Novel silver(I) pyrazole-based coordination polymers: Synthetic and structural studies

Synthesis, Crystal Structure and Thermal Stability of 1D Linear Silver(I) Coordination Polymers with 1,1,2,2-Tetra(pyrazol-1-yl)ethane

“…Silver is one of the metal ions most commonly used for the construction of coordination polymers owing to its wide range of coordination numbers (2 to 7 [1]) and its ability to comply with ligand geometry [2][3][4][5]. Silver coordination polymers are receiving much attention because of their antimicrobial [6][7][8][9], anti-tumor [10] and luminescent properties [11].…”

[Ag2M(Te2O5)2]SO4 (M = CeIV or ThIV): A New Purely Inorganic d/f-Heterometallic Cationic Material

“…The structural chemistry of f-element complexes is diverse because of both high coordination numbers and a lack of geometric preference. It is typical for f-elements to have coordination numbers of 6–10; within each exist several different coordination modes. − For example, f-elements with a coordination number of 8 can have the geometries of a cube, dodecahedron, hexagonal bipyramid, bicapped trigonal prism, and square antiprism (as observed in this work). − Ag can have coordination numbers of 2–7 depending on the flexibility of the ligand . Tellurium, because of its SALP electrons and polarizability, can form polymeric structures, resulting in highly variable coordination environments.…”

“…36−38 Ag can have coordination numbers of 2−7 depending on the flexibility of the ligand. 30 Tellurium, because of its SALP electrons and polarizability, can form polymeric structures, resulting in highly variable coordination environments. This is due to tellurium's ability to bind three, four, or five O atoms and form a variety of building units such as 1D chains, 2D sheets, and 3D frameworks.…”

“…These variable coordination modes are a result of no crystal-field stabilization of the d 10 configuration. While no geometric preferences for Ag exist, a coordination number of 2 is typically observed because of restrictions imposed upon it by the ligand. − The linear Ag I centers reside in pores created by the tellurite scaffold (Figures c and ) and are coordinated by two symmetry-related O2 atoms at a distance of 2.209(4) and 2.217(7) Å for the Ce and Th structures, respectively. The bond angles are 180° (Table S2).…”

Conjugation of a Silver-Based Coordination Polymer with Curcumin: A New Case of an Inorganic Polymeric Co-crystal

“…Considering the coordination versatility of the N^N ligand bpy with respect to the Ag(I) ion in the presence of trifluoromethanesulfonate (OTf) as a counterion, the synthesis of Ag(I) CPs is a delicate procedure since, as already demonstrated by Klausmeyer et al, a modification of the stoichiometric ratio between the N^N ligand and the silver precursor could lead to the formation of a discrete compound rather than a polymer . Moreover, polymorphism is frequently encountered in Ag(I) coordination polymers − as a result of the structural flexibility of the polymeric chains. It is known that, in a given reaction, the addition sequence of the reagents can influence the formation of different polymorphs − probably as a consequence of different solubilization rates of the reagents.…”