Synthesis, structure and photophysical properties of two tetranuclear copper(I) iodide complexes based on acetylpyridine and diphosphine mixed ligands.

Two copper(I) iodide tetramers, namely, [μ-1,3-bis(diphenylphosphanyl)propane-κP:P']di-μ-iodido-di-μ-iodido-[1-(pyridin-3-yl)ethan-1-one-κN]tetracopper(I) dichloromethane disolvate, [CuI(CHNO)(CHP)]·2CHCl (CuL), and [μ-1,3-bis(diphenylphosphanyl)propane-κP:P']di-μ-iodido-di-μ-iodido-[1-(pyridin-4-yl)ethan-1-one-κN]tetracopper(I), [CuI(CHNO)(CHP)] (CuL), have been synthesized from reactions of CuI, 1,3-bis(diphenylphosphanyl)propane (dppp) and 3- or 4-acetylpyridine (3/4-acepy). The complexes were characterized by elemental analysis, IR spectroscopy, single-crystal X-ray diffraction (XRD), powder XRD and photoluminescence spectroscopy. Both complexes possess a stair-step [CuI] cluster structure with a crystallographic inversion centre located in the middle of a CuI ring (Z' = 1/2).

Solvent-assisted planar structure of a stilbene-based salicylhydrazone compound: crystal structure, solvent- and aggregation-induced emission, and switchable luminescence colouration.

A novel stilbene-based salicylhydrazone compound {systematic name: (E)-4,4'-(ethene-1,2-diyl)bis[(N'E)-N'-(2-hydroxybenzylidene)benzohydrazide] dimethyl sulfoxide disolvate, CHNO·2CHOS or L·2DMSO} was synthesized and characterized by single-crystal X-ray diffraction, powder X-ray diffraction and luminescence spectroscopy. The title compound crystallizes in the monoclinic space group P2/c, with half a symmetry-independent L molecule and one dimethyl sulfoxide (DMSO) solvent molecule in the asymmetric unit. The L molecule adopts an almost planar structure, with a small dihedral angle between the planes of the stilbene and salicylhydrazone groups.

Four isostructural lanthanide(III) coordination compounds based on a new N-oxydic pyridyl naphthalenediimide ligand: synthesis and characterization.

Naphthalenediimides, an attractive class of electron-deficient organic dyes with rich redox and photoredox properties, have been investigated extensively as building blocks for coordination networks or metal-organic frameworks in recent decades. However, most of the available work has focused on d-block metal cations rather than f-block lanthanide ions, whose complexes exhibit a large variability in coordination numbers. In this article, four coordination polymers composed of naphthalenediimides and lanthanide cations, namely catena-poly[[[tris(nitrato-κO,O')lanthanide]-bis{μ-N,N'-bis[(1-oxidopyridin-1-ium-3-yl)methyl]-1,8:4,5-naphthalenetetracarboxdiimide-κO:O'}-[tris(nitrato-κO,O')lanthanide]-μ-N,N'-bis[(1-oxidopyridin-1-ium-3-yl)methyl]-1,8:4,5-naphthalenetetracarboxdiimide-κO:O'] methanol disolvate], {[Ln(CHNO)(NO)]·CHOH}, with Ln = Eu, 1, Gd, 2, Dy, 3, and Er, 4, have been successfully synthesized under hydrothermal conditions.

A series of pure-blue-light emitting Cu(i) complexes with thermally activated delayed fluorescence: structural, photophysical, and computational studies.

Four mononuclear Cu(i)-halide complexes containing phosphines and pyridine ligands with strong electron donor substituents, [CuCl(PPh)(4-NMepy)] (1), [CuI(PPh)(4-NHpy)] (2), [CuI(POP)(4-NHpy)] (3), and [CuI(POP)(4-NMepy)]·0.5(EtO) (4), (PPh = triphenylphosphine, 4-NMepy = 4-(dimethylamino)pyridine, POP = bis[(2-diphenyl-phosphino)phenyl]ether, 4-NHpy = 4-aminopyridine, EtO = diethyl ether) were synthesized and studied with regard to their structural, photophysical properties and theoretical calculations. The complexes exhibit pure blue thermally activated delayed fluorescence (λ = 442 (1), 436 (2), 464 (3), and 448 nm (4)) in crystalline at room temperature.

A two-dimensional silver(I) coordination polymer constructed from 4-aminophenylarsonate and triphenylphosphane: poly[[(μ₃-4-aminophenylarsonato-κ³N:O:O)(triphenylphosphane-κP)silver(I)] monohydrate].

The title compound, {[Ag(C6H7AsNO3)(C18H15P)]·H2O}n, has been synthesized from the reaction of 4-aminophenylarsonic acid with silver nitrate, in aqueous ammonia, with the addition of triphenylphosphane (PPh3). The Ag(I) centre is four-coordinated by one amino N atom, one PPh3 P atom and two arsonate O atoms, forming a severely distorted [AgNPO2] tetrahedron. Two Ag(I)-centred tetrahedra are held together to produce a dinuclear [Ag2O2N2P2] unit by sharing an O-O edge.

