Two Ag^I–Carboxylate Polymers Involving Ag–Ag Interactions: Syntheses, Structures and Fluorescent Properties

Abstract

Two novel silver complexes [Ag 2 (Hsal) 2 ] n (1) and [Ag 2 (oda)] n (2) (H 2 sal = salicylic acid, H 2 oda = oxydiacetatic acid) were synthesized hydrothermally by reaction of AgNO 3 with H 2 sal or H 2 oda and characterized by IR spectroscopy, elemental analysis, and single-crystal X-ray diffraction. Compound 1 shows a 2D metal-or-1635 ganic architecture connected by μ 3 -η 1 :η 1 :η 1 -salicylato ligands and Ag-Ag interactions. Compound 2 displays a 3D metal-organic network formed by μ 7 -(η 2 :η 1 )-(η 2 :η 1 )-η 1 -oxydiacetato ligands and Ag-Ag interactions. The photoluminescence properties of both complexes were also investigated. Scheme 1. Schematic representation of 1 (prepared by ChemOffice). Scheme 2. Schematic representation of 2 (prepared by ChemOffice).All reagents were analytical reagents and used as received without further purification.

Anion-Controlled Assembly of Silver(I)/Aminobenzonitrile Compounds: Syntheses, Crystal Structures, and Photoluminescence Properties

“…Despite some evolution, the ability to predict and control the supramolecular assembly is seriously restricted by the bewildering structure-directing factors such as inbeing of the metal ions, the predesigned organic linkers, solvent, pH value of the solution, the temperature, the counterion with different bulk or coordination ability, the template, and metal-to-ligand stoichiometry, and much more elaborate studies are required to comprehend the inter- and intramolecular forces that determine the fashions of molecular structure and molecule packing in the solid state. Including the above-mentioned factors, the noncovalent forces such as hydrogen-bonding, π···π stacking, metal···metal interactions based on d 10 metal cations, metal···π, C–H···π, and anion···π interactions also determine the supramolecular topology and dimensionality . On the other hand, although the abn (aminobenzonitrile) ligand has diverse coordination preferences such as monodentate (albeit ambidentately using either N amino or N cyano ), bridging, or bidentate fashion (using both N donors), coordination chemistry of it was still less reported because both N amino and N cyano atoms of abn ligand are weak coordinative sites due to the conjunction of electrons on p -orbital with phenyl ring, and the cyano group is volatile in both acidic and alkaline environments .…”