), has been reacted with Fe(ClO4)3 to afford the mononuclear complex Fe(bphosCN)32 which crystallized in cubic system, space group Pa. The iron center, chelated by oxygen atoms of shows an almost perfect octahedral geometry, CN groups disposed at 120° each other. Further reaction AgClO4 provided heterometallic coordination polymer ∞2{[(Fe(bphosCN)3)3Ag3(H2O)2]·(ClO4)3} 3 as unique...

This paper describes a rapid, simple and one-step method for the preparation of 2–4 nm diameter zirconia-coated gold nanoparticles at room temperature. These were synthesized by two simultaneous processes: chemical reduction tetrachloroauric acid with sodium borohydride formation zirconia sol–gel matrices. All nanoparticle sols characterized UV–visible absorption transmission electron microscopy to determine size shape. The synthesis is combination polymeric structure amorphous use strong...

An all-solid electrical double layer supercapacitor was prepared, starting from a porous silica matrix coated with gold thin-film. The metallization of the xerogel performed by an original wet chemical process, based on controlled growth nanoparticles two opposite faces monolith as seed layer, followed electroless deposition continuous thin film. thickness metallic film assessed to be 700 nm. plays major roles: (1) it is used for electrode, creating large specific surface area, and (2) acts...

The synthesis of a pyrene bisiminopyridine ligand L was successfully accomplished by condensation between 1-aminopyrene and 2,6-pyridinecarboxaldehyde. complexation with zinc triflate afforded neutral metal complex formulated as [Zn(H2O)LCF3SO3)2].2Et2O. In the complex, is coordinated to zinc(II) through its three nitrogen atoms which form distorted octahedral environment together oxygen atoms, two from anions one aqua ligand. Both compounds have been characterized using NMR, elemental...