A three-dimensional coordination polymer based on the Zn₄(μ₃-OH)₂ unit: poly[[(μ₄-benzene-1,4-dicarboxylato)bis(μ₃-benzene-1,4-dicarboxylato)bis(μ₃-hydroxido)bis(1,10-phenanthroline-5,6-dione)tetrazinc] dihydrate].

The title compound, {[Zn4(C8H4O4)3(OH)2(C12H6N2O2)2]·2H2O}n, has been prepared hydrothermally by the reaction of Zn(NO3)2·6H2O with benzene-1,4-dicarboxylic acid (H2bdc) and 1,10-phenanthroline-5,6-dione (pdon) in H2O. In the crystal structure, a tetranuclear Zn4(OH)2 fragment is located on a crystallographic inversion centre which relates two subunits, each containing a [ZnN2O4] octahedron and a [ZnO4] tetrahedron bridged by a μ3-OH group. The pdon ligand chelates to zinc through its two N atoms to form part of the [ZnN2O4] octahedron.

Enantioselective synthesis of a chiral coordination polymer with circularly polarized visible laser.

Circular dichroism is known to be the feature of a chiral agent which has inspired scientist to study the interesting phenomena of circularly polarized light (CPL) modulated molecular chirality. Although several organic molecules or assemblies have been found to be CPL-responsive, the influence of CPL on the assembly of chiral coordination compounds remains unknown. Herein, a chiral coordination polymer, which is constructed from achiral agents, was used to study the CPL-induced enantioselective synthesis.

An unusual double T5(2) water tape trapped in silver(I) coordination polymer hosts: influence of the solvent on the assembly of Ag(I)-4,4'-bipyridine chains with trans-cyclohexanedicarboxylate and their luminescent properties.

In this paper, four silver(I) compounds, namely, {[Ag(4)(bipy)(4)(chda)]·2NO(3)·10H(2)O}(n) (1), {[Ag(2)(bipy)(2)(chda)]·14H(2)O}(n) (2), {[Ag(2)(bipy)(2)(chda)]·3EG·2H(2)O}(n) (3) and {[Ag(2)(bipy)(2)(chda)]·H(2)chda}(n) (4) (where bipy = 4,4'-bipyridine, H(2)chda = trans-cyclohexane-dicarboxylate and EG = ethylene glycol), have been synthesized and characterized by single-crystal X-ray diffraction analyses. In all of these compounds, the Ag(I) centers are linked by bipy ligands to form 1D Ag(I)-bipy chain structures. The chda(2-) anions of compound 1 adopt a μ(4)-coordination mode to connect the Ag(I)-bipy chains, forming a H-beam-like chain.

Mu2-acetato-kappa(2)O:O'-tris(mu2-ferrocenecarboxylato-kappa(2)O:O')bis[(N,N-dimethylformamide-kappaO)copper(II)].

The title compound, [Cu(2)Fe(3)(C(5)H(5))(3)(C(2)H(3)O(2))(C(6)H(4)O(2))(3)(C(3)H(7)NO)(2)], belongs to the classic dimeric paddle-wheel structure type. It is an unusual example in that it contains two different carboxylate groups, viz. ferrocenecarboxylate and acetate.

mer-Bis(1,4-dibenzoylthiosemicarbazidato-kappa3O,N,O')cobalt(II).

The title complex, [Co(C(15)H(12)N(3)O(2)S)(2)], consists of an octahedrally coordinated Co(II) ion, with two crystallographically independent 1,4-dibenzoylthiosemicarbazidate ligands in a tridentate mer coordination [Co-O = 2.064 (3)-2.132 (3) A and Co-N = 2.

Two pseudo-polymorphic copper-benzene-1,2,4,5-tetracarboxylate complexes.

Two pseudo-polymorphic polymers, poly[ethylenediammonium [[aquacopper(II)]-micro(4)-benzene-1,2,4,5-tetracarboxylato] dihydrate], [(C(2)H(10)N(2))[Cu(C(10)H(2)O(8))(H(2)O)].2H(2)O](n), (I), and poly[ethylenediammonium [copper(II)-micro(4)-benzene-1,2,4,5-tetracarboxylato] 2.5-hydrate], [(C(2)H(10)N(2))[Cu(C(10)H(2)O(8))].

{[Cu(mtz)]3(CuI)}n: an unprecedented non-interpenetrated (12(3))(12(2).14)(3) network with triple-stranded helices.

A complex with triple-stranded helices, {[Cu(mtz)]3(CuI)}n, was obtained under hydrothermal conditions. The complex possesses an unprecedented non-interpenetrated (12(3))(12(2).14)3 network, which represents the first example of the largest gon value of the smallest ring for the Archimedean net reported so far